Firenock Frequently Asked Questions

    Firenock has 2 models; hunting and target.  For hunting, an arrow fitted with a Firenock "G" will turn on when it is shot out of a bow/crossbow that asserted 65G.  The internal fuzzy logic system of Firenock will be activated, thus turing on the LED, the time delay sub-system, and the motion-sensing subsystem.  After the motion-sensing system has been left undisturbed for 4-8 seconds, one can turn off the lighted nock manually by dropping the nock end of the arrow on a hard surface.  For target, the system will be activated just like hunting one, but the light will be turned off by itself automatically after 17 seconds.

ADVANTAGES of the “G” Series:
    1) The Firenock is designed to prevent accidental lighting and accidental deactivation
    2) DOES NOT need any actuator
    3) IS NOT affected by magnetic force
    4) Temperature tolerance range of -15°F(~-26°C) to 180°F (~82°C)
    5) Simple to use
DISADVANTAGES
    1) Costs more than the previous Firenock products
    2) Weighs approximately 2 grains more than the previous Firenock products
    3) Arrows must acceleration no less than 65G to activate

    To resolve confusion on the product codes Firenock uses, as all Firenock that are sold through Firenock LLC are base on G-force.  It is no reason to use the "G" in any product code.  To make the product code really stand for what it means, the GS, GA, GE, GC, and GF as of 2010 are called S3, A3, E3, C3 and F3 to reflect what they really are, Firenock of a specific style in 3 pack.

  Firenock Style codes:
    "A" = Fits most narrow arrow shafts with an internal diameter of 0.202" - 0.204", e.g. Easton Axis
    "C" = Crossbow bolts with an internal diameter of 0.297" - 0.303", e.g. 2219, e.g. GT Laser
    "E" = Fits most medium arrow shafts with an internal diameter of 0.229" - 0.231", e.g. Easton Epic, ACC 3-49
    "F" = Flat crossbow bolts with an internal diameter of 0.297" - 0.303", e.g. 2219, GT Laser
    "S" = Fits most standard arrow shafts with an internal diameter of 0.242" - 0.246", e.g. Gold Tip, CX Maxima
    "V" = Fits most 22 target arrow shafts with an internal diameter of 0.299" - 0.301", e.g. Gold Tip 22
    "Y" = Fits narrower crossbow bolts with an internal diameter of 0.270" - 0.282", e.g. Carbon Express, Parker, Vapor
  Firenock Packaging codes:
    "1" = Hunting (1-pack)
    "3" = Standard Hunting (3-pack)
    "B" = Battery or Hydro™ bow fishing adaptor
    "O" = O-ring pack
    "P" = Practice weight pack
    "T" = Target pack (1-pack)
    "U" = Ultimate pack or model (6-pack)
    "X" = Extreme shock battery end cap
    "Z" = Multi Color pack (6-pack)
  1st Character for Circuit Codes:
    "H" = Hunting Circuit for "C, F, S, V, or Y" style nocks
    "T" = Target Circuit for "C, F, S, V, or Y" style nocks
    "N" = Hunting Circuit for "A or E" style nocks
    "K" = Target Circuit for "A or E" style nocks
  2nd Character for Circuit and Nock Codes:
    "B" = Blue
    "C" = Clear (white)
    "G" = Green
    "O" = Orange
    "P" = Pink
    "R" = Red
    "S" = Smoke (black)
    "W" = Wood (oak)
    "Y" = Yellow

    Firenock "G" uses an acceleration switch to activate the LED.  In physics, the unit of accelerations "g": as in "g-force", which you have heard used in reference to fighter jets and rocket travel.

    a. Wait 4-8 seconds after activation before trying to deactivate the system.
    b. Lift the arrow (nock-end down) no less than 8 inches (20 cm) above a semi-hard flat surface.
    c. Drop the arrow (nock-end down) and allow the nock to hit the surface via gravitational force.
    d. Upon impact, the Firenock will deactivate automatically.
    e. If the nock does not deactivate, repeat Steps (b-c) and raise the distance in 2-inch (5 cm) increments until the unit deactivates.
Note: A pine block, the top of your boots or the inside floor of your truck are examples of semi-hard surfaces.  If the Firenock does not shut off after a free-fall distance is as high as 12" (30 cm), please return your Firenock in for warranty replacement if it is within the warranty period

    Do not use your finger nail to force the cross lock wire onto the neck of the battery.  Injuries have occurred while doing this.  There is a much simpler way to install and remove the battery.  After inserting the battery into the pin connector and with the cross loop just over the neck, the battery should be rotated counterclockwise.  This rotation will guide the cross lock wire onto the neck of the battery and complete the installation.  Then, flip the "C" lock over the battery and the battery is installed.  Note: the "C" lock should go around the battery slightly IN FRONT of the O-ring grove located near the end of the battery.  To remove the battery, flip the "C" lock wire open and then rotate the battery clockwise.  The cross lock wire will open wide and the battery can be easily removed.
    The following Video would also how you how it is done.

    The best way to tell if the 3V lithium battery is still good is to use a battery tester.  A volt meter only shows if the battery voltage output, which have no correlation to if the battery have power.  In case of the Firenock batteries, even when they are 90% drained, they may still show 3.0v.  After testing and using many battery testers, GB Instruments™ GBT-500A Battery Tester which is available at most on-line retail store (e.g. www.amazon.com) and most hardware store (e.g. ACE Hardware, Menards) for about $10.00 seems to work the best for its price and size.
    To test Firenock battery with it, set the dial at LITHIUM 3V, use the red probe (positive) to the shell of the battery and the black probe (negative) to the pin of the battery.  Picture of it below.

   There have been many attempts to make a dependable and long lasting lighted target nock. The Firenock target nock uses the same acceleration switch as does the Firenock "G" hunting series, but the target nock will automatically deactivate itself after 15 to 17 seconds instead of continuously lighted on. Unlike many other attempts, such as capacity circuit designs, Firenock target nocks are based on an IC (integrated circuit) design that uses a digital time counter. Capacity circuit designs are not reliable and they are not dependable under higher temperatures. Due to voltage tends to drop in batteries in cold weather, whereas pure digital designs will not function well in a low temperature environment. Firenock integrated circuit design eliminates both of these problems.
    Firenock Target Nocks come in a single pack as "ST", "AT", "ET" and each pack includes 1 target circuit, 1 clear nock, 2 green nocks, 2 matched weights, 1 battery and 1 O-ring. The target nock system is also available in the Ultimate pack in "SU", "AU", "EU". Each Ultimate pack contains 3 target circuits, 3 hunting circuits, 6 matched weights, 18 nocks, 6 O-rings and 6 batteries.

   Firenock Target Lighted Nocks use pure digital circuits.  This design is significantly different from a Firenock Hunting Nock, which has a very wide temperature-range tolerance; both low and high.  Since the Target Nocks are pure digital, the temperature range in which they will function is a bit more limited.  However, from our tests we concluded that Target Nocks will work dependably between 32°F and 140°F; which should be fine for most target purposes.  In situations where the temperature is lower than 32°F, the duration that the light will operate on a Target Nock may not be predictable because in a pure digital circuit a drop in power/voltage may cause the computer timer to count incorrectly.

    Firenock GS is designed from the ground up to be as water resistance as possible.  A standard Firenock utilizes 24K gold plated connectors, and a UV cure epoxy costing. This makes Firenock a lot more suitable for bow-fishing applications. In case of brackish and salt water bow fishing, a whole new level of water-proofing is needed for Firenock to perform reliably in those situations; water resistance alone is not going to make it.  That is why Firenock LLC makes a whole series of bow-fishing accessories - Hydro™.
    Firenock makes 3 bow-fishing adaptors to suit what most Bow-fisherman's need.

1. BF - Standard 5/16" Fiberglass arrow adaptor, this adaptor is specially designed to work with Firenock G Series, "S" style on 5/16" solid fiberglass bow-fishing arrows.
2. BI - Carbon Arrow Internal adaptor, this adaptor is specially designed to work with Firenock G Series, "S" style on Carbon bow-fishing arrows with an internal diameter of ~0.244" - 0.246 and 1.0" inch of space.  It also has a pre-tapped hole to accept the slide stop.
3. BC - Carbon Arrow Collar adaptor, this adaptor can be used as a single piece or 2 piece design.  It also allows one to use the extended battery for Firenock.  It is the pinnacle of all Firenock Hydro series of bow-fishing adaptor.  The only down side is that not all carbon arrows are made to work with this adaptor.

    Firenock S will fit most standard carbon arrow shafts with an internal diameter ID of 0.242" - 0.246".
    Firenock C will fit most standard and carbon crossbow bolt shafts with an internal diameter ID of 0.297" - 0.303".
    Firenock A will fit most slim carbon arrow shafts with an internal diameter ID of 0.202" - 0.204".
    Firenock E will fit most medium size carbon arrow shafts with an internal diameter ID of 0.229" - 0.233". (as small as 0.20-5")
    Firenock F will fit most standard and carbon crossbow bolt shafts with an internal diameter ID of 0.297" - 0.303".
    Firenock V will fit most 22 size carbon arrow shafts with an internal diameter ID of 0.297" - 0.303".
    Firenock Y will fit most slim carbon crossbow bolt shafts with an internal diameter ID of 0.284" - 0.286" (as small as 0.270").

    As of 2009, the following 6 states (Colorado, Idaho, North Dakota, Montana, Oregon, and Washington) have laws that state it is illegal to use any electronics on the archery hunting equipment during archery season to harvest game.  These laws make any battery powered lighted nock illegal to be used to harvest game during archery season with archery equipment.  In states with general hunting seasons, it is however legal to use a lighted nock during the general hunting season with archery gear.  Please check the latest updated regulation(s) for each state one wants to archery hunt to make sure one complies with the specific law(s) of the state on how an animal can be legally harvested with your archery equipment at all times.

    In order to make the best and most versatile lighted nock, Firenock took the only route that would allow us to achieve these two goals. We designed and made our own unique nocks! This process is expensive and complicated, but it was the only way to manufacture the finest lighted nock on the market.  Each Firenock mold is designed with an extremely tight tolerance (0.001 mm).  Firenock uses only the best poly carbonate.  Based on poly carbonates published specifications, we know that it has a superior ability to solve problems like memory and shear force.  We are also able to control the optical characteristics of each nock.  Poly carbonate also allows for better light transmission so you can see them better.
    To satisfy the demands of the most discriminating target shooter or hunter and for quality control, all production molds of Firenock "G" series nocks have mold numbers on the inside.  This control measure allows us to provide matched nocks that will be within 0.000001 mm and 0.01 grain of variance.
    On our test bench, when shot without the circuit boards installed, we consistently achieve 1 to 2 ft/sec higher speed than most other manufacturers" nocks.  When you use Firenock you not only get the most reliable, the lightest and the brightest lighted nock on the market, but you also get one of the fastest shooting nocks.

    Standard Firenock™ / Lightning Nock™ use a red LED, but since Firenock poly carbonate nock is field-changeable, you can also use nocks of different colors to get different color combination.
  There are 9 colors of nock and 6 colored LEDs (color chart) or 54 colors of light for Firenock "S" style.
  There are 4 colors of nock and 6 colored LEDs or 18 colors of light for Firenock "A" style.
  There are 3 colors of nock and 6 colored LEDs or 18 colors of light for Firenock "E" style.
  There are 2 colors of nock and 6 colored LEDs or 12 colors of light for Firenock "C" style.
  There are 2 colors of nock and 6 colored LEDs or 12 colors of light for Firenock "F" style.
  There are 2 (may go as high as 9 base on demand) colors of nock and 6 colored LEDs or 12 colors of light for Firenock "V" style.
  There are 2 colors of nock and 6 colored LEDs or 12 colors of light for Firenock "Y" style.

    There are a total of 4 different circuits that Firenock uses.
    • The "H" series is a hunting function that will fit into C, F, S, V, and Y style nocks
    • The "T" series is a target function that will fit into C, F, S, V, and Y style nocks
    • The "N" series is a hunting function that will fit into A, and E style nocks
    • The "K" series is a target function that will fit into A, and E style nocks

    There are 4 different circuit groups; in 2 different sizes.  The hunting function circuit will stay lit until someone deactivates it or the battery runs out.  The target function will automatically shut itself off after 15-17 seconds.  The visual difference between the hunting circuits and the target circuits is that the target function circuits have a small black dot which is used to protect the digital timer.  To tell what style of nock the circuit will fit; the position of the clip and lock tabs will indicate if the circuit is designed for either the C/F/S/V/Y or the A/E nocks.  The circuits that will fit the A/E style (N/K series) have the tab next to the LED while the C/F/S/V/Y style (H/T series) has the tab next to the mini-G switch.  Below are the pictures (front and back) of all 4 series of Firenock circuits.

    Firenock offer offer up to 54 colors of lighted nock for nearly every single lighting condition one would want for a lighted nock.  One have to understand that it is a color of light, not just a color. (i.e. when one mix 3 primary color of light, it will end up to be white while mixing 3 primary color of pigment one will end up with black.) Therefore it is not the contrast one should be looking for but enhancement; what shows up best.  In most cases, red nock on a red LED is best.  If there are more universal color, Firenock standard would not be red on red, and all tail lights of most vehicle would be that color too.
    There are cases that other colors besides red on red would be better.  People with color blindness and special lighting conditions are what one need to consider to achieve the lighting effect one wanted to observe.  Green on green is a very good combination for spring turkey as back ground is green.  We are also advised that for red and green color blind person, yellow on yellows seems best.  Blue on blue looks wonderful under indoor fluorescent lighting.

    As of Fall 2009, there are a total 10 distinct O-ring sizes use in Firenock line up:

  Firenock "S" style: it is sold with Firenock "S" style nock and "OS" pack, this size O-ring is also used in XE (Extreme Shock Battery End Cap for "E" style)

  Firenock "A" style: it is sold with Firenock "A" style nock and "OA" pack

  Firenock "E" style: it is sold with Firenock "E" style nock and "OE" pack, this size O-ring is also used in XS (Extreme Shock Battery End Cap for "S" style)

  Firenock "C" and "F" style: they are sold with Firenock "C" and "F" style nock and "OC" pack

     " OC" pack "A" use on nock groove for AL 2119, this size O-ring is also on Nock groove for carbon, on Firenock Hydro™ bow fishing adaptor

      "OC" pack "B" use on nock groove for carbon, this size O-ring is also use on extreme shock end caps for C/F/V style

      "OC" pack "C" use on battery groove for 2119, and on OV pack (22 size; V size Firenock)

      "OC" pack "D" use on battery groove for carbon

  Firenock "Y" style: they are sold with Firenock "Y" style nock and "OY" pack

    Firenock "XA" size: It is sold with Firenock "XA" (Extreme Shock Battery End Cap for "A" style)

    Firenock "XY" size: It is sold with Firenock "XY" (Extreme Shock Battery End Cap for "Y" style)

    Firenock GSH ~ 27 grains with nock and battery installed
    Firenock A ~23 grains with nock and battery installed
    Firenock E ~24 grains with nock and battery installed
    Firenock C ~29 grains with nock and battery installed
    Firenock F ~29 grains with nock and battery installed
    Firenock S ~27 grains with nock and battery installed
    Firenock V ~29 grains with nock and battery installed
    Firenock Y ~31 grains with nock and battery installed
    Lightning Nock S ~28 grains with nock and battery installed

    As stated in Pope and Young equipment definitions, Rule I,C.1.(c) Electronic or battery-powered devices shall not be attached to a hunting bow.  Therefore if you use a lighted nock, you need to ask yourself like the State of Colorado did, "Does the arrow can be consider a part that is attached to the bow?"  If the answer is yes, then it the answer to this question is yes.  FYI, the last official ruling from P&Y was also a yes to this question.  Therefore if you wanted to enter your harvest game in P&Y record book and you are using Firenock, make sure you use the practice nock (matched weight nock) for the shot, or your down game is not P&Y eligible.  B&C record book however have no such rules against the using of a lighted nock on harvest game.

    By adding Firenock to one's arrow, there should be no noticeable effect to the arrow for most archers.  In occasion, when the set up is already at the limit of what can be done with that particular setup, by adding an extra 10 to 15 grains, all is right is no longer true.  Under this condition, the following nock tuning procedure should bring your bow back to where you were, if not significantly improve on what you used to have.
    When one convert from the regular nock to the Firenock (either lighted nock or practice nock), one may run into a few minor tuning situations; which are listed below.  One's specific results could vary depending on the setup, release method and type of arrow rest.  All information provided below is based on a right-handed shooter, using a mechanical release and a drop-away arrow rest.

1. Porpoising: Since we are adding weight (approximately 15 additional grains) to the back end of the shaft, the nock will tend to drop as it leaves the bow string.  If you are using a shoot through type of arrow rest (Whisker Biscuit, Hostage Pro or NAP 360) this may not be noticeable.  If you are using the standard drop-away arrow rest, you may get either a tail up or tail down tear when paper tuning your bow since the arrow will be hitting the bow shelf or rest as it passes by.  This will also be noticeable when shooting at a 30 yard target; the nock will porpoise all the way to the target.  A few solutions include
   • Adjusting the timing of your rest: As long as you have enough clearance, try to adjust the timing of your drop-away to have it start dropping towards the back third of your arrow. Arrow rests that connect to the cable guard slide or limb (Vapor Trail Limb Driver) work well to correct this situation.
   • Move D-loop: Another possible solution would be to move your d-loop or nocking point up the string.  Try moving in increments of 1/32 of an inch until the situation is corrected.
2. Stiff Shaft: Anytime we add weight to the back end of the arrow, the arrow tends to react as if it is stiffer than normal. This will be noticeable when shooting at a 30 yard target, the arrow will tend to hit to the left when compared to arrows without weight in the back end of the shaft. This is more apparent when shooting broad heads. The arrow may also fishtail all the way to the target. When paper tuning, you may get a tail right tear.  A few solutions include:
   • Move arrow rest: The first step should be to move the arrow rest out slightly to try and correct the stiff shaft effect.  If that does not work, try the following additional solutions
   • Adding weight to the point: If you are using 100 grain tips, try 125 grain tips.
   • Longer arrow: Try the same arrow only 1/2 to 1 inch longer.  The additional length will make the arrow more flexible, or less stiff.
3. Combination: It is possible you have a combination of the above effects.  This would be noticeable by witnessing the nock going in a cork-screw fashion when shooting at the 30 yard target.  Also, you may get a diagonal tear when paper tuning.  Follow the above steps concentrating on the porpoising effect first.  Then move to the left and right effect.

    All Firenock styles beside the crossbow systems are designed to use with a string loop.   If you uses the under the nock type anchor/release, and any bow with ATA shorter than 35", the chance that the nock falling off the string is very high.  This is due to that Firenock's nock throat is very short and very precise to give you the most precision release available.  If you use under the nock type anchoring point, when the bow is at full draw, due to the angle of the string, the nock can be forced out of the string from its nock point.  You may not notice it when you are practicing on the ground as the bow is level.  This sure will be a big problem when your bow point is pointed down and the arrow will fall off.  We do not see a solution to this problem except change your string set up.

    In some cases when you shot Firenock with an older bow with a worn-in string, the string with its deformed shaped base on the old nock will torque the Firenock when in full pull and release.  A new string is all it takes to solve this issue.

    If the serving on the string is old and it is worn-in, the shape of the serving is no longer round.  This would form an uneven pressure to the nock and thus cause it to crack the nock as it is being torqued when shot.  If the serving is not even, this will also cause this to happen.  A new serving on the string or a new string will solve this problem in most cases.

    If the serving on the string is larger than the usual 0.12" (3.05mm), the nock will grab on the string tighter than normal.  In case of a light weight arrow and a light weight tip, this can be even more visible.  A thinner serving or a new string with a thinner serving will take care of this issue.

LIGHTED NOCK PACK
  Firenock [SU] : $90.00 (standard-size arrow, ultimate pack)
  3 Hunting Circuits (red), 3 Target Circuits (red), 6 matched weights, 6 O-rings, 6 green nocks, 3 red nocks, 3 blue nocks, 3 orange nocks and 3 clear nocks
  Firenock [SZ] : $90.00 (standard-size arrow, color target pack)
  6 Target Circuits (blue, clear, green, orange, red, yellow; 1 ea), 6 matched weights, 6 O-rings, 18 nocks (blue, clear, green, pink, orange, red, smoke, wood, yellow; 2 each)
  Firenock [AU] : $90.00 (slim-size arrow, ultimate pack)
  3 Hunting Circuits (red), 3 Target Circuits (red), 6 matched weights, 6 O-rings, 6 green nocks, 6 red nocks, and 6 clear nocks
  Firenock [EU] : $90.00 (medium-size arrow, ultimate pack)
  3 Hunting Circuits (red), 3 Target Circuits (red), 6 matched weights, 6 O-rings, 6 green nocks, 6 red nocks, and 6 clear nocks
  Firenock [S3] : $45.00 (standard-size arrow, hunting model)
  3 Hunting Circuits (red or green), 3 matched weights, 3 O-rings, 3 green nocks, 3 red nocks, and 1 Nock Tool
  Firenock [A3] : $45.00 (slim-size arrow, hunting model)
  3 Hunting Circuits (red or green), 3 matched weights, 3 O-rings, 3 green nocks, 3 red nocks, and 1 Nock Tool
  Firenock [E3] : $45.00 (medium-size arrow, hunting model)
  3 Hunting Circuits (red or green), 3 matched weights, 3 O-rings, 3 green nocks, 3 red nocks, and 1 Nock Tool
  Firenock [C3] : $45.00 (crossbow bolt, hunting model)
  3 Hunting Circuits (red or green), 3 matched weights, 30 O-rings, 3 green nocks, and 3 red nocks
  Firenock [F3] : $45.00 (crossbow bolt, hunting model)
  3 Hunting Circuits (red or green), 3 matched weights, 30 O-rings, 3 green nocks, and 3 red nocks
  Firenock [V3] : $45.00 (22/64 size carbon, hunting model)
  3 Hunting Circuits (red or green), 3 matched weights, 3 O-rings, 3 green nocks, and 3 red nocks
  Firenock [Y3] : $45.00 (slim crossbow bolt, hunting model)
  3 Hunting Circuits (red or green), 3 matched weights, 3 O-rings, 3 green nocks, and 3 red nocks
  Firenock [S1] : $20.95 (standard size arrow, hunting model)
  1 Hunting Circuit (red or green), 2 matched weights, 1 O-ring, 1 425 Pin Battery, 2 green nocks, and 1 red nock
  Firenock [A1] : $20.95 (standard size arrow, hunting model)
  1 Hunting Circuit (red), 2 matched weights, 1 O-ring, 1 425 Pin Battery, 2 green nocks, and 1 red nock
  Firenock [E1] : $20.95 (standard size arrow, hunting model)
  1 Hunting Circuit (red or green), 2 matched weights, 1 O-ring, 1 425 Pin Battery, 2 green nocks, and 1 red nock
  Firenock [C1] : $20.95 (crossbow bolt, hunting model)
  1 Hunting Circuit (red), 2 matched weights, 14 O-rings, 1 425 Pin Battery, 2 green nocks, and 1 red nock
  Firenock [F1] : $20.95 (flat crossbow bolt, hunting model)
  1 Hunting Circuit (red), 2 matched weights, 14 O-rings, 1 425 Pin Battery, 2 green nocks, and 1 red nock
  Firenock [ST] : $20.95 (standard-size arrow, target model)
  1 Target Circuit (red), 2 matched weights, 1 O-ring, 1 425 Pin Battery, 2 green nocks, and 1 clear nock
  Firenock [AT] : $20.95 (slim-size arrow, target model)
  1 Target Circuit (red), 2 matched weights, 1 O-ring, 1 425 Pin Battery, 2 green nocks, and 1 clear nock
  Firenock [ET] : $20.95 (medium-size arrow, target model)
  1 Target Circuit (red), 2 matched weights, 1 O-ring, 1 425 Pin Battery, 2 green nocks, and 1 clear nock
  Lightning Nock™ [LG] : $12.95 (standard-size arrow, hunting model)
  1 Hunting Circuit (red), 1 rubber band, 1 425 Pin Battery, and 1 orange nock
ACCESSORIES
  Firenock [BR] ): $10.95 (for any Firenock): 3 425 size pin batteries Mw 3 Battery Pin O-ring (regular)
  Firenock [BL] ): $10.95 (for any Firenock): 3 425 size pin batteries Mw 3 Battery Pin O-ring (light)
  Firenock [PS] ): $9.95 (for standard size lighted nock) for): 3 Green nocks with matched weights
  Firenock [PA] ): $9.95 (for slim size lighted nock): 3 Green nocks with matched weights
  Firenock [PC] ): $9.95 (for hybrid cross bolt size lighted nock): 3 Green nocks with matched weights (need OC to be able to be installed in a bolt)
  Firenock [PE] ): $9.95 (for medium size lighted nock): 3 Green nocks with matched weights
  Firenock [PF] ): $9.95 (for flat cross bolt size lighted nock): 3 Green nocks with matched weights
  Firenock [PV] ): $9.95 (for 22-series arrow): 3 Green nocks with matched weights
  Firenock [PY] ): $9.95 (for Carbon Express Crossbow Bolts): 3 Green nocks with matched weights
  Firenock [BF] ): $9.95 (Hydro™ 5/16" Fiberglass arrow Bow-fishing adaptor for Firenock "S"): 1 precision-machined adaptor in red, 1 O-ring
  Firenock [BI] ): $9.95 (Hydro™ Carbon arrow Internal Bow-fishing adaptor for Firenock "S"): 1 precision-machined adaptor in red, 1 O-ring
  Firenock [XS] ): $9.95 (Extreme Shock battery End Cap for "S"): 3 precision-machined adaptors, 3 O-rings, 1 tool
  Firenock [XA] ): $9.95 (Extreme Shock battery End Cap for "A"): 3 precision-machined adaptors, 3 O-rings, 1 tool
  Firenock [XC] ): $9.95 (Extreme Shock battery End Cap for "C"): 3 precision-machined adaptors, 3 O-rings, 1 tool
  Firenock [XE] ): $9.95 (Extreme Shock battery End Cap for "E"): 3 precision-machined adaptors, 3 O-rings, 1 tool
  Firenock [XF] ): $9.95 (Extreme Shock battery End Cap for "F/V"): 3 precision-machined adaptors, 3 O-rings, 1 tool
  Firenock [XY] ): $9.95 (Extreme Shock battery End Cap for "Y"): 3 precision-machined adaptors, 3 O-rings, 1 tool
  Firenock [HB] ): $34.95 (for Firenock "C/F/S/V/Y"): 3 Blue LED Hunting Circuits
  Firenock [HC] ): $34.95 (for Firenock "C/F/S/V/Y"): 3 Clear LED Hunting Circuits
  Firenock [HG] ): $34.95 (for Firenock "C/F/S/V/Y"): 3 Green LED Hunting Circuits
  Firenock [HO] ): $34.95 (for Firenock "C/F/S/V/Y"): 3 Orange LED Hunting Circuits
  Firenock [HR] ): $34.95 (for Firenock "C/F/S/V/Y"): 3 Red LED Hunting Circuits
  Firenock [HY] ): $34.95 (for Firenock "C/F/S/V/Y"): 3 Yellow LED Hunting Circuits
  Firenock [NB] ): $34.95 (for Firenock "A/E"): 3 Blue LED Hunting Circuits
  Firenock [NC] ): $34.95 (for Firenock "A/E"): 3 Clear LED Hunting Circuits
  Firenock [NG] ): $34.95 (for Firenock "A/E"): 3 Green LED Hunting Circuits
  Firenock [NO] ): $34.95 (for Firenock "A/E"): 3 Orange LED Hunting Circuits
  Firenock [NR] ): $34.95 (for Firenock "A/E"): 3 Red LED Hunting Circuits
  Firenock [NY] ): $34.95 (for Firenock "A/E"): 3 Yellow LED Hunting Circuits
  Firenock [TB] ): $34.95 (for Firenock "C/F/S/V/Y"): 3 Blue LED Target Circuits
  Firenock [TC] ): $34.95 (for Firenock "C/F/S/V/Y"): 3 Clear LED Target Circuits
  Firenock [TG] ): $34.95 (for Firenock "C/F/S/V/Y"): 3 Green LED Target Circuits
  Firenock [TO] ): $34.95 (for Firenock "C/F/S/V/Y"): 3 Orange LED Target Circuits
  Firenock [TR] ): $34.95 (for Firenock "C/F/S/V/Y"): 3 Red LED Target Circuits
  Firenock [TY] ): $34.95 (for Firenock "C/F/S/V/Y"): 3 Yellow LED Target Circuits
  Firenock [KB] ): $34.95 (for Firenock "A/E"): 3 Blue LED Target Circuits
  Firenock [KC] ): $34.95 (for Firenock "A/E"): 3 Clear LED Target Circuits
  Firenock [KG] ): $34.95 (for Firenock "A/E"): 3 Green LED Target Circuits
  Firenock [KO] ): $34.95 (for Firenock "A/E"): 3 Orange LED Target Circuits
  Firenock [KR] ): $34.95 (for Firenock "A/E"): 3 Red LED Target Circuits
  Firenock [KY] ): $34.95 (for Firenock "A/E"): 3 Yellow LED Target Circuits
  Firenock [AB] ): $9.95 (for Firenock "A"): 7 Blue nocks
  Firenock [AC] ): $9.95 (for Firenock "A"): 7 Clear nocks
  Firenock [AG] ): $9.95 (for Firenock "A"): 7 Green nocks
  Firenock [AR] ): $9.95 (for Firenock "A"): 7 Red nocks
  Firenock [CG] ): $9.95 (for Firenock "C"): 7 Green nocks
  Firenock [CR] ): $9.95 (for Firenock "C"): 7 Red nocks
  Firenock [EC] ): $9.95 (for Firenock "E"): 7 Clear nocks
  Firenock [EG] ): $9.95 (for Firenock "E"): 7 Green nocks
  Firenock [ER] ): $9.95 (for Firenock "E"): 7 Red nocks
  Firenock [FG] ): $9.95 (for Firenock "F"): 7 Green nocks
  Firenock [FR] ): $9.95 (for Firenock "F"): 7 Red nocks
  Firenock [SB] ): $9.95 (for Firenock "S"): 7 Blue nocks
  Firenock [SC] ): $9.95 (for Firenock "S"): 7 Clear nocks
  Firenock [SG] ): $9.95 (for Firenock "S"): 7 Green nocks
  Firenock [SO] ): $9.95 (for Firenock "S"): 7 Orange nocks
  Firenock [SP] ): $9.95 (for Firenock "S"): 7 Pink nocks
  Firenock [SR] ): $9.95 (for Firenock "S"): 7 Red nocks
  Firenock [SS] ): $9.95 (for Firenock "S"): 7 Smoke(black) nocks
  Firenock [SW] ): $9.95 (for Firenock "S"): 7 Wood(oak) nocks
  Firenock [SY] ): $9.95 (for Firenock "S"): 7 Yellow nocks
  Firenock [VG] ): $9.95 (for Firenock "V"): 7 Green nocks
  Firenock [VR] ): $9.95 (for Firenock "V"): 7 Red nocks
  Firenock [YG] ): $9.95 (for Firenock "Y"): 7 Green nocks
  Firenock [YR] ): $9.95 (for Firenock "Y"): 7 Red nocks
  Firenock [OA] ): $2.00 (for Firenock "A"): 7 O-rings
  Firenock [OB] ): $2.00 (for Firenock Battery): 7 O-rings
  Firenock [OC] ): $5.00 (for Firenock "C/F"): 30 O-rings in 4 sizes
  Firenock [OE] ): $2.00 (for Firenock "E"): 7 O-rings
  Firenock [OS] ): $2.00 (for Firenock "S"): 7 O-rings
  Firenock [OV] ): $2.00 (for Firenock "V"): 7 O-rings
  Firenock [OY] ): $2.00 (for Firenock "Y"): 7 O-rings

    Firenock "A" style nock will fit slim shafts with internal diameter of 0.202" to 0.204".  The ID of the Axis arrow is 0.202", which in most cases, do not need to use any O-ring to take up the slack between the battery, battery wire and the ID of the arrow shaft.  For standard battery [BR] which have a deeper grove, Firenock pack comes with O-ring(s) to fill the void if any do exist.  When using [BL] our light battery which have a much shallower grove, no O-ring is needed for the Firenock installation on the battery.

    No Firenock can work properly when a Uni-Bushing is installed.  All Firenock systems require multiple contact points on the inside wall of the arrow shaft.  The Uni-Bushing system makes the multiple contact points impossible to achieve.  If an arrow has a Uni-Bushing installed, the Uni-Bushing will need to be removed in order for the Firenock to work properly.  Some people have tried to glue the circuit into the nock so that it would work in aluminum arrows, but the performance and results have been marginal at best.  Thus we do not recommend to install Firenock system be installed in ANY arrow that has a Uni-Bushing system installed.

   Firenock "E" style nock is what is needed to fit the A/C/C Pro Hunter arrow.  A/C/C Pro Hunter all have an ID of 0.227"and an OD of 0.270", 0.275", 0.280, and 0.285" for 440, 390, 340 and 300 size respectively.  With the factory uni-bushing installed, it is very easy to think that a Firenock "A" style will fit as the Easton "X" nock is about the same size.  This is not the case, in order for Firenock to work properly, the Firenock unit must make no less than 3 full circumference contacts with the inside wall of the arrow shaft.  The presence of a Uni-bushing makes it impossible for Firenock to work properly.  The circuit will fly out from the nock when shot at any object; the entire unit will also not be able spin balance inside the shaft.  These are the only immediate issues that had been observed.  Therefore in order to use Firenock in the A/C/C Pro Hunters, the uni-bushing must be removed.  Since the uni-bushing used in the Pro-Hunter is glued in with very strong black glue, forcing it out is close to impossible, and heating the shaft will cause separating of the aluminum from the carbon layer.  This leads to the only obvious solution, to cut it out.  After the X nock is removed, cut the shaft at 0.375"; or 0.9" including the nock.  The uni-bushing from the very tip to where it ended is ~0.325" or ~0.260" sleeve with a ~0.070" collar, and the X nock is ~0.63".  Square the shaft and your ACC Pro Hunter shaft is ready to accept a Firenock "E" nock.  Please note that there may be a tiny bit of polycarbonate to shave off from the shaft when you push in the Firenock "E" style nock the very first time, this is normal and part of the "E" nock's multi-diameter/size fit design.

   To fit a lighted nock inside any shaft, the presence of uni-bushing will be detrimental to the arrow flight.  Therefore one must remove the uni-bushing and fit the nock inside the arrow tubing.  With minor modification, the Firenock "GS" series nocks will fit Easton A/C/C 3-60/340 arrows.  Use a razor blade and shave off the 8 ridges on the nock cylinder.  By shaving these ridges off, you will reduce the Outer Diameter (OD) of the nock to 0.2405" which would allow the Firenock to make better contact with the interior wall of the arrow shaft, 0.240".

   To fit a lighted nock inside any shaft, the presence of uni-bushing will be detrimental to the arrow flight.  Therefore one must remove the uni-bushing and fit the nock inside the arrow tubing.  After the tests, we concluded that Firenock 'E' style nock can fit all the following sizes with no or some modifications. Firenock 'E' style design is based on an oversized Firenock "A" style mould which has a cylinder of 0.2047".  Now with the 12 ridges being 0.0129" high each, it can easily be shaved to fit.   Size as follows:
        Epic/Excel has an inside diameter of ~0.232" or 5.92mm => No modification
        A/C/C 3-49/390 has an inside diameter of ~0.230" or 5.86mm => No modification
        A/C/C 3-39/440 has an inside diameter of ~0.220" or 5.56mm => Need to shave off half of all ridges to fit
        A/C/C 3-28/500 has an inside diameter of ~0.205" or 5.21mm => Shave off all ridges to form a tube of 0.2055"

    Most Carbon Impact shaft's ID is 0.242".  Firenock "S" style is design to fit any archery projectile that has an ID of 0.242" to 0.246".  In some cases, the ID due to rough cutting or manufacturing variance, can be as small as 0.2415".  It may feel a tight to someone, but it will fit that shaft no doubt.  One can smudge some bow wax on the colors of the nock as lubricant to make the installation easier.  For those who prefer finger tight installation on the "S" style Firenock for ease of battery change, you can slightly shave off the 2 flat top pyramid at the base of the nock, shave down the eight ridges, and slightly round out/burr out the inside of the shaft for easy fitting.

  Firenock now offers the "F" style nock for those who prefer a flat nock for their crossbow.  It comes in a 3 pack just like Firenock "GC/GH" but with flat nocks "GF".

    Firenock C and F are both triple O-ring design.  Each package of Firenock standard size crossbow nocks come with 4 sizes of O-rings.  By following the O-ring installation chart in the installation manual, you can fit a Firenock C/F nock into nearly every standard crossbow bolt that is listed on back of the installation manual.

    Firenock crossbow nocks use a dual O-ring system for holding onto the bolt, so the nock can be field replaced and field change the battery with no tools.  This design is especially critical as it will not allow the nock to pop out even under extreme force.  The dual O-ring on the nock will prevent one from just pushing in the nock, or a gap will appear.  By the same process, it also does not allow one to easily push in the nock in and be flush.  If there is a gap between the nock and the bolt end, the nock may crack upon impact as there is no full contact surface to transfer the force evenly.  The only known way to get the nock install flush is by twisting the nock in slowly while inserting it and pulling it out slowly with continuous force.
    In case you using slim crossbow bolt like Carbon Express crossbow bolts, Firenock "Y" style is what should used.

    Firenock "Y" crossbow nocks tube diameter is 0.270" and with the ridge it is 0.282".  With ridges it fit the Carbon Express crossbow bolts and Parker Red Hot nicely.  With the ridges all shaved off, the tube fit the Crossfire bolts made by Vapor by Gold Tip.

    Firenock crossbow nocks use a set of specific O-rings on the nock.  When one use the O-ring that is larger than the size it is call for (especially on the grove where the nock allow the circuit board to clip on it), it will fail.  The oversize O-ring will pinch the circuit down and disengage the clip and lock system.  Upon impact, the circuit will disengage as the clip and lock system are no longer engaged.  Picking and installing the right size O-ring is the key.  When in doubt always use a smaller O-ring on the grove that the clip and lock system dent resides.
    If one shot into very hard target, polycarbonate nock's clip and lock system can be torn due to the impact.  Hard target like Spiderweb, 400fps are example of a few of the typical hard targets.  To shot at those targets with Firenock, installing the optional Extreme shock battery end cap is recommended.

    Firenock, LLC is located in Henry, IL, USA. Firenock was conceived and designed in the USA and its main components are made in the United States. Packaging and assembly are also mostly done in Henry, IL. American made components are the most costly production item that we have and they represent over 55% of what you pay for in the Firenock "GS".  The mini-acceleration switch in the Firenock "G" nocks is custom-made in New Jersey.  Other USA-made components come from factories located in California, New York, Texas, Maryland and Illinois.
    The market which we live dictates that we must provide the lowest possible price; with the highest quality product to our consumers.  To achieve the lowest price and still maintain the highest quality, we have our products custom-assembled and clamshell packaged in China, (poly-cell packaging is done in the USA).  If our products were to be totally assembled and packaged in the USA, with components made in the US, Firenocks would have to be priced higher than the market would bear.
    However, the Firenock and Lightning Nock products that you purchase on our web store are totally assembled, poly-cell packed and printed in Henry Illinois, thus by The United States of America Department of Commerce's standards, these products are qualified to be labeled as "Made in USA".

    The Firenock "G" series is not just a simple wire with an LED attached, a re-assembled fishing bobber light in a nock, or some custom integrated circuit glued into a stock nock.
    To make "The Most Advanced Lighted Nock", we must purchase the best materials and develop or locate the best manufacturers.  We chose 0.0001 mm poly carbonate, molding steel from Germany, and the highest-quality resin force-injection to get the best light transmission and translucence properties. We have also chosen to use only optical quality poly carbonate.
    For the brain and soul of a Firenock, we begin with a 2-layer circuit board; utilizing 24K gold plated connectors that are soldered at exactly 90 degrees to the board.  SMT machines usually only deal with 2 axes and not 3 axes that we specify, so we developed a special process to bring you higher quality.
    Next, inside every Firenock there is a custom designed acceleration switch and a Motorola (On Technology) chip set to drive the fuzzy logic circuit.
    We attempted to source high-ratio Titanium alloy wire from Central Europe and failed (the US Department of Defense would not give import approval).  We were able to identify a totally different alloy wire in Japan which met our exacting specifications.  The wire that we chose is able to withstand the repeated shock of a 400+fps crossbow arrow shot into a 2" x 4" without a malfunction.
    Firenock also designed its own battery.  We custom-make an epoxy-sealed battery that has a shelf life of up to 13 months when the battery is stored at 30° F.  Inside the battery is advanced chemistry that allows for a working temperature range of -15° F to 140° F.
    In the case of the battery cross lock wire, we had to develop robotics that would form both a cross and a 360° backward bend.  Traditional methods like manual jigs and most spring banding machines, just will not work with these close tolerances, sharp bends and thin wire.  Both processes will break the 0.42 mm titanium alloy wire; so they were unacceptable.  We needed a 4-axle, 2-arm system and that is the system that we now use.
    The nocks alone required at least 160 engineering hours and 10 molds to perfect.  Do you know how expensive a 0.001 mm precision mold is?  We use a five-piece mold instead of a three-piece mold to form the two clips, the lock hole and to add a diamond pattern to the ridges.  Then a 0.000,02 mm polish on the prongs gives your Firenock the cleanest release possible.  If that is not enough, there are mold and cavity numbers on each nock for quality control. With all this exacting attention, a set of nocks (with as little as 0.000009" production variance) can only be achieved when cavity numbers are matched.
    We at Firenock understand that this all may have sounded very scientific and technical, but without our attention to detail; how can we approach perfection?  Bringing you "The Most Advanced Lighted Nock" is not an easy thing to accomplish and it's definitely not an inexpensive venture.  Firenocks are simple to use and reliable because we put so much thought and effort into them and that how we ensure that the Firenock that you purchased will live up to our slogan.

1. Previous Firenock products required a magnet for activation, while the Firenock "G" series utilizes a custom-engineered acceleration switch.
2. Previous Firenock products retailed for $49.95 and the Firenock "GS" is priced at $44.95 for a 3 pack without the battery.
3. Previous Firenock products were only available in 3-packs for $49.95 while the Firenock "G" series offer a single pack starting as low as $20.95.
4. Previous Firenock products were only able to absorb a 17g shock, while the Firenock "G" series can absorb 150g.  This means that with the "G" series, you will have few to no accidental activations.
5. Previous Firenock products would accidentally activate when the arrow was horizontally dropped from above 16"(0.5M) onto a concrete floor. The Firenock "G" series will withstand a horizontal drop up to 21'(7m) without activation.
6. Previous Firenock products standard-size nock weighed ~25 grains.  The Firenock S weighs ~27 grains.
7. When shot from a 70lb. bow, with an arrow weight of 390 grains and leaving the bow at 260 ft./sec., previous Firenock products would impact the target 1/16" higher at 20 yards than Firenock "G" series. The difference is due to weight differential as indicated in Item 6 above.

    After installation, it is virtually impossible to tell the difference between the two.  Both use the same poly carbonate nock.  The only physical differences are as follows:

1. The Firenock GSH is about 5 mm longer internally than the previous Firenock.  This is because the Firenock GS circuit board is longer so it can accommodate the acceleration switch.
2. The Firenock "G" has electronic components on both sides of the circuit board.  The previous Firenock reed switch was mounted on one side of the circuit board and the electronic components were mounted on the other.
3. The Firenock "G" uses an ultra-mini acceleration switch as compared to a reed switch in the previous models.  The switch is inside of a metal canister which has weight and size issues.  In order to obtain the best spin-balance performance possible, the metal canister is mounted THROUGH the circuit board.  To achieve equal balance on both sides, the switch is actually mounted in a hole inside the 1 mm high-tensile-strength circuit board.

    The Firenock "G" series uses a custom-designed and custom-built ultra-mini acceleration switch (UMAS).  This is the smallest acceleration switch ever built commercially.  The size of the switch is only 2 mm in diameter and 6 mm long.  When a certain miniature size is reached, the material cost is no longer the major issue; the tooling is where the expense is now.  In the case of the UMAS, the costs add up in all areas.
    To make the UMAS as small as possible, we needed custom tooling that is not normally seen in the industry and which had to be developed just for us.  Firenock had been quoted as much as $450,000.00 for just one part of the automation… to save $1.00 per switch on time and labor!
    To make a switch that is reliable and can handle no less than 10,000,000 cycles of activation and up to 1,500G in the canister, with metal that does not corrode; there is nothing known to mankind that is better than silver or gold.  Thus all Firenock UMAS are internally-plated with no less than 2µm of gold.  The ball is also plated with gold and so are the spring and inside the pin.  With gold prices as high as at $900.00 per troy oz. the expense to manufacture a lighted nock of the highest level of quality definitely adds up.

    The black shrink tube that present on the pin of the Firenock standard battery should be removed before installing it into a Firenock.  This shrink tube is to further prevent the battery from shorting from each other during transportation.
    In case one wants to store Firenock standard size batteries in a cool dry place, it is recommended that one should tape the battery so they will be NO CHANCE for the batteries to touch each other.  If they are just put inside a bag and allow to be free moving, the chance that one battery's pin and body touching the other battery can happen.  When ever this happens, the battery life can be cut by a fifth to totally drain out.  Thus it is recommended that one should not take the battery out of the Firenock once it has been installed till the battery runs out.  There is an exception to this case, it is when takes a flight with Firenock, it is suggested to remove the battery of the Firenock as the X ray machine can fry or confuse the system when it is powered (battery installed).

    For Firenock "G", our test results showed that the new battery (new chemistry mix) will allow the light to be lit for about 24 hours and for up to 48 hours in 1-hour-burn increments.  The LiMO2 CR425 pin battery has a shelf life of 13 months at best if stored at room temperature.  To ensure perfect operation of Firenock/Lightning Nock a new set of batteries are recommended for every season or any major hunt.  Firenock's standard battery has proven to work as low as -17F.  This low temperature capability is the reason that the shelf life is that short.  That's said, Firenock's standard battery due to its super volatile electrochemistry is also about 3 times more cranking amp than most standard pin size battery.  The usual blast rate of a pin battery is about 50+mA while Firenock's pin 425 is as high as 163mA.

   Many customers have raised concern that the standard Firenock Battery FNLN61:[BR] has only about one year shelf life.  They requested us to provide a longer shelf life battery.  At this time, Firenock LLC has already offered the brightest and the most aggressive electro chemistry battery on the market; some things have to give in order to provide a longer shelf life.  With the new battery FNLN49:[BL], this allow us to offer you choices, and you can decide what is the more important factor for your lighted nock operation.  Their specifications are as follows:

	Item # and Description	FNLN61 (standard)	FNLN49 (Light/Longer shelf life)
	weight (grains)	9.0 +/- 0.25	8.5 +/- 0.25
	Shelf life (months)	13 +/- 1	36 +/- 4
	Lowest Operating Temperature (F°)	-17	-4
	Highest Operating Temperature (F°)	140	160
	O-ring Grove Location	center	near end of battery
	Initial Blast rate (mA)	163 +/- 15	68 +/- 5
	Burn time with Firenock (Hrs)	24 +/- 4	18 +/- 3
	Burn time with Lightning Nock (Hrs)	20 +/ -4	15 +/- 3
	Suitable for Bow fishing	Yes	No
	Battery Pin O-rings (included)	3	3
	Price (MSRP/MAP)	$10.95	$10.95
	Click to Purchase at http://shop.firenock.com	[BR]	[BL]

    Starting 2010, three tiny battery pin O-rings now comes standard with all Firenock battery pack. Our experience of the epoxy seal cracking and falls off lead us to this decision.  As of October 2009, the battery manufacturer declare it not critical for the function of the battery, thus they no longer has an epoxy seal at the base on the pin.  We at Firenock feel that it is a good insurance for Firenock/Lightning Nock to function reliability to have some insulation and shock absorbing material, but agree that the epoxy seal is not the answer.
    For those who are concern about the shock that their batteries are still asserting to the circuit board on batteries that they have purchased, Firenock LLC offer these O-ring as an accessories [OB].  This tiny o-ring goes between the circuit board and the battery for shock absorbing and insulation.  Photo of how and where it need to be on the battery below.

    Firenock's core system is a set of Motorola fuzzy logic chip sets.  If the battery is installed in the nock the system is powered; the high power X-ray used in airports to scan luggage can cause the system to get confused or damaged.  To prevent this from happening, remove the battery when doing air travel.
    In the situation that one forgot to remove the battery during air travel, remove the battery as soon as possible after the flight.  Let the nock sit still without the battery for a few minutes, reinstall the battery and test the system no less than 3 times to make sure all is working properly.  If the nock still turns on by itself after the reset, the logic circuits are damaged and need to be replaced.  If the nock is purchased within 30 days, the exchange will still be valid.  More than 30 days, one can use our refresh service and get a new set of Firenocks at a deep discount price.

    Some customers have notified me that their Firenocks have not performed well in a rain storm. After Firenocks were submerged in water that contained a touch of salt, we confirmed that they were correct. When 36 samples were submerged in the salt water, with or without the housing, within about 30 seconds 1 out of every 6 were activated and 30 minutes later, 21 of them were activated.  Right out of the water, some would not even work or turn on very easily.  However, after they were immediately air dried, they all can functioned correctly.  Based on this evidence, we concluded that the titanium wire and the gold plated connectors had done their jobs.  We suspect that the new ultra light epoxy may not be as water resistant as the epoxy that we used last year.  So water proofing of the entire electronic system is the key.
    When we soaked samples for over a day inside of damp paper towels, nearly all samples were dead overnight.
    For Firenock made on or before 2008, the immediate fix is to smear some bow wax around the neck of the Firenock, so it will form a wax seal.  Due to its ultra high ridges, this is also true for the Firenock "E" series.  Due to its thin tube and end ridges, a smear of wax is even more critical for "A" series nocks.  Since "S" series nocks have a compression fitting at the end, using a little bow wax is a good way to insure that water does not enter the circuitry.
    For 2009 or later Firenocks, we have a source for new UV cure epoxy glue.  This UV cure epoxy glue will provide much better waterproofing protection.  This glue is 26,000% more water resistant than that we used in 2008.  To totally eliminate the potential problem of oxidation and water damage on the titanium battery wire connector, we will also plated the wire with 24K gold.

    Most Firenock are perfect fit inside the shaft, if this happens beside the "A" nock, you may have the wrong style nock for your arrow/bolt.
    If that happens, the simple way to remove the nock is to use a set of pliers.  There is a high probability that you will damage the nock.  If the nock is damaged, you will only need to insert the circuit board into another nock after you remove it from the shaft.  To prevent the nock from sticking inside the arrow shaft, it is recommended that you apply a small amount of wax or vegetable oil to the nock before insertion if the nock felt exceptional tight, or it is a Firenock "A", "V" or "Y" nocks which bow wax on the nock cylinder is recommended to be use for installation.

    You can be assured we continuously strive to improve the design and the manufacturing process of Firenocks.  The current Firenock "G" series represents the pinnacle of the design that we have come up with to date, but we will not rest on our laurels!

    The Firenock "G" series is a premium and state of the art product.  We use the best technology and the most reliable components to build Firenocks.  In the Firenock "G" series, there is so much gold, silver, titanium, and precision tooling involved that it just cannot be sold at a lower price.  With that said, we do offer the Lightning Nock "G" series for the budget-minded archer.

		FIRENOCK	LIGHTNING NOCK
	"G" Switch Made In	USA	China
	"G" Switch spec	65G	~40G
	"G" Switch cycle life at 65G	+10,000,000	~1,000
	Continuous Burn time w [BR]	~24 hours	~18 hours
	Continuous Burn time w [BL]	~18 hours	~14 hours
	Logic Chip Set	Motorola (On)	Toshiba
	Clamshell Size (single pack)	5" X 7"	2.66" X 3.75"
	Nock Color	Red (Blue, Clear, Green, Orange, Pink, Smoke, Wood, and Yellow)	Orange
	LED Color	Red (Blue, Clear, Green, Orange, and Yellow)	Red
	Complete Nock Weight	~27 grains	~28 grains
	Connector (-)	Gold	Tin
	Connector (+)	Gold Plated Ti alloy	Stainless Steel
	Drop Tolerance	~21´ / 7 M	~6´ / 2 M
	LED Brightness	11,000 LUX	6,000 LUX
	Nock Brightness	1,650 LUX	1,800 LUX
	LED Focus Angle	15°	35°
	Packaging	1, 3, & 6	1 only
	Practice Nock Included	2, 3, & 6	none
	Practice Nock Color	Green	N/A
	Price (Single Pack)	$20.95	$12.95
	Style Available	A, C, E, F, S, V, & Y	S only
	Shock and Knock Proof via	MIL Spec O-ring(s)	Rubber Band
	Suitable for Bow-fishing	YES	NO
	Refresh / Upgrade Fee (1)	$10.00	$12.00
	Refresh / Upgrade Fee (3)	$25.00	$33.00
	Warranty	30 Days	DOA
	MTBF Cycles(Shots)	~30,000	~600

    Due to the low cost of the Lightning Nock "G" series, it only comes in one style; the Standard "S" which has the same poly carbonate nock as Firenock "S" and thus fits the same arrow shafts as Firenock "S".

    Like all electronics, poor battery connection is the number one cause for failure to activate.  First check to make sure that the first cross-lock of the battery wire connector is seated tightly at the neck groove of the battery (refer to the diagram in the installation manual on the installation page for more details).  Also make sure the cross-lock battery wire connector is not touching the center battery pin.  If it has been touching for an extended period of time, the battery may have already been shorted out and a new battery is required.
    If the nock is within the warranty period, please call us for advice or send it back for evaluation.

    If everything is installed properly, it is physically impossible for Firenock/Lightning Nock to shut off in mid air or upon impact.  Firenock is not a mechanical switch system but driven by a fuzzy logic system; unless the circuit board was physically broken, Firenock/Lightning Nock cannot be shut off in mid air or upon impact.  With that understanding, it becomes quite easy to understand the issue is not the circuit, but the delivery of electric power to sustain the system.  Like all electronics, the continuous supply of power is what keeps everything going.  Any disruption of the flow of electricity will cause the system to shut off, as the system will treat it as a reset.
    All Firenock LLC manufactured lighted nock since v1.5 to current use the same battery retention system design.  The International Patented, and US Patent Pending battery wire connector is not just the battery holder, but also the positive battery connector to the pin battery which powers the system.  If the battery was not installed properly, the system will not function as designed.  As of 2010 to further enhance the reliability of the battery retention system, we have eliminated the epoxy seal on the battery and go with an O-ring shock absorbing/insulation system.  Thus the only way to prevent mid air shut off, shut off upon impact, or any other undesirable effect that cause by improper battery installation is to ensure that the battery is installed properly.
    If the battery O-ring was not installed for any battery that do not have an epoxy seal, the casing of the battery (positive) can contact with the gold negative pin connector on the circuit board on impact and cause shorting of the entire system.  Directly below are pictures of Firenock standard battery [BR] with and without epoxy seal and both with no battery-pin-O-ring installed.  The battery wire were correctly installed in both pictures.  Please note the gap between the battery head and the negative pin connector when there epoxy seal AND battery-pin-O-ring were both absent, which can be one of the cause of the issue.


    The follow picture is what a typical bad battery installation with battery-pin-O-ring installed.  Please take notice of the cross-lock wire first loop is over the head of the battery instead of a cross forming inside the neck of the battery.

    If the battery wire is as picture above, the following issue(s) may occur:

1. After the brand new battery is installed, the lighted nock light will lit once and go dim after the first shot.  This is due to the wire connector making contact with the center pin of the battery and be drained/shorted as the battery move inside the shaft as it is being shot.
2. The lighted nock glows very dim and the battery is dead in a day or two only after a few shots.  This is due to the wire connector had contacted with the center pin a few times and the battery was shorted and it could no longer sustain a continuous power output.
3. The lighted nock shut off in mid air and/or upon impact.  This is due to the battery is not securely locked in. As the arrow flew towards the target, the battery vibrates, the connection between the wire and the power was cut. This causes the system resets and the light goes off.
4. The battery dislodged from the battery retention system and fly forward and be smashed into the insert of the arrow and be deformed.  As the battery cannot be not held securely by the cross-lock wire upon impact the force of the impact can dislodge the battery.

    Therefore the only way to assure that your Firenock/Lighting Nock works as intention is to make sure the battery-pin-O-ring is installed and the cross lock wire after installation looked exactly like the picture below after the battery was installed.

    In situation after changing the battery, the perfectly working Firenock still has similar behavior as above and the cross-lock was also installed perfectly, you can be sure that the issue is in the C-clip (the 2nd part of the battery connector).  When one changes the battery, it is not unusual that the C-clip can be over stretched.  The C-Clip is the primary contact to the positive end of the battery; the front cross-lock loop primary function is battery retention.  When the C-clip was over stretched, it will not form a perfect connection/grip with the battery.  The simple fix is to remove the battery, compress the C-clip with your finger, so it will form tighter hold onto the battery.
    Last, there can be a faulty battery, too.  The usual symptom of a bad battery is that upon activation, the lighted nock will give out a bright glow then dims to shut off within a few seconds.  By changing the batteries (a known working one) you will know if it is a battery issue.  If it is indeed a bad battery situation and the battery is newly purchased, please send it back for replacement.

    In extremes of temperature or humidity, a Firenock may require up to 8 seconds for the system to reset before it can be deactivated.  In addition, Firenocks have a built-in motion sensor for ultimate shut-off protection.  A Firenock will remain lit when it encounters shock and motion within the first 4-8 seconds after it has been activated. 
    In case of non-red color hunting Firenock, they all use a different circuit from the basic red LED circuit.  The power draw form them is significantly different.  Since the logic gates variance will be too low to be recognized whenever the power is low and be considered inconsistent, it is designed so it will not allow itself to be turned on whenever the power of the battery drops below 30% of its total capacity or the voltage drops below 2.7 volts.  The Firenock is still good to use, just that one can no longer drop the arrow on the nock to shut the nock off.  It is part of the non-red color circuit design.  A new battery is all it takes to solve this situation.
    If the LED does not turn off after you follow the manual shut-off instructions and the lighted nock is within the warranty period, please call for technical advice or send it back to Firenock for evaluation.  In case of any target circuits, if it does not shut off by itself 20 seconds after activation, and the lighted nock is within the warranty period, send it back to Firenock for evaluation.

   There are several reasons why there might be a rattling sound when you shake the nock:
After 2009: the 0.15mm gap between the circuit and the nock is eliminated and -0.02mm has been added to make sure that there will be no space for the circuit to rattle.  If one still hears that rattling sound, you are actually hearing the switch and the ball system in action.  When you shake the arrow, the ball of the acceleration switch will rock inside the metal canister; as it is inside a carbon tube which now behave like a amplifier.  There is no way to eliminate that noise, as it is part of the design.
Before 2009: there are 3 main reasons that may cause sound in a Firenock.
    1) There may be a 0.15 mm gap between some older Firenock/Lightning Nock LEDs and the poly carbonate nock.  Spread a thin layer of Vaseline or silicon gel on the LED and re-insert it back in the poly carbonate nock.  The gel should take up the space and stop the rattling.
    2) After shooting into a hard object, the circuit board clip and lock may expand the holes on the sides on the poly carbonate nock.  Nock locking holes can be damaged and this will allow the circuit board room to move inside of the nock.  These enlarged locking holes will exaggerate the effect of any gap as in Item 1 above.  Replacing the poly carbonate nock should resolve the issue. 
    3) Some Firenocks come with several sizes of O-rings.  Installing the incorrect O- rings will allow the battery to knock against the inner wall of the arrow shaft.  Lightning Nocks (prior to the release of "LG") required the optional rubber band to stop the knocking sound.  This rubber band is now standard-issue with the Lightning Nock "LG" series.  The Firenock style [S] O-ring will work on the Lightning Nock "LG" series and they can be purchased on Firenock web site as an accessory.

    Firenock style "A" is the tightest fit of all 5 styles of Firenock.  It is due to the small size of the 0.202" arrow size.  Without being as tight as it needed to be there will not be enough pressure to hold the nock in.  Not to mention that there is also not much room for anything.  Firenock "A" style is also the only style of Firenock that lubricating the nock is a must for easy and successfully installation.  Firenock "A" style has an O-ring that is meant to be a one time use.  The O-ring in style "A" is meant to be deformed to provide extra binding effect with the internal wall of the shaft.  This is why "A" style is one of the strongest designs while being the lightest due to size.
    Due to the unique design of Firenock "A" it is the only Firenock that one should not do a normal single direction rotate and pull method to remove the nock from the shaft for battery change or nock replacement.  When one tried to remove the nock, twisting it like one usually does with other nocks may cause the end loop to break, and may break the O-ring during the process too.  One should jiggle the nock back-and-forth.  Thus Firenock suggests not to twist the nock, but rather (with non-teeth/flat pliers i.e. nock may need to be replaced) to just move it back and forth, with the main effort focused on pulling the Firenock straight out of the shaft.  If the O-ring is left in the arrow shaft, one should be able to turn the shaft upside down and shake the O-ring out.
    O-ring and nock may need to be replaced whenever the nock is removed from the shaft.

    Firenock uses a battery that has an aluminum shell which is the positive end of the battery. The battery wire connector needs to make constant contact with the shell in order to keep the system operating properly.  What you observed can happen in cases when the battery is not installed properly, as in:
    1) Dirt or oil is deposited on the shell of the battery during installation
    2) The "C" lock at the end of battery wire connector is bent open, leaving it too loose
    3) The battery wire is not cross-locked properly
    4) The epoxy cap of the wire is broken and the shell is making contact with the pin connector on impact
    In situations 1-3 all involve the battery wire connector not making full contact with the battery.  There is an easy fix.  Remove the battery and reinstall it.  In situation (2), please press the "C" lock close a bit with your finger so that it grips the battery tighter.  Then all will be fine again.
    In situation 4, a new battery is needed to fix the issue.
    If the nock still does not function properly after this repair and it is within the warranty period, please call for advice or send it back to Firenock for inspection and/or replacement.

    When one is installing a Firenock in an arrow that contains a weight tube, one must cut some off a portion of the weight tube to make room for the Firenock.  Even if the weight tube is cut perfectly, there may still be some room for the weight tube to move.  When one hits the target, the forward motion and impact may cause the weight tube to move backward and forward.  This hammer-like action may damage the circuit board.
    With the standard Firenock it is not recommended that a weight tube be used.  This is because the violent motion of the weight tube when hitting the target will hammer the circuit and destroy the Firenock. This is no longer an issue if you install Extreme Shock Battery End Cap, which is available in every style of Firenock, which acts as a protector for the circuit from the impact and trashing of the weight tube on impact.

    Of course, you can send it in.  If is determined that it slipped by our QC process, it will be replaced.  Or, you can see if you can make it work again yourself. 
    "A" style lighted nocks made by Firenock are the only style that may face this issue; even if the circuit is totally functional.  The issue here is the size and how "A" styles must be made in order to be able to be installed inside the "Axis" style slim diameter arrows.  Both sides of the circuit board of "A" style circuit boards can possibly touch the inside walls of the arrow.  Although extreme care is taken when "A" style circuits are made, even though they are also coated with a very thin epoxy coat for added protection, things do happen.  Once in a while the solder on the negative pin connector may be a little thicker/higher than what it should be.  This lump/point of solder may contact the side wall of the arrow and it may short circuit the battery.  This short circuit will cause the nock to fail to activate.  To determine if this solder is causing the problem, remove the lighted nock from the arrow shaft; drop it (nock-down) on the counter top.  If the nock turns on, then you need to use a razor blade and shave off the excess solder on the connector side/negative side of the circuit board (the wire side is the positive end of the circuit).  Blow off all solder shavings from the circuit board and apply a coating of nail polish to the shaved area. 

    CX bulldog collars must be GLUED to the shaft in order not to damage Firenock/Lightning Nocks.  When an extreme impact occurs, such as when the arrow hits a solid object like heavy bone, a rock, hardwood, video screen, etc., the Firenock/Lightning Nock may be damaged beyond repair.  The Firenock compression system will prevent most damage that is caused by sudden impact and will probably prevent the nock from blowing out.  But, when the bulldog collar is present; a whole new dynamic happens.
  The bulldog collar has a higher density and it will try to move backwards against the poly carbonate nock.  It is not difficult to imagine that the Firenock poly carbonate nock is on the losing end every time.  The looser the bull dog collar is the more damage that is done to the nock.  To make matters worst, whenever the nock breaks, the LED will probably also be broken.

When your Firenock polycarbonate nock crack, there are usually one of the 3 reasons below:

1. Firenock use the best polycarbonate material and best engineering effort when the nocks were made.  During manufacturing process, tiny bubbles do can occur and even with the best effort some do escape our QC process.  When this occurs, a weak spot on the nock is created.  When bend at the nock prongs, that tiny bubble will lead to a crack on the nock, just like a stone chip on wind shield, the nock prong will break off easily.  Is that is what happens, please send back the nock (just the polycarbonate part) and a new set will be on its way back to you.
2. Some bow string have very thick serving, which is way thicker than than 0.118"(3.0mm) which is the norm.  When that happens, the nock is way over stretched and cannot perform as designed. At this time, there are only 2 ways we know to resolve this issue.
       change the serving on the string to a thinner one
       change the bow string with thinner serving
   If both methods above are not an option, please return your Firenock to where you had purchased it for a full refund within 30 days of purchase.
3. In case of older bow strings which may have uneven serving; those bumps and groves will mar the inside of a Firenock polycarbonate nock.  This is especially true on strings that rotate when shot (i.e. if your peep sight need a rubber band to align itself, your string rotates when shot).  This mar on the nock will cause the beginning point of a total nock failure (i.e. a nock prong may break off when shot from a bow).  The only solution to this issue is a new serving or a high quality sting that does not have the above issue.  A sample of a good quality strings are (Pro string, Fury X, Winners Choice)

    In mid-August 2007, Firenock, LLC and Dorge Huang were sued by Easton Technical Products (the maker of Easton arrows, Hoyt bows, Reflex bows, Fuse accessories, etc.).  On March 4, 2008 a Consent Judgment and Permanent Injunction was signed by Utah Federal Judge Ted Steward.  This consent order decided that no magnet-activated lighted nocks of Firenock, LLC could be sold in the US.  This applies only to Firenock v2.0 and products related to that series.  The consent order does not have any effect on our current technology.
    On January 10, 2008, Firenock, LLC introduced the new Firenock "G" series to the world at the Archery Trade Association show in Indianapolis.  This new Firenock uses a mini "G" switch (based on acceleration) instead of a reed switch (which is responsive to a magnet field).  Being forced to change our design could have been a disaster for another company. But instead, it has resulted in an even more technologically advanced and more dependable lighted nock.  We are now moving full-steam-ahead and producing what is truly "The Most Advanced Lighted Nock".br/>

    The Firenock "G" series uses the same poly carbonate nocks, O-rings and batteries as for the older magnetic activated Firenock.  Current Firenock parts are 100% compatible with previous Firenock models of the same type and the parts are interchangeable within types.

    When one shoots a Firenock/Lightning Nock into a Spider web target, most broad-head targets, a Techno Hunt screen, any target that will force the arrow to do a dead stop, or used for small game hunting; the circuit will separate from the nock after a few shots.  The current design of the Firenock/Lightning Nock is not meant to deal with "Dead-Stop" impacts.  The nock is doing all the work in holding the circuit and battery in place, thus a slow stop target or actual hunting situation is what it is designed for.  Firenock/Lightning Nock's are designed to give when extreme shock is applied to the system.  The nock and battery are both field replaceable and it is a lot cheaper to replace a torn nock and/or a battery than breaking the expensive circuit as it may get damaged while absorbing all the shock.
    One can glue the circuit to the nock so it will not become an issue, for a while.  With that approach, one looses the flexibility of field changeability of the nock and the battery wire will become the weakest link of the system.  The fact remains, it will eventually fail if one decides to continuously use those targets.  Firenock does make an accessory to address this issue.
    We also notice that the bows are getting much faster, and the targets are getting harder to stop the arrows they release.  Based on our testing, any bow that can shoot arrows at over 300 FPS, the extreme battery end cap becomes necessary due to the fact that there is just so much force needed to be dealt with.  By around September 2009, there will be 3 offerings of Extreme Shock Battery End Cap (ESBEC) for Firenock "A", "E" and the "S" styles nocks.  The current "XE" will be changed to "XS" to reflect the different sizes to fit the 3 styles of nocks.  "XS", "XA" and "XE" for "S", "A" and "E" style respectively.
    To achieve ultimate flexibility, light weight and low cost, Firenock/Lightning Nock comes with the minimum of what one needs to use in a lighted nock in most common hunting situation.  Firenock/Lightning Nock allows one to easily field change the nock with our International patented clip and lock system.  In order to achieve the above, the ESBEC is only offered as an optional accessory which one can purchase if the extra durability is needed instead of a cost that must be added to the casual archer.

   If you will be using your Firenock for video dart shooting or to shoot at hard surfaces like concrete blocks, the end-caps are a must.  From testing, we concluded that it is absolutely necessary for video screen-shooting if you want your Firenock to survive.  This activity is one of the most punishing activities that you can do to a lighted nock of this design.  The constant pounding of the arrow into the screen and the arrow dropping to the floor will damage the poly carbonate nock, circuit board, and battery eventually.  If you enjoy these archery activities, you must use the end caps.  From our field tests, the Firenock "G" system will not fail when the end caps are installed.  The "G" system will survive a few dart league sessions.
    If you are a target shooter or shoot a lot at non layer based targets, the end-cap would be a really good idea as standard equipment when you use Firenocks.  This accessory totally eliminates the stress that is put on the nock during impact. This also perfectly holds the battery in its place as it has a built in battery holder.  Last, one can recover the ESBEC and install it into another arrow.  The end-caps are made of heavy anodized aircraft grade aluminum.   All one needs is a new O-ring after recovering it from the old arrow in order to install it into a new arrow.

    Firenock Extreme Shock Battery End Cap adds:
        ~2.5 grains for the "S" style ("XS":FNLN64)
        ~2.0 grains for the "A" style ("XA":FNLN47)
        ~2.0 grains for the "E" style ("XE":FNLN48)
        ~2.0 grains for the "C" style ("XC":FNLN90)
        ~2.0 grains for the "F/V" style ("XF":FNLN92)
        ~2.5 grains for the "Y" style ("XY":FNLN91)

    Firenock ESBEC uses O-ring as a squeegee towards the glue, so there should be no noticeable glue left on the shaft where the Firenock makes contact after the ESBEC was being push down into the shaft.  This however is not going to work as intended if the field point or broad head was still present on the shaft.  The air trapped on the front of the shaft is what is causing this issue; back pressure form the trapped air.  In most cases, you may not even be able to push the ESBEC with the tool to start with; but if one push hard enough it can be done.  There is no real solution to this after it is being done; therefore please remove the field point or broad head before installing the ESBEC as instructed in the manual on line one(1).

    It is true that with (ESBEC) installed, it is technically impossible for your Firenock to go off on impact.  With the support of the battery, even with extreme force the impact the connecting of battery and circuit should be perfect under all conditions.  But improper gluing can lead to malfunction, below is how...
    For those who had used gel type super glue (Ethyl 2-cyanoacrylate (C6H7NO2) or methyl 2-cyanoacrylate (C5H5NO2), aka, Goat tough, Bondini, Super Glue Gel, etc.) to glue the end caps please make sure the glue is absolutely totally dried before you insert the Firenock into the shaft.  If the glue is not totally dry, the vapor of the super glue which will given out in the process of the Gel drying will react with the outside shell of the battery and form a thin white powder film on the battery.  This glue vapor (acrylate) will also form film on anything and everything that it contacts, including the gold plated connector.  The film is not conductive, and thus renders the Firenock to function unreliably as the battery shell is now no longer conductive.
    Scraping the film off seems to work, but that is just way too much work.  Wiping it with hand only make it worst as now oil and film mix together and form a thicker layer of insulator.  In cases that a TON of super glue is used, when even the gold plated wire is showing white powder on it, the circuit would also have to be replaced as the gold wire is also coated with the acrylate and no longer can conduct electricity.  If that happens to your Firenock and it is within 30 days of your purchase, I am willing to exchange your battery and circuit for new ones ONCE; so you can have a perfect reliable firenock to use for this season.

    Firenock GS's circuit board is 5 mm longer than that of the previous Firenock.  Thus you need a 40 mm-long nylon insertion tool instead of the 35mm version you had with the previous model.  Other than that they are technically identical, but the previous Extreme Shock Battery End Cap (Part #FNLN93) is no longer sold in the US.  The new ESBEC "XS" is available now (Part #FNLN64), and is specially-made to work with Firenock/Lightning Nock "S" style lighted nocks. 

    There are a total of 6 tools in the entire Firenock line from the 2006 v1.0s to the current G series.  Due to arrow sizes, there are 2 major groups of tools.  The A and E style Firenock due to its slim size comes with one tool which is made of Aluminum and it had a 2 mm thread at the tip.  All other Firenock styles uses the 5 mm thread tools and they are made of nylon. The only difference is that that they are of different lengths due to depth of each nock style inside the arrow:
        the old v2.0s uses a 35 mm long tool
        the "S" style (XS:FNLN64) uses a 40 mm long tool
        the "C" style (XC:FNLN90) uses a 50 mm long tool
        the "F/V" style (XF:FNLN92) uses a 48 mm long tool
        the "Y" style (XY:FNLN91) uses a 43 mm long tool
    There are a total of 3 actual end caps in the entire Firenock line from the 2008 v2.0s to the current 7 styles of G series Firenocks.  For ease of identification, they are anodized in 3 different colors,: Pink, black, and Gold
        Old magnetic v2.0s Firenock - black
        The A style Firenock - pink
        The C style Firenock - gold
        The E style Firenock - pink
        The F style Firenock - gold
        The S style Firenock - black
        The V style Firenock - gold
        The Y style Firenock - black

    Within the warranty period as stated on the package, please visit warranty for more detail.  If your product warranty has expired, you have the option with our refresh and update services which are only available in the United States.