ACC pro Hunters and other arrow with uni-bushings
It may be your arrow as you shot an ACC Pro Hunter. There is an uni-bushing in it. It not only make ANY lighted nock that is the same as X-nock size not work well; as you now have a spin balance issue due to uni-bushing. To make things worst, there is now NO support for the battery as it is allow to free dangle in the air. If you use any X-nock size lighted nock, as the battery is not supported, the battery will disengage from the system when shot at any target.
That is why we at Firenock advice all customer who use ACC Pro hunter to use our E nock which REQUIRE the removal of the uni-bushing. The lighted nock system are now lighter and more accurate.
To learn more about ACC Pro hunter the following will show you. I also provide the link to our FAQ if you wanted to learn more.
http://www.firenock.com/faqs.htm#09_3
Will any Firenock “G” series work with Easton uni-bushing system?
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 that a Firenock system be installed in ANY arrow that has a Uni-Bushing system installed.
Will any Firenock “G” series fit Easton A/C/C Pro Hunter arrows?
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 ends 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.
Will any Firenock “G” series fit Easton A/C/C 3-60/340 arrows?
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".
Will any Firenock “G” series fit Easton A/C/C 3-49/390, 3-39/440 and 3-28/500 and Epic/Excel arrows?
To fit a lighted nock inside any shaft, the presence of uni-bushing will be detrimental to the arrow flight. There 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"
apparently not. Stciking with the lumenoks work everytime and about 3 times brighter then the Tracers.
