oldbuck
01-19-2012, 01:19 PM
1/19/2012
Bow Report …Lateral Nock Travel test
2012 Mathews Helium with “Flexing Roller Guard”
I first shared test reports of “lateral nock travel” in 2010, at that time most manufactures didn’t acknowledge the condition and some did even not know it existed.
The primary cause is cam tilt or lean and the result is that the bow torques in the archers hand as it is drawn.
This torque was always blamed on the archer; today we know that claim to be false. The bow torques/twists itself as a result of cam tilt.
The Tilt Tamer was introduced at the 2011 ATA show to remove cam tilt and bow torque.
I have listed some of the bow manufactures’ who have introduced active devices to mitigate cam tilt and therefore bow torque.
Bowtech, Martin, Strothers, Athens, Darton, G5 Prime…there may be more I am not aware of. A very comprehensive list of companies that now actively advertise solutions to this problem.
Now Mathews has joined the pack with their new Helium which has a “flexing roller guard”. It’s not touted as such but it follows the technology that Bowtech and G5 Prime use, namely a flexing cable guard.
I measured the actual lateral nock travel of a Helium and found it to be about 0.45” which is a huge improvement over the previous rigid Mathews roller guard. For example a Mathew’s DXT I tested produced about 0.90” of lateral nock travel which resulted in allot of torque. For comparison a G5 Prime I measured produced about 0.37” of lateral nock travel.
The Helium’s flexing roller guard bends about 0.50” from brace height to full draw, this produces less cam tilt and therefore less bow torque.
I expect to hear many reports about the forgiving nature of this bow.
I am glad to see that the undesirable bow issue of cam tilt and bow torque is now being acknowledged and addressed.
Thanks
Joe Marzullo
Bow Report …Lateral Nock Travel test
2012 Mathews Helium with “Flexing Roller Guard”
I first shared test reports of “lateral nock travel” in 2010, at that time most manufactures didn’t acknowledge the condition and some did even not know it existed.
The primary cause is cam tilt or lean and the result is that the bow torques in the archers hand as it is drawn.
This torque was always blamed on the archer; today we know that claim to be false. The bow torques/twists itself as a result of cam tilt.
The Tilt Tamer was introduced at the 2011 ATA show to remove cam tilt and bow torque.
I have listed some of the bow manufactures’ who have introduced active devices to mitigate cam tilt and therefore bow torque.
Bowtech, Martin, Strothers, Athens, Darton, G5 Prime…there may be more I am not aware of. A very comprehensive list of companies that now actively advertise solutions to this problem.
Now Mathews has joined the pack with their new Helium which has a “flexing roller guard”. It’s not touted as such but it follows the technology that Bowtech and G5 Prime use, namely a flexing cable guard.
I measured the actual lateral nock travel of a Helium and found it to be about 0.45” which is a huge improvement over the previous rigid Mathews roller guard. For example a Mathew’s DXT I tested produced about 0.90” of lateral nock travel which resulted in allot of torque. For comparison a G5 Prime I measured produced about 0.37” of lateral nock travel.
The Helium’s flexing roller guard bends about 0.50” from brace height to full draw, this produces less cam tilt and therefore less bow torque.
I expect to hear many reports about the forgiving nature of this bow.
I am glad to see that the undesirable bow issue of cam tilt and bow torque is now being acknowledged and addressed.
Thanks
Joe Marzullo