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Tip string grooves
bassman211:
I just cut string nocks, and a new string for a 50 inch sinew backed hickory bow which shoots about the same velocity as yours before the V string grooves. Left the bow as is. Tomorrow I will shoot both strings on the bow through a chrony, and compare results. If I can gain 20 fps, or even 10 fps I will be elated. IT is worthe a shot. No pun intended. Thanks
bassman211:
Saturday 8 fifteen AM 38 degrees. Pulling the bow as consistent as I could to 25 inches of draw the original looped string shot 135 fps through the chrony for an average of 10 shots. With the V nocks the bow shot through the chrony at 150 fps average for 10 shots. Even though it is not a scientific test it is clear to me that there was a significant improvement with the end results in terms of velocity. I will be trying it on other bows in the future. The tests were done with a 10 strand B55 string. Thanks for the V nock theory. :OK Bob
mmattockx:
--- Quote from: bassman211 on October 12, 2024, 11:10:03 am ---Saturday 8 fifteen AM 38 degrees. Pulling the bow as consistent as I could to 25 inches of draw the original looped string shot 135 fps through the chrony for an average of 10 shots. With the V nocks the bow shot through the chrony at 150 fps average for 10 shots.
--- End quote ---
That's impressive. Same brace height on both setups? Pics of the bow and nock details?
Mark
bassman211:
Same type of 10 strand B55 string, and the same brace on both strings. Sorry I don't know how to post pics. My wife did all that, but now in a home with dementia. MM give it a shot at one of your bows that you use to experiment. I have no explanation for the end results, but that was my honest experience with the test. I have some string follow bows that I will be testing in the future ,and post results.
Zugul:
My opinion about this significant increase is that now the limbs are tecnically longer but should move at the same speed as before (since they have pretty much the same mass as before) so the tips have to move a longer distance then before in the same time, so they must move faster. This means the string and the arrow have to move faster too! correct me if I'm wrong but to me this seems the only logical explaination.
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