Tuning carbon arrows

[matt61]

Was mucking around yesterday with an Easton traditional 500 spine carbon arrow from 3Rivers.
The bare shaft was 31" long With an insert and a 125grn tip to start with, after shooting it and
then cutting off 6mm quite a few times I got it flying pretty good at 20 mtrs using the Easton
uni-nock. I then glue in traditional nock adapter and glued a Marco nock to the adapter and
shot it again and it shot crap After a few shots more I pulled the nock and adapter
out and put the Easton uni-nock back in,and it shot beautiful. The brain says weigh the bits,
the uni-nock weighs 12grns and the Marco nock and adapter weigh 20grns. I was amazed
that 8grns made such a difference and made the arrow fly indicating under spined , 8grns is
the weight of a couple of 4" feathers. Has anyone else noticed the same thing.
Matt

[hazard]

Hey Matt
Yes! I put 30mm of alu shaft on the point and 10mm of shaft on the knock end to reinforce the ends and it made a lot of difference. I had to shorten the shafe nearly 1/2 an inch to compensate.

Hazard

[flyne]

Hey Matt I had the same thing happen years ago shooting compound and It ended up being one of the nocks was tighter fit on the string then the other and I just files it out and was all good
Flyne