Does Brace Height affect Nock high arrow flight?

[Grayseas]

My son is getting extreme nock high arrow flight. I have adjusted the the nocking point, from one extreme to the other and every thing in between. I thought may be it was how he was shooting, so I shot his bow with the same nock high results.

The bow is 25# @24"  48" bow, existing brace height 7".

We have shot both the carbon arrows with vanes, that came with the bow, and some wood arrows with feather (Bullet holes out of my other sons 26# bow.) both arrow are nock high (min 7" high).

Any help would be appreciated.

[Arwin]

Wouldn't hurt to try a higher brace and see.      
 What kind of rest are you using on the shelf? You might have some contact with the feathers. I like to have a gap between the rest on the shelf and the riser for the feathers to pass through.
 Vanes will certainly make for bad flight when shooting off the shelf.
 Also what spine arrows are you shooting?

[xtrema312]

7" nock high in paper, visual flight or in the target?

[George D. Stout]

You are shooting carbon arrows with vanes from a 25#@24" draw bow.   My guess is those things are doing pirouettes off that bow.      :D  

You probably need some 1416/1516 aluminum or some 1/4" wood arrows to get decent flight.  I would go to the nearest craft shop and get some 1/4" dowells and start there.  I don't think a change of brace height will do anything until you get a semblance of spine for that little feller 8^).

[30coupe]

Darn, George, you beat me to it! It is really hard to find arrows that are not too stiff for a 25# bow. On the other hand, you have a 26# bow too. Have you shot the arrows that work from that one in the 25#? If so, are both bows being drawn to the same length? It is also very possible that the 25# marking is an estimate. On a bow scale, that bow could be a 20# bow. Lots of variables, but one thing that is pretty sure is what George already mentioned.

[Grayseas]

Originally posted by xtrema312:
7" nock high in paper, visual flight or in the target?

Paper

[xtrema312]

Are you shooting at about 6' from the paper?  Is it only a high tare and not a sideways tare or combo tare?  Is the same shooter, who is getting bullet holes with one bow shooting the other bow also to eliminate shooter issues?

I would not be surprised to see that as a sideways tare on a really over stiff arrow because it is bouncing hard off the riser.  I have a kids bow my kids are just starting to shoot with those kids fiberglass arrows.  They are over stiff so I need different arrows, but it is really a light bow and they are just learning the very early basics.  We get a lot of tail left on them, but not that much high tail.  I am surprised to see that as a high tare that can't be tuned to less than 7" with some kind of nock setting.  I guess I don't understand why it would do that on an over stiff shaft.  

If the bows are close to the same center cut and weight with one shooting one of your arrows great, I can't see why arrow spine would cause such a drastic vertical tare outside of shelf contact or way too high a nock setting.  Even with some bow to bow variables bullet holes to a 7" tare is extreme, but I don't have a lot of bow tuning experience at those light of weights.  I should in the next year or two.

I have a little tail high problem shooting off a shelf.  I think it is the way I grip or release the string.  I can't ever get a dead flat bare shaft or nock low.  I can get real close.  I also shoot high FOC and I think that is part of it.

[Gapmaster]

Put a string nock on the string above and below the arrow nock. It's possile the arrow is sliding down the string on the shot and bouncing off the shelf.  

[dick sable]

Great point George.  The curmudgeon has done it again!    

[xtrema312]

Originally posted by Gapmaster:
Put a string nock on the string above and below the arrow nock. It's possile the arrow is sliding down the string on the shot and bouncing off the shelf.    

This could be a real issue.  How is the nock fit on the two different bow strings?  If the problem bows has a smaller string and the nock snaps on, but has a lot of play when on on the string it will slip around.

[Grayseas]

It is a left handed bow, Nock right, nock High tear, the nock high is  approx 7", the nock right tear is approx., 3".  

I will try the nock below the arrow and see if that helps.

[xtrema312]

That needs to be a nock above and below not "the nock below".  The right tear could be weak or so stiff you are getting a riser bounce off. Change point weight to a heaiver point to see what happens with the right tear.

[lpcjon2]

Whats the point weight on the arrows?