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Main Boards => The Shooters FORM Board => Topic started by: razorsharptokill on August 13, 2011, 09:37:00 PM

Title: New 5575 GT's fishtailing with 3 under
Post by: razorsharptokill on August 13, 2011, 09:37:00 PM
Just built some GT 5575s with 100 grains behind the insert, 28 3/4" long, shooting 200 grain points. Bow is 56@ 28" BW MAII. Bare shafts hit where my fletched shafts do. I have moved the nock set from 3/8 high to square and it does not make a difference. I also notice a click upon release. Bow is now suddenly loud.

I have been shooting 3 under for a while now after shooting split for YEARS. Would like to keep shooting that way.

When I shoot split finger with these arrows shoot like bullets.

Any ideas?
Title: Re: New 5575 GT's fishtailing with 3 under
Post by: Mike Bolin on August 13, 2011, 09:47:00 PM
I would try moving the nock point up, say to 5/8" above center.....maybe even more. When I played around with 3 under I started at a 1/2" above and moved up from there. Worth a try! Good Luck-Mike
Title: Re: New 5575 GT's fishtailing with 3 under
Post by: mrjsl on August 13, 2011, 10:00:00 PM
I agree - move nocking point up.
Title: Re: New 5575 GT's fishtailing with 3 under
Post by: pumatrax on August 13, 2011, 10:00:00 PM
I agree with Mike...what kind of fletching are you using ? helical ?
Title: Re: New 5575 GT's fishtailing with 3 under
Post by: razorsharptokill on August 13, 2011, 10:06:00 PM
4" RH shield
Title: Re: New 5575 GT's fishtailing with 3 under
Post by: pumatrax on August 13, 2011, 10:28:00 PM
are they straight or helical....
Title: Re: New 5575 GT's fishtailing with 3 under
Post by: McDave on August 13, 2011, 10:28:00 PM
Aside from your bare shafts hitting where your fletched shafts hit, how do they fly?  Straight, nock left, nock high?  I agree with moving the nock point up, but suspect that isn't the whole answer.  From my own experience, 300 grains up front would make for too weak of a spine under the conditions you specify.  FWIW, my nock points for 3 under vary from 5/8" above square to 7/8" above square, with the arrow being nocked under the string nock.
Title: Re: New 5575 GT's fishtailing with 3 under
Post by: USN_Sam1385 on August 14, 2011, 01:08:00 AM
My bow is 56# @ 28, same as urs, and I shoot GT 5575's with RH parabolic.

I have a 100 grain brass insert up front, and 170 gr. broad heads.

Total arrow weight is right around 560 grains, and makes for an arrow that is almost exactly 10 gpp.

I imagine that you would have the same success as I have had if you use that set up.
Title: Re: New 5575 GT's fishtailing with 3 under
Post by: Pete McMiller on August 14, 2011, 02:38:00 PM
Two things.  First, move your nocking point up to 5/8 to 3/4.  Second, and this may or may not be part of the problem, heal the bow a bit more.  I experienced the same symptoms early this summer and both were part of my problem.  My bow, Big River R/D likes to be healed when shot and clicks and kicks the arrow nock high left when either the nocking point is too low or I don't heal the bow properly.  I also increased my brace height by 1/4 to 1/2.  I now shoot bullets
Title: Re: New 5575 GT's fishtailing with 3 under
Post by: USN_Sam1385 on August 15, 2011, 09:56:00 AM
Quote
Originally posted by Pete McMiller:
Two things.  First, move your nocking point up to 5/8 to 3/4.  Second, and this may or may not be part of the problem, heal the bow a bit more.  I experienced the same symptoms early this summer and both were part of my problem.  My bow, Big River R/D likes to be healed when shot and clicks and kicks the arrow nock high left when either the nocking point is too low or I don't heal the bow properly.  I also increased my brace height by 1/4 to 1/2.  I now shoot bullets
What does that mean? To heal a bow?? Forgive my ignorance. Thanks
Title: Re: New 5575 GT's fishtailing with 3 under
Post by: Pete McMiller on August 15, 2011, 10:54:00 AM
Healing is having more pressure on the heal of your hand when holding the bow.  NOT gripping but letting the bow grip sit in/on your lifeline and relaxing your hand so most of the pressure is on the bottom with almost no hand muscles in play.  Understand that the muscles in the hand can cause significant variability in grip pressure and therefore torque and torque causes bad arrow flight.  In my case, when I don't have enough heal my groups are erratic and more likely high left.  Try it out and see what you think.
Title: Re: New 5575 GT's fishtailing with 3 under
Post by: razorsharptokill on August 15, 2011, 11:09:00 AM
RH helical fletch.  My bare shafts hit nock high and left.

I have an old GT5575 XT that is just under 28" and has 150 grains of weight, 200gr point, 3-4" parabolic. It flies really well and does not click.

I have noticed some grip issues too. I will work on that.
Title: Re: New 5575 GT's fishtailing with 3 under
Post by: razorsharptokill on August 16, 2011, 06:44:00 PM
Ok, really worked on my form and raised my nock point. I also added another below the nock. My flight really improved.
Title: Re: New 5575 GT's fishtailing with 3 under
Post by: wtpops on August 16, 2011, 11:06:00 PM
With 3 under i start my nock point at 3/4 or 7/8 and come down untill its tuned in. I wil most likly end up just above 5/8 or right at 5/8
Title: Re: New 5575 GT's fishtailing with 3 under
Post by: Kentucky Jeff on August 17, 2011, 12:04:00 AM
Had similar problems and figured out my release was the culprit.  I watched the moebow "release tips" video and really paid attention to the part about relaxing your forearm and hand and letting the string straighten the hand and arm as I draw it back.  Made a HUGE difference and I got rid of the slap and vertical kick I was getting off the shelf that indicated  high nock but in fact was bad form.  I found I was putting pressure on the nock actually bowing the arrow down as I drew it back...

Relax...relax...relax...that goes for the string hand/arm and bow hand too!