shrew brace height concerns?

[jrchambers]

im shooting a 58inch shrew samurai, i draw 29.5 and i know the recomended brace height is 7 to 7.5 but when tuning i get great flight anywhere in there but alot of noise,  when i creep up to 8 inches even she goes silent and arow flight and acuracy is still the same.  I used to measure my brace height to the highest point of my shelf where the arow rests.  and i used to think i had a bh of 7 5/8 but when i realized it was mesured to the deepest part of the riser it was up to 8.  I was kinda wondering if a whole half inch above the recomended could hurt anything.  
    this is a new issue i draw 61 and used to shoot 600 gr arows and never had a noise problem, now i shoot 820 gr, and am happy with the results just not the noise.  anyone else had this happen?

[tradtusker]

sounds strange
what string are you using?

[Lewis Brookshire III]

Are the heavier arrows a stiffer spine? They could be smacking the riser.

[jrchambers]

9 strand d97

[jrchambers]

i used to shoot gt 5575 but now 7595 I spent a good bit of time bare shafting and they fly well.

[Tim Fishell]

A higher brace height will not hurt the bow but you are robbing the bow of some performance.  All Shrew bows come from Ron and Gregg with a 450+ string.  I would as Ron has to me in the past going back to the 450+ string and see what happens.  My guess is she should quiet right down for you.  I have a 58" Samurai as well and it is by far the quietest Shrew I have.

[jrchambers]

i had two 450 strings one broke due to a broken nock the other began to break so i swore them off, I just like the bow to much to risk doing that to it twice.

[jrchambers]

ttt

[Ray Lyon]

JR,
I too am wondering if you have a spine issue? I shoot my Samurai at 7" to deepest part of throat on grip. I'm drawing 29" and use Easton Axis 400's with 200 grain points (standard aluminum insert) and 4 inch parabolic low cut feathers. Total weight is about 560 grains and I'm drawing about 59#.  I use a six strand string from Ron and have had it on the bow for years. I use two rubber cat whiskers for silencers and that's it.  Extremely quiet bow. I know if my nock point or spine is off, the bow will be noisier.