Grains Per Pound...

[Shredd]

I made a bow for a customer and it is 52#...   He is shooting 410gr. arrows with it, which makes it just under 8 GPP...  It is a R/D  bow... It has very good performance and the arrows are coming out of there over 200 fps...  Should I be concerned at these higher speeds and arrow weight?? Should I tell him to go to a heavier arrow weight to prolong the life of the bow??  I would think that at such high speeds there will be more stress on the limbs... What is your feelings or experience on this??

[Mad Max]

You just need to recommend a Standard of 9/10 grains per pound.
Some people drive the speed limit and some people don't.

[Forwardhandle]

I personally don't worry about arrow weight on glass or glass carbon bows , have shot some light arrows out of my bows particularly out of one of my 56lb 64" FHLB I have got some crazy speeds built the bow to shoot heavy arrows but shoots light arrows better go figure ! I think glass bows can take some light dry fire speeds but at 410 grain it's not that light of course it would depend on the design but I think your fine.

[buckeyebowhunter]

Rich, I'd say it's all dependent  on your comfortability on arrow weight with your bows but if you don't set a limit and for whatever reason there is a failure the customer  has every right to blame it on craftsmanship or material failure rather than their approach to taking care of the bow. Just my two cents.

[buckeyebowhunter]

I'd go with Mad Max recommendation.

[Flem]

Speed freak. Tell him to get help

[Crooked Stic]

Tell them no less that 8 GPP. for his safety and your warranty. If hot rod anything it dont last as long and could blow up.

[monterey]

If it blows they will probably insist they followed your guidelines!  :(

[Crooked Stic]

It is kinda hard to prove anything unless you see it in person. all you can hope for is it dont blow in the warranty period.