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Main Boards => The Bowyer's Bench => Topic started by: Zradix on February 10, 2011, 11:46:00 AM

Title: over backing a lam bow?
Post by: Zradix on February 10, 2011, 11:46:00 AM
Hi,

I hear about overpowering the belly by using too thick of backing.

Would using a .03 glass+.02 carbon back (carbon under glass) back with say a .04 glass belly be a problem? using action boo as a core.

What about the same back with a .02 glass belly for instance.

I see wood backed with glass bows with no belly lam.

I guess I don't understand how you can overpower the belly...or what happens when you do.

I'd really appreciate some help understanding this.

Thanks
  :thumbsup:
Title: Re: over backing a lam bow?
Post by: JamesV on February 10, 2011, 12:55:00 PM
Glass is stronger in compression than tension. I would go .040 on the belly glass .030 on the back without carbon. I don't what effect carbon would have in the stack thickness but it will be more than glass of the same thickness.

James................
Title: Re: over backing a lam bow?
Post by: Zradix on February 10, 2011, 12:57:00 PM
Do things crack or break if the back or belly is stronger than the other?
Title: Re: over backing a lam bow?
Post by: 7 Lakes on February 10, 2011, 03:11:00 PM
Generally speaking the back cracks / breaks with too much tension or the belly crushes with too much compression.  

Glass can stand an awful lot of tension or compression.  It's not idiot proof but close to it.
Title: Re: over backing a lam bow?
Post by: Zradix on February 10, 2011, 04:16:00 PM
So you're saying I have a chance.....   :knothead:
Title: Re: over backing a lam bow?
Post by: Zradix on February 10, 2011, 04:24:00 PM
7 lakes...
Nice looking bows on your site....bookmarked.