Carbon/glass belly ???

[Dmaxshawn]

I have my stack thickness all figured out and am just about ready to glue it up.  I'm going to try a carbon back and carbon belly A-boo core bow and one with foam cores.  My question on layup.  Do I put the belly glass under the belly carbon  or do I put the glass on top of the belly carbon ?   I've already sanded down my belly glass to 0.020.  

Thanks for any input.  

Shawn

[Vamp]

You will be using carbon on the back and belly of the bow. If you do, BE CAREFUL!!!! The poundage will increase by like 20# or more because they fight each other. If you are building a bow at 50# make sure you do your calculations for a 25 -30# bow with double carbon an even then its a crap shoot.

[CardboardDuck]

I'm pretty sure the carbon has to go under the glass.

[tenbrook]

It really just depends.

Some put it under the glass some with no glass.  I think the most popular way is to put it on the back only getting as close to the top of the stack as possible.  

Core/Carbon/Veneer/Glass=good
Core/Carbon/Glass=better
Core/Carbon=best

Hope this helps.  If it were me I would leave the carbon off the belly side.

Good luck!

Tenbrook

BTW the boys over at POA really know their carbon.  I would try posting over there.

[Dmaxshawn]

Thanks all. I've reduced my stack by what dale stahl told me. He helped a bunch in this project.   It will back a carbon backed bow for still undecided on the belly.

Thanks. Shawn

[kennym]

Shawn, I've never messed  with carbon, but read a lot about it (and stayed in a Holiday Inn more'n once) and most folks think carbon on belly also is more likely to blow. Shears the belly core lam.

The back on outside gives most benefit. Just from what I've read.....

[Crooked Stic]

You benifit with carbon will be on the back. The more stuff you put over the carbon the less it will do for the performance. I think in reality 3-4 FPS gain. You will feel after the shoot noticable less vibration. I am not even sure carbon is worth the$ unless you are just trying to gain speed where every little bit helps. Design has more to do with performance then the carbon can add the few more FPS.

[Dmaxshawn]

Thanks guys

[Shaun]

I built one carbon bow and put it on the back with no glass and used glass on the belly. Worked fine. Carbon can be damaged by impact, so needs to be babied.

[Bob Sarrels]

Get rid of the carbon on the belly Shawn.  Will do nothing but give you fits.  Adds zero to the performance and has really nasty compression properties.  jmo.

[Jason Kendall]

What Bob said.

Also, when OL started making the ACS he told me he used a thin .020 layer of glass over the carbon. I would, the gordans carbon isn't very tough.

[Dan Bonner]

Carbon belly bows are not practical unless you just want to light up a chrono for a few shots. I have built several. They eventually sheer the core wood or force you to use a heavy core like Osage that robs the weight benefit of the carbon. I built a double carbon bow in '07 that is still shooting well but I thinned a glass lam to 10 thousandths and used it as a skin over the belly carbon. Don't know if performs better than a straight glass belly carbon back rig would but it's the only double carbon that hasn't blown.

Bonner

[Dan Bonner]

Carbon belly bows are not practical unless you just want to light up a chrono for a few shots. I have built several. They eventually sheer the core wood or force you to use a heavy core like Osage that robs the weight benefit of the carbon. I built a double carbon bow in '07 that is still shooting well but I thinned a glass lam to 10 thousandths and used it as a skin over the belly carbon. Don't know if performs better than a straight glass belly carbon back rig would but it's the only double carbon that hasn't blown.

Bonner

[Dmaxshawn]

Thanks all this is my week out in Nebraska. When I get home ill get back to eating dust

[kennym]

Hope you got a biggun down!!  

[7 Lakes]

Do not put the carbon on the belly, it doesn't compress.  You will hear a crunching sound and notice one of the limbs whipping back at you at excessive speed.  

Carbon's best feature is it makes a good replacement for heavy glass.  Don't count on a bunch of extra speed.

[chackworth3]

I recently dabbled with a carbon core in one of my bows.  Used actionwood veneers and glass and shot for poundage in the mid 40's at my draw (25.5) so I built for about 40# @ 28".  Came out at roughly 55 @ 28 and so far shoots awesome.  No complaints at all yet. As far as performance, it shoots a little faster than the actionboo I normaly use and is about the same as far as quietness and vibration, can't really tell much of a difference.  It is definently more pricy than your normal cores