Carbon Twill order

[Crooked Stic]

On front and belly or just front a glass belly. Let me know how it works out.
I know double carbon guys use 6 ply on the front (twill and uni mix ) and just twill 2 plyon the belly.

[Kirkll]

I used the .015 Twill on the back over stable core on a 30# bow with a glass belly and you could have used it for a crowbar.     It felt like a 65# glass bow in torsional strength.   I did another test using two layers of stable core on the back and it wasnt near as strong as the carbon, but it was very stable... I started using the stable core right under the glass on the back of the limb on 40-50# recurves and that increased the stability quite a bit over running dead center or closer to the belly. Once you get it into the neutral zone in the center it doesn't do much. pretty much a racing stripe.

[OldRawhide42]

Kirk did the twill change your recipe for pounds ??

[Crooked Stic]

My experience using twill just adds to the stack.so how thick the twill is how much core to leave out. Stack is the same. Just twill and no glass may not be enough tho.

[OldRawhide42]

Thanks Stic

[B-JS]

45/45 is for stiffness.
If you want to replace Glass, you need UD.

[OldRawhide42]

Will twill add any preload to a light LB

[Kirkll]

Will twill add any preload to a light LB

Using 45/45 twill on an LB is totally wasted unless it’s just for looks. Uni carbon will add draw weight, and you will need to shorten your stack. But the preload is determined by limb shape, taper rates, and wedge configuration and not to be confused with draw weight.