faster material?

[simk]

yeah, experimenting is fun.
I have that customer that professionally works with carbon - he sent me a few cured prepregs and "forced" me to make something out of.
Oh wow, Carbon! That bow sure performs great! That's what I hear from the folks when showing them that bow.
But nope. The Material does not make a bow go any faster. This bow shoots the same as the same bow in glass or yew.
Its not the material, its the design that makes a bow go well - yes, we all knew that before (-;
wraps for saftey - I dont really trust the bond with the carbon and I want to avoid anybody getting hurt.
However - carbon for sure seems an intersing material for bowmaking.
cheers

[B-JS]

If you replace 100% UD Glass with 90/0 Carbon, that contains 50% useless Mass for your Design...
What do you expect?
If you compare, compare things that make Sense.
If you had used 100% UD Carbon, you would have saved some weight in the Limbs and the bow might have been slightly faster.

In a Well build Recurve, the right Carbon Laminate will safe a serious amount of Limb mass.

In a Longbow the benefits May be very little.

But yes, you proved...
Putting just some Carbon in ab Bow, without knowing what you do...
Does Not make any Sense.

[simk]

oh well,..  I wasnt generally speaking, but about the 0.4mm material that I've got and made into simple design. No one talks about the superrecurve. But no worries the ud-material is already on its way for more fun-projects. But in this simple design I do not expect significant improvements with the ud - even tough I have a shooting machine all differences and error in building the bows and taking measurments probably bigger than the differences we are after. talking about this specific simple design. we will see.

[dbeaver]

The Material does not make a bow go any faster. This bow shoots the same as the same bow in glass or yew.
Its not the material, its the design that makes a bow go well - yes, we all knew that before

BJ-S, almost any unlearned archer with a couple extra bucks in the market for a bow will see carbon as an option and desire it for its "performance properties".  I have seen time and time again bowyers examine their making history and determine that there are few places for carbon to make serious changes for a bow design, and the designs the "rely" on carbon to hold them together have been some of the designs that make a name for themselves to blow up.  His comparisons do make sense, they are three identical bow designs with three different sets of material.

"putting some carbon in a bow without knowing what to do".   Research the bowyer a little.

[B-JS]

@dbeaver
No worries, i know him.
We played in the same Sandbox once at fletchers Corner.

@simk
No insult to you.
But 90/0 Carbon (what Lot of bowyers use for cosmetical enhancement) does not make Sense in almost any Kind of Bow.
The strenght you gain is killed by the useless 50% mass of the 90° fibers.

In the Design you tested i would not expect very much difference between pure Wood, Glass and Carbon.
The pretty thick Core dimishes the weight you can safe with the Glass or Carbon.

I absolutely agree on the term: Just adding Carbon is Just marketing.

But using it right, by beeing able to build thinner, narrower limbs or Designs, that won't work without it...
That does make Sense.

[Kirkll]

I've been steering customers away from carbon backed bows for years even though they were interested in it and willing to pay more for it... Once you have your limb design dialed in for best performance, you are going to find minimal increases in performance using carbon.  But.... there are exceptions to the rule if you are building hot rods and using uni carbon belly and back with ultra light core materials, or better yet ultra light very brittle core stock.... But those do not last very long in terms of longevity.

On those straight limbed ASL limb designs, carbon is a total waste of money. But....On a high preload R/D long bow you can see significant gains... But... They are not as durable in hunting conditions. You bang up an edge, and they blow up next time they are drawn or shot. With glass you may lift a splinter... but that can typically be repaired without loss of limb.

In recurve limbs its used mostly for stability, not speed or performance increases. And a 45/45 bias weave is most common. Your limb design is what produces the performance, not the carbon..... Which you just figured out for yourself...  Kirk

[willi]

nice designs  very trad.
how do you do the laminating?

[Crooked Stic]

Yeah the only reason for it on a longbow would be the look for me. The 45/45 twill for stability on a curve and super curve. And agreed design gets performance. You may gain a bit by having less mass weight with carbon.

[Kirkll]

nice designs  very trad.
how do you do the laminating?

Very carefully….

https://m.youtube.com/watch?v=uAMsgze0u7Y&feature=youtu.be