Double Carbon Success

[Wagstaff]

Anyone else experimented with carbon in longbow limbs?  

We're having fun with this one.   After tweaking our limb design to get the most we could out of it, we stepped it up a bit by using carbon in place of glass.  

We built this one on the most SOLID material we could find.  

We started shooting it before final sanding and spray finish, but WOW, its fast and stable.  

62" 48 lbs@28"
492 grain carbon arrow, avg 196 fps
Fingers released


I'm Very proud of the work my son did on this bow, Specifically designed and built for a competitive shooter.  

The  riser is slightly heavier than exotic hardwood, and pleasant to shoot.  We were concerned that such a solid riser might lead to a "buzz" feeling or a "ring" when shot.. No such thing here.. Its fun to shoot this one.!

Better pics after its finished...


 

[Pago]

Exciting can't wait to see more.

[Mike Faith]

Very nice, love the design and obviously it works!!

do y'all have a website?

[kennym]

Jeff, that's kickin butt! Be over 200 with 9gpp and a hooter shooter like Blacky uses!    :eek:

Great job man!

[chackworth3]

Excellent numbers on that one. Nice job

[jess stuart]

That is exceptional!!  What type of carbon did you use?  I am not very familiar with carbon but, understand there is a great difference in different types.  Again great job.

[Trux Turning]

Nice job and a great looking bow and numbers.

[mikkekeswick]

Nice bow  
What difference in stack do you figure compared to the same design in glass?

[Wagstaff]

We picked up 10+fps on this bow. Carbon  definitely adds a little speed and cast.  Part of the gain may be due to the limb geometry, and/or the super rigid riser materials.   We are on a mission to find out how much each contributes..  
 
Your Mileage May Vary

Backing Our longbow with the woven carbon we used at first just wasnt helping that much.  We went to Gordons Uni Carbon, in combination with thin woven bias carbon in the core.  

The CORE laminations are reduced by 15-20% compared with the same stack using glass.   Carbon thickness varies, depending on your target weight. The reduction in core thickness is related to the thickness of your carbon.  

We just laid up the exact same stack on a wood riser, to see how much this extra rigid black riser may be helping, if any...

[PV]

Nice looking bow! Carbon belly?
I had the same results with the woven carbon also. Been using the Gordons uni for many years but have never tried it on the belly of a bow. Heard too many horror stories..

[beachbowhunter]

A friend of mine (goes by Cupcake on TG) does double carbon on all of his longbows. Gordon Uni like yours. No failures to date.

It would be interesting to see the limb profile. How aggressive is it?

[Mad Max]

Nice one all around

[Pheonixarcher]

I've been thinking about trying some carbon.  Do you have any recommendations or tips?

[Crittergetter]

Man you guys just keep pushing the envelop!! Good work and congrats!!!

[BenBow]

Sweet looking! Pictures of braced and full draw please

[Sixby]

I have been using carbon in all of my bows for the last 15 years. I do not recommend using uni on the back although its faster by a teeny bit than a matrix. I have had two bows get splinters on the back with uni carbon so stopped using it quite some time back. Both were longbows. What I use now is uni with a carbon weave in a combination layup and either stabil core or a combination carbon of weave and uni toward the belly in the core. The numbers are outstanding on your bow. Nice job.
God bless and Merry Christmas, steve

[forestdweller]

Nice looking bow and that's very fast for a longbow, the fastest I've heard of yet actually.

One question though, is it true that if a carbon bow fails on you it will splinter a lot more than a glass bow failure?

Happy holidays everyone!

That's what I'm talkin' bout...  Nice to see you max out your limb potential before you used carbon to up the ante... Good job... Would love to see some side profile pics at brace and full draw...  A DFC would be cool to see also if you are into numbers...

[kennym]

We just laid up the exact same stack on a wood riser, to see how much this extra rigid black riser may be helping, if any... [/QB]

Jeff, how did the wood riser fare? I think that riser flex is some loss of performance but no data on it. Thx!, k

[Crooked Stic]

I have used binghams carbon and another bias ply I think the most FPS I ever gained was 3-4. I would think your riser with no give in it probably helps as much as the carbon.