Stabili-kore?

[veyonyx]

Howdy,
I'm building a low weight bow next week and wanted to see if anyone has used Stabili-kore?  I see it on 3rivers and wonder if the performance benefit is worth adding the extra few pounds of draw weight.  Anyone have experience with it?
My 64" R/D longbow build is as follows (back to belly):
0.043 clear glass
0.06 parallel actionwood lam
actionwood riser
0.10 tapered (0.002/in) actionwood lam
0.10 tapered (0.002/in) actionwood lam
0.043 clear glass

0.346" butt thickness should give around 40lbs. Don't want to exceed 45. Any other suggestions/comments are welcome.
Thanks and merry Christmas

[Pago]

I use stabil-kore and can't imagine I will build a bow without it.  Due to a layup accident I ended up cutting a recurve limb down to 1" wide (long story), anyway that limb has zero stability issues.  I build my recurves 1.5" wide and have had zero stability issues, rock solid.  There are several others who use it hopefully they will chime in.

[Sixby]

Agree with Pago. Would not build a bow without it except for a double or triple carbon.

God bless, Steve

[veyonyx]

Thank you both for your quick response.  
As for placement, would you place it on the back side of the riser but under the outer lams?  
Also, how much additional draw weight would you guess a 0.015" stabili-kore strip adds to a typical R/D design?

[mwosborn]

Watching this one.

[Wagstaff]

Stabil-Kore is good stuff.

Simply Put, for your longbow, go with it at the center of your core lam stack.

Can't really say exactly what the draw weight effect will be in your own bow design..
In our 64" R/D LB", The Rate or Change is 1# / .0016-.002
Yours may vary from that, but its a rule of thumb that you can start from..
Good Luck with your Bow Build.!

[Sixby]

Added weight over standard core is neglible, However for a .015 fiberglass , carbon core the added stability is outstanding. Especially torsionally . I place it to the belly side next to the belly veneer. The closer to the belly the more benefit you get stability wise.
God bless, Steve

[Pago]

Originally posted by veyonyx:
Thank you both for your quick response.  
As for placement, would you place it on the back side of the riser but under the outer lams?  
Also, how much additional draw weight would you guess a 0.015" stabili-kore strip adds to a typical R/D design?

center of the stack, on a one piece I run it on the back against the riser.

[monterey]

Jeff, do you account for the additional draw weight due to adding thickness to the stack or is it increasing weight with the same stack but due only to the material?

Steve, what do you think is going on to increase stability under the belly glass as opposed to center of the stack.

Not trying to stir the pot, just don't have much understanding of the effect of carbon in the limb.

[Mad Max]

Originally posted by Sixby:
Added weight over standard core is neglible, However for a .015 fiberglass , carbon core the added stability is outstanding. Especially torsionally . I place it to the belly side next to the belly veneer. The closer to the belly the more benefit you get stability wise.
God bless, Steve

I use Binghams uni-weft glass .030 in the center, no stability problems.
what kind of carbon core , and where to get it sixby?

[Sixby]

My personal experience is that I get more stability in radical large hook recurves using stabil core which is a combination of S glass and carbon fibers, next to my last center core and to the belly side of the bow. Between it and the belly glass would be a thin veneer, Usually .012 to .015 depending on the wood. I just take .015 out of the stack and usually hit close to my target weight.
As to UniWeft I have used a lot of it and what I have found is that I get the same of not more benefit from StabilCor plus its less than half the physical weight of Uni-Weft.

I have also placed the Stabil core dead center in the core and still do in some applications , depends on depth of stack and amount of laminations. My finding is that in longbows it is not nearly as important as it is in recurves as to placement. Still , If I get more stability closer to the belly in a rad recurve I can probably deduct that there is more stability with that placement with a D and R. In a straight longbow I doubt it makes any difference and the basic plus would be the light weight of the product.

God bless, Steve

[Walt Francis]

Mark,

The stabil-kore is available from Kustom King, I'm not sure if it is available from other vendors..

[Mad Max]

Thanks Sixby

Walt- 3rivers has it too. Thanks

I always dead end my uni-weft at the start of the static tip wedge