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Author Topic: Bow goes Kaboom!  (Read 5725 times)

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Offline Gordon

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Bow goes Kaboom!
« on: November 29, 2009, 10:10:43 pm »
Here is the result of my 4th attempt at a high poundage bow for a buddy. I had it to 80# @ 28” and thought I had it made. Then I sanded it a little, put it on the tree, worked it to 29” and KABOOM! I guess I just don’t have the skill yet to pull this off. So, I’ll take one of my nice yew staves and make him a war bow – I should be able to do that. Here are some pictures of the deceased for your entertainment.






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Gordon

radius

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Re: Bow goes Kaboom!
« Reply #1 on: November 29, 2009, 10:21:24 pm »
happens to everybody

how long are you making these high pound bows?  I eked about 85 @ 30" out of a 72" yew stave a few months ago.  It was crawling with great big knots, too. 

I can't wait to see what kinda warbow you turn out! 
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Offline Timo

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Re: Bow goes Kaboom!
« Reply #2 on: November 29, 2009, 10:31:46 pm »
Every bow I ever built with bloodwood looked like that Gordon.  :'(Was perty though. ;)
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radius

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Re: Bow goes Kaboom!
« Reply #3 on: November 29, 2009, 10:33:58 pm »
i wouldn't have thought the core wood was the decider?
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Offline Okie

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Re: Bow goes Kaboom!
« Reply #4 on: November 29, 2009, 10:58:20 pm »
Sorry to hear that Gordon. Hope you're not running down the same road I've been on lately. It is fun to try and push the limits though, ain't it? Keep trying I'm sure you , if anybody, can pull this off.
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Offline George Tsoukalas

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Re: Bow goes Kaboom!
« Reply #5 on: November 29, 2009, 11:08:14 pm »
I just broke 2 character staves within a week, Gordon. That's the way it goes. Like Jawge says,  If you ain't breakin' you ain't makin'. Jawge
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Offline Gordon

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Re: Bow goes Kaboom!
« Reply #6 on: November 29, 2009, 11:16:32 pm »
I wouldn't think the core would cause a break like this, but who knows.

I agree Jawge. It's been a while since I had one come apart like this. I was due...
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Gordon

Offline bcbull

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Re: Bow goes Kaboom!
« Reply #7 on: November 29, 2009, 11:24:15 pm »
GORDON  IT HAPPENS TO ALL OF US HAHA  I LOOKED AT PIC S AGAIN 3 TIMES I THINK UR BOO  IS THE CAUSE  BROCK
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Offline Gordon

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Re: Bow goes Kaboom!
« Reply #8 on: November 29, 2009, 11:53:54 pm »
I agree, I think the bamboo failed.
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Gordon

Offline M-P

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Re: Bow goes Kaboom!
« Reply #9 on: November 29, 2009, 11:55:37 pm »
Hi,  It sure looks like a tension failure o me.   Ron
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Offline Gordon

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Re: Bow goes Kaboom!
« Reply #10 on: November 30, 2009, 01:34:27 am »
I looked at the break more closely and noticed that it began at the spot where the powerlam feathers into the core. I'm guessing I didn't get a perfect fit between the backing, powerlam, and core and it failed under stress.
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Gordon

Offline medicinewheel

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Re: Bow goes Kaboom!
« Reply #11 on: November 30, 2009, 01:47:36 am »
Gordon, too bad... - Would have been another great bow!
I think it looks like bamboo failure; maybe not try enough!?
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Frank from Germany...

Offline deerhunter97370

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Re: Bow goes Kaboom!
« Reply #12 on: November 30, 2009, 04:17:02 am »
Atleast we know that your next one will be close to perfect. Joel
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Offline 65x55 swedis

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Re: Bow goes Kaboom!
« Reply #13 on: November 30, 2009, 04:25:53 am »
i think it was a combonation of the bambo failing and grain run off. but i am not very good so. i think this would have been a beutiful bow.
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Offline acker

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Re: Bow goes Kaboom!
« Reply #14 on: November 30, 2009, 06:22:46 am »
HM, an interesting break.
I do work allot with bloodwood and Bamboo, but I never had a failare on the bamboo backing.

Look at the bamboo  powerfibres , they must be very close to each other, the bamboo might be not good enough. I use Moso bamboo.
I would change the core wood with the belly wood , bloodwood is much better under compression than ipe.
It might even be an idea to use a lighter core wood like maple for example.
The bow will be a bit wider than and the backing has more area to work.
acker
 
« Last Edit: November 30, 2009, 06:27:19 am by acker »
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