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Author Topic: Limb thickness?  (Read 4120 times)

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Offline Jim Davis

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Re: Limb thickness?
« Reply #15 on: February 27, 2018, 07:38:14 pm »
I make my Osage pyramid bows 66"" ntn. about 1.5" wide at the fades and they are usually a touch over 1/2" in thickness. I have yet to have one make more than 50#. They take maybe a 1/2" of set. I don't reflex them or "flip" the tips.
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Jim Davis

Kentucky--formerly Maine

Offline Badger

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Re: Limb thickness?
« Reply #16 on: February 27, 2018, 08:18:24 pm »
  At 85#  1 3/4 wide is not too wide, no need to reduce it.
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cool_98_555

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Re: Limb thickness?
« Reply #17 on: March 05, 2018, 08:11:31 am »
Well, I did it!  I took down the back to the next growth ring so that the limbs were 1/2" thick, still 1 1/4" wide, and I ended up with 83# at 30" of draw.  Osage really is an amazing wood!  I'm covered in yellow dust, but it's worth it.  I didn't think I would make my goal with limbs that thick at that narrow 1 1/4" wide mark, but it worked out!  It did take around 1" of set, but i'm ok with that.  I'll just do 1 1/2" wide on my next bow.  Thanks for your help guys.
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Offline Badger

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Re: Limb thickness?
« Reply #18 on: March 05, 2018, 08:36:11 am »
 Is the 1" of set after resting or just unbraced? That sounds like some good wood you have there. Do you know what the physical mass of the bow is? 1" of set is not bad at all.
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cool_98_555

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Re: Limb thickness?
« Reply #19 on: March 05, 2018, 08:41:41 am »
Badger,

I didn't measure the mass of the bow, so i'm not sure, but the 1" of set is after resting for awhile.  Just after brace it is around 1.5-1.75 of set.  I had really good rings on this stave.
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Offline Jim Davis

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Re: Limb thickness?
« Reply #20 on: March 05, 2018, 08:51:39 am »
Either my scale is way off or my wood is no good or???? At more than half inch thick and 1-1/2" wide I only get 40-45# with a 66" ntn Osage pyramid. Can't fathom getting twice that weight from a narrower limb... (A)
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Jim Davis

Kentucky--formerly Maine

cool_98_555

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Re: Limb thickness?
« Reply #21 on: March 05, 2018, 08:55:23 am »
I know! I'm telling you though, it is 83# at 30" and I started tillering with 1/2" thick parallel and 1 1/4" wide limbs.  I taper half way out the limb to the tips.  Must have been the stave?  I'm puzzled too, believe me!  :BB
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Offline PEARL DRUMS

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Re: Limb thickness?
« Reply #22 on: March 05, 2018, 09:05:26 am »
Hmmmmm :) . Hopefully this little project learned ya' a thing or two.
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Only when the last tree has died and the last river has been poisoned and the last fish has been caught will we realize we cannot eat money.

Offline Badger

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Re: Limb thickness?
« Reply #23 on: March 05, 2018, 09:43:31 am »
  I have an 80#@28 sitting on my lap right now that is the same length 66" long. , .6 thicknes, 3" reflex. Took less than 1/2" set and is about 1 5/8 inch wide. Mine has a lot of mass at 28oz.
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cool_98_555

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Re: Limb thickness?
« Reply #24 on: March 05, 2018, 09:47:42 am »
Maybe it just was an exceptional piece of wood?
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Offline Badger

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Re: Limb thickness?
« Reply #25 on: March 05, 2018, 10:44:52 am »
  If you get a chance could you post a drawn profile of the bow. It is a bit thinner than I would expect. Some things can affect draw weight such as if the outer limbs are coming around too much and it starts to stack. But I have seen 1/2" make that weight before just not common.
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Offline Selfbowman

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Re: Limb thickness?
« Reply #26 on: March 05, 2018, 10:57:03 am »
Regardless the tiller had to be spot on. Congrats on the build. Arvin
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Well I'll say!!  Osage is king!!

cool_98_555

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Re: Limb thickness?
« Reply #27 on: March 05, 2018, 12:02:16 pm »
I will try to upload some pics after I shoot it in and I finish it
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