Limb thickness?

[Jim Davis]

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.

[Badger]

  At 85#  1 3/4 wide is not too wide, no need to reduce it.

[cool_98_555]

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.

[Badger]

 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.

[cool_98_555]

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.

[Jim Davis]

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...

[cool_98_555]

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! 

[PEARL DRUMS]

Hmmmmm . Hopefully this little project learned ya' a thing or two.

[Badger]

  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.

[cool_98_555]

Maybe it just was an exceptional piece of wood?

[Badger]

  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.

[Selfbowman]

Regardless the tiller had to be spot on. Congrats on the build. Arvin

[cool_98_555]

I will try to upload some pics after I shoot it in and I finish it