Bamboo belly - predicting draw weight

PAZUZU · Post by **PAZUZU** » Fri Dec 06, 2013 9:38 pm

Hello!
this is a maple core I did 3-4 years ago. I want to finish it but I wish I use bamboo instead of horn. I aim light draw weight - no more than 35 lbs. My question is: what should be approximately the thickness of the individual components (bamboo / maple / sinews)? core is 38 mm wide.

fusizoli · Post by **fusizoli** » Sat Dec 07, 2013 1:24 pm

James Parker (Robustus) is a pro in bamboo bowyery.

He use heat treated boo on the belly side.

Think the same size like the horn would be, about 5 mm.
I would use just two layer sinew and thin core if like low draw weight.

jkekoni · Post by **jkekoni** » Tue Dec 17, 2013 9:52 am

It looks like you can use 2 piece of bamboo, so that no nodes will be in bending parts. At least that is what I would try to... providing you can your hands on such bamboo.

Bamboo outer layer is a LOT of stiffer that horn.

Unfortunately I cannot help you with measurements.

PAZUZU · Post by **PAZUZU** » Wed Dec 18, 2013 9:22 pm

I will use this bamboo. segments are 42 cm long. I think that's enough

http://www.mehr-als-werkzeug.de/product ... -40-mm.htm

Pat Menzies · Post by **Pat Menzies** » Wed Dec 18, 2013 9:27 pm

Make sure you read Dale Yessak's article on his experience building this type of bow.

PAZUZU · Post by **PAZUZU** » Wed Dec 18, 2013 9:58 pm

for my regret I have not heard about this article

Markus · Post by **Markus** » Wed Dec 18, 2013 10:23 pm

Could it be this? Markus.
http://www.atarn.org/FAQ/bamboo_composite.htm

Pat Menzies · Post by **Pat Menzies** » Thu Dec 19, 2013 12:00 am

Not surprisingly, that is the article.

PAZUZU · Post by **PAZUZU** » Mon Dec 08, 2014 9:06 pm

and so ... I did experience with bamboo belly - unfortunately unsuccessful. before gluing, one bamboo strip split lengthwise. eventually made horn belly. also change siyahs. joined with the new V splice. so it seems the bow after the third layer sinews.