Main Discussion Area > Bows
New project
bradsmith2010:
rocket science wizadry,,,, I like that,, )P(
DC:
OK the project will continue on but with a change that put's some limits on. I was cleaning up under my bandsaw and found a piece of yew that is 23" long. With a finger joint splice in the handle being 2 1/2" and the 3" "V" for the lever that leaves me about 14" working limb. Pretty short but the Yew was on it's way to the fire pit so I'll save Goats ERC piece for something else. If this breaks, well it will have used up a couple of week of shop time and I won't have to find room for "another bow" ;D ;D Using Simks formula that means about 17" lever, that will be about a 62" bow.
maitus:
Everything about limbs is very well described in Adam Karpowicz book. General rules for hornbow limb dimensions work as well for wooden bows. Suggest to read :). After reading this book, i got 171 f/s out of elm selfbow with 32 grams arrow.
DC:
I wish I could find a printed copy, not fond of Ipads.
Some pictures of the days work. Cutting the glue up apart and splicing the handle. Picture of my finger joint jig. I cut down on the deflex from my usual 11° to about 9° Had company so I didn't get much done.
DC:
Today I fit the recurves "V" joints and glued on a "power lam" which is just a splice reinforcement. Flattened the belly of the handle and made a cover for the belly side of the splice. Then I glued it all up. I'm thinking I will use a Maple backing rather than sinew. I can get Maple and have a limited amount of sinew. I'll save the sinew for the ERC I was originally going to use for this.
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