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New project
DC:
New project :) :) Badgers comments about the advantages of a short working limb have intrigued me. I'm thinking about a sinewed, deflexed, static, recurved, molle with wide, short and thin working limbs. I'm a little unsure of the extemes. I have a piece of ERC sapwood that Wizardgoat gave me. It's 62"x 2 1/8" x 1". I'm thinking of splicing the statics on to extend it a bit as I'll lose 2 1/2" spicing in the deflex.
What I'm wondering about is the dimensions of the working limb. It will need some handle because there will be a splice. How long to make the limb compared to the levers? How thin is too thin? I'm after 40#@27". Do you think a 16-18" x 2" sinewed working limb would end up too thin? What are the problems with too thin?
sleek:
Thin is bad. The limbs deform on release making energy transfer inefficient. Thicker is quicker. I have built, and studied quite a bit on short bows and have made some decent ones. To get a thicker limb without increasing draw weight, you need to deflex the fade. I will write a bit about all this soon. I have about 3 typed pages of notes on this very subject that I have taken as I built them.
Woodely:
I have only ever built one wide bow. I think it was 1 5/8" wide at the fades. The wood was perfect, I was barely 10 minutes into tillering and exercising it when it blew up on the tiller stick. Won't build another wide limb bow again, all my laminate bows end up at around 1 7/16" to 1 3/8" wide.
simk:
DC, for comparison, I do my moelles with 13:17 bend/lever ratio. The bending limb is 1 7/8" wide at the fade, is 38 cm long and has maybe 12-15 mm in thickness.
sleek:
--- Quote from: Woodely on March 15, 2019, 01:25:54 pm ---I have only ever built one wide bow. I think it was 1 5/8" wide at the fades. The wood was perfect, I was barely 10 minutes into tillering and exercising it when it blew up on the tiller stick. Won't build another wide limb bow again, all my laminate bows end up at around 1 7/16" to 1 3/8" wide.
--- End quote ---
99 things can cause a bow to blow. To wide aint one.
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