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Arvins 62" osage design

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willie:
one way to account for the crown in the stave is to compare similar succesful bows as modeled in the program.

As the crown becomes less of the thickness of the limb, as one progresses out the limb,
a slight taper in thickness reduction is called for.  about .01 for every 2 inches out to 24" from center.

a similar increase in thickness from 24" out to the tip would accomplish the stiffnees called for in the outer limbs.

for example, for a limb that would most likely come in heavier than 50#, but might be a thickness profile to work from as one reduces according to the draw curve posted above...


0   2.00
2   2.00
2.5   1.62
4   0.68
5   0.58
6   0.57
8   0.56
10   0.54
12   0.53
14   0.52
16   0.51
18   0.50
20   0.49
22   0.48
24   0.47
26   0.48
28   0.50
30   0.52
31   0.53

once the profile is established as like the numbers above, one would want to remove wood evenyl throughout the full length of the limb in order to keep the relative thickness profile the same.

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