Author Topic: Recurve Question  (Read 6292 times)

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Offline Don W

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Re: Recurve Question
« Reply #30 on: July 04, 2021, 10:28:50 am »
Can someone tell me how much more a recurved tip would be stressed at full draw, compared to a straight tip?

Steaming or boiling wood weakens it a bit plus the limb is stressed more with recurves then there's the angle of the string focusing more stress on the recurve

Thanks. That's the kind of answer I like, instead of a math or physics formula I have no way of following. But I would accept such formula if the provider has enough credentials. I still prefer to have the "ordinary language interpretation" of such a formula. And that should be comprehensible to average people. Thanks in advance.

It is intuitive for the limb to be more stressed by a recurved tip. However it is not that intuitive for me how the recurved tip itself is more stress than the straight tip. Am I having a senile moment?

I would think that the stress would be equal (within reason) to the length of move, but I have found my reason doesn't always apply.

In other words, if a recurve moves 4", it would be the same stress as if the straight limb moved 4". But since a recurve changes the angle of the string, it changes the leverage, so I would think it travels less. If it's a stiff tip, the travel would less for that section.
Don

Offline scp

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Re: Recurve Question
« Reply #31 on: July 04, 2021, 11:56:58 am »
I was wondering why boiled or steamed recurve tips would be pulled out, when there is so little stress at the straight tips as to to allow them to be pencil thin. If that's simply because the tips are way in front of the straight bow back line, does that mean the tips of a reflexed bow should be as thick as the static recurve tips?

Offline Oldvol

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Re: Recurve Question
« Reply #32 on: July 05, 2021, 01:57:40 pm »
Bends are completed (about 45 degrees) and look good. Repaired tip looks good. Currently bending overlays.

Recurving the tips and heat treating the belly completely changed the character of the wood. The bow is much, much stiffer than before. Previous tillering was a waste of time. Question: when I begin retillering do I scrape all the way to the end of the tips or just to the beginning of the bend?

Offline Oldvol

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Offline Oldvol

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Re: Recurve Question
« Reply #34 on: July 06, 2021, 07:12:15 pm »
/Users/jerrydraper/Downloads/20210706afac6cfc35afa409f2abef6f09e788e303e0ee1d13fb480289d3643de74f3e0d/Users/jerrydraper/Downloads/20210706afac6cfc35afa409f2abef6f09e788e303e0ee1d13fb480289d3643de74f3e0d

Offline Oldvol

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Re: Recurve Question
« Reply #35 on: July 06, 2021, 07:14:03 pm »
Trying to post pictures using Flickr. Haven't figured it out yet.