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Author Topic: Shortening limbs formula ?  (Read 2642 times)

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Offline NOMADIC PIRATE

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Shortening limbs formula ?
« on: October 23, 2015, 06:46:28 pm »
Been out of this for sometime and forgot several things  :'( :'(

I wanna shorten the limbs on my new Osage flatbow to gain some weight, ...what is the weight gain per inch again ?


Thanks
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Offline JonW

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Re: Shortening limbs formula ?
« Reply #1 on: October 23, 2015, 07:10:35 pm »
I think typically 5#/ inch
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Offline NOMADIC PIRATE

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Re: Shortening limbs formula ?
« Reply #2 on: October 23, 2015, 07:46:58 pm »
One inch per limb or one inch total ?
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Offline bubby

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Re: Shortening limbs formula ?
« Reply #3 on: October 23, 2015, 10:50:56 pm »
Per limb
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Offline Del the cat

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    • Derek Hutchison Native Wood Self Bows
Re: Shortening limbs formula ?
« Reply #4 on: October 24, 2015, 04:06:54 am »
You can "try before you buy" by binding the string tight down onto the limb say 1" down from the nock and seeing what it weighs!
Del
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Offline Bowyer Wannabe

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Re: Shortening limbs formula ?
« Reply #5 on: October 24, 2015, 07:03:59 am »
Here is the exact formula, presented by Mike form Boarrior Bows.
I have tested the formula on one of my hazel stave bows and it was spot on.

https://www.youtube.com/watch?v=4unczZmmcLo
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Offline Aries

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Re: Shortening limbs formula ?
« Reply #6 on: October 24, 2015, 09:24:26 am »
Del I use your method  ;D
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Offline Springbuck

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Re: Shortening limbs formula ?
« Reply #7 on: October 24, 2015, 11:15:44 am »
  I second Del's method, which can also be used to make small adjustments on tiller.

  The amount the weight changes will vary with bow style, length and geometry, too.  Taking two inches total off a 50" bow is proportionally a lot more than taking two off a 72" bow, so expect a bigger jump in draw weight, with accompanying increased set stacking, and/or breakage.
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