Primitive Archer
Main Discussion Area => Bows => Topic started by: SMeeres3030 on December 30, 2016, 09:12:11 pm
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Has anyone had experience on Piking a bow? Is there any formula 1" = x(lbs)? I'm wondering because I have a 68" bow for my wife that ended up filleting good @ 27lbs instead of the desired 35lbs. Thanks guys I will leave this to you!
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How long is her draw length? 68" is pretty long for a girls bow. I would think you could cut several inches off.
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There is an equation in TBB Vol 1.
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Yes, Jim Haam gave a nice equation in TBB 1 but you can gain about 5# for every inch removed from each limb.
What is your wife's draw length?
Jawge
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1% limb length = 5% weight gain.
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Her draw length is 26.5"
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I have had experience piking on many occasions. Dividing the weight you want (50lbs) by the weight you have (45lbs) will give you a decimal figure, lets say 1.1111. subtract 1 from it or simply take away anything to the left of the decimal leaving you with .1111. divide .1111 by 5 you get .0222. multiply this figure by the bows length which is lets say 68". 1.51
1.51 is the total inches needed to take of the bow. divide by 2 and its the inches needed to cut off each limb. Has worked for me countless times.
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you can also tie on a temp string nocks and adjust that till you get the weight you want,, I am not good at calculations,, :)
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Thanks guys I did pike it 3.5" on each side and the steamed the lighter limb and heat tempered it. It's now nice and stiff with lots of tillering to work with. I will have to post some pics when it's finished.