Primitive Archer
Main Discussion Area => Bows => Topic started by: bow101 on January 15, 2014, 01:40:07 pm
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In the process of building a bi-lam bow. Have to now glue on a fade section. How long should I make it.....? I was thinking 16" with a very gradual transition. :-\
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No my bag, but that sounds like a lot of wasted limb to me. I'd have thought 4" gpip + 2" of fade either side equals 8"
Even if you want to make it a bit more symetrical you could go 4" grip, a couple of inches above the arrow pass and 2" either end for fades. which would be say 10".
I'm struggling to think what you need 16" in the middle of a bow for ... maybe writing shopping lists on it? >:D
Del
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4" grip 2"-3" fades, that's ten inches max, and you might want a power lam, how thick is the main bow that is glued up
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4" grip 2"-3" fades, that's ten inches max, and you might want a power lam, how thick is the main bow that is glued up
Its maple roughly over 7/16" X 1 1/2" wide, hope to end up with 66 NTN.
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use a powerlam, make it several inches longer on each fade, if the riser is 10 go 14 on the powerlam
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Don't think I'll use a power Lam because I already done the tapering and some floor tillering, have to get it bending more in the right places. This one may come in slightly under weight, I wanna hit about 45#
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At any rate I'm almost complete on this Maple MBM 2 lam bow. 1 1/2" @ fades 3/8" at the tips....
Its 66" NTN hit my target weight 47# @27" . Now here is the dilema I over tillered the top limb, ended up with a hinge it was to late. So I did a repair on the belly, not thinking should of done it on the Back and glued in some reflex seeing that it took some set after hinging.
So today I sanded it and added a small piece of yew to the handle back. It has 1" of positive tiller. I did a mirror shot and the tiller looks really good and it looks ok on the tree. No Twist at all and feels good in the hand.
I was thinking of maybe gluing on a proper lam chunk to the back where it hinged and scrape off the ugly part I glued on the belly. The hinge is about 8" back from the nock. Have 12 hours of work into it...
I will shoot it in tomorrow and see what it's like then............. :-\
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A hinge is a mistake in tillering. You've made a mistake... learn from it, and work hard to not repeat it. A bow with a severe hinge belongs on the junk pile, and the next one you make without a hinge does not! ;)