| From: Tlhbow
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| Date: 01-May-20 |
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Pretty much finished with this selfbow and the string vibrates about 3 seconds after the shot. Plucking it a couple inches the same. Does not have hand shock or hit the arm. The string on it is a long string for building. Really twisted up. Not staying on it. Any ideas are appreciated. Thanks,
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| From: Runner
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| Date: 01-May-20 |
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What is the string material?
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| From: Mike E
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| Date: 01-May-20 |
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Could be your sting is too long?
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| From: Tlhbow
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| Date: 01-May-20 |
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D-97
The string is long, just twisted up fro brace.
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| From: JHPope
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| Date: 01-May-20 |
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I have been shooting light arrows out of a Hill Half-Breed and noticing just a little vibration coming through the limbs. I have temporarily taped on some Limb Savers and that solved that problem. I know shooting heavier arrows would have solved the vibration but only intent to use the light arrows for 3D shoots and I don't hunt any longer. I might should have started another thread concerning this but it might help you if you wanted to try it. I know the Limb Savers isn't "Traditional" on a Hill bow, but its my bow and as the ole cook at Lonesome Dove said "I'll whack that bell if I want to!"
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| From: 6bloodychunks
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| Date: 01-May-20 |
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ive used a too short string,and when twisted excessively,
it made lots of noise,just like you describe.
my thought is that it makes the string behave more like a solid wire, than bundles of individual strands.
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| From: George D. Stout
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| Date: 01-May-20 |
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3D is rarely over 30 yards, I don't understand why you can't use heavier arrows for that. ????
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| From: Arvin
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| Date: 01-May-20 |
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How many strands in bundles? You only need 8-10 strands total to make a 50# string with D97.
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| From: fdp
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| Date: 01-May-20 |
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I'm thinking what Arvin may be thinking. Simply too much mass in the string.
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| From: Tlhbow
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| Date: 01-May-20 |
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Yes I may have asked too quickly. Will build a string for it this evening and see if there's a change. The long string on it can be untwisted so it's not braced at all. Could be too much mass.
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| From: longbowguy
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| Date: 02-May-20 |
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Yah, that is a lovely slender bow and deserves a lovely slender string. Being so s lender the bow will have little mass to absorb any stray energy that did not go into the arrow. I think that may be a good lively and lovely bow. You wouldn't want a dead one. Enjoy the bow and the note it hums. - lbg
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| From: Tlhbow
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| Date: 02-May-20 |
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Put a 12 strand 8125 on it. It changed the tone only. Puffs stopped the vibration completely. Thanks,
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| From: GF
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| Date: 02-May-20 |
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I think your subject line pretty well sums it up…
Heavy string. Vibration.
I don’t really know beans about making either strings or Self bows, but if the string keeps vibrating, then there has to be some thing about the dynamics of the string and the limbs and how hard that string gets plucked which is allowing the vibration to continue much longer than it should. Everything has to balance, right? And you’re not going to alter the bow now that you have that sweet looking tiller on it, now, are you?
So just intuitively, it seems like your options are to not pluck the string so hard (for which the only cure I can imagine would be to loosen up your nocks, and that still might have nothing to do with it), or go with the lighter string so that the tension on it will damp out the amplitude of the vibrations that much more quickly. And of course it would be kind of silly to alter the knock fit on the arrows until you have settled on the string.
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