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Re: [SCA-Archery] lb per Dacron? I forget

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  • Susan Kell
    Hi Ragnar - Li has been experimenting with Dyneema. As I understand it, Fast Flight has *no* stretch and Dyneema has a tiny bit, so he suspects it might be
    Message 1 of 9 , May 31, 2000
      Hi Ragnar -
      Li has been experimenting with Dyneema. As I understand it, Fast Flight
      has *no* stretch and Dyneema has a tiny bit, so he suspects it might be
      easier on prods.
      -- Ygraine


      On Tue, 23 May 2000, D Humberson wrote:

      > Siegfried,
      >
      > I don't twist my strings at all, in fact I try hard to make them as straight
      > as possible. I shoot a 104# gladius prod, and the only string failures in
      > well over 10000 shots on my current prod have been due to serving wear
      > either where the nut rubs the center serving or(rarely) where a tip rubs the
      > end serving. My strings are 20 strands of B-50, not for strength so much as
      > sheer thickness, and I serve with thick braided fastflite( .025, I think,
      > I'll check and post a correction from home if needed) wound as tight as my
      > serving tool will allow.
      >
      > Li Kung Lo from the East had mentioned another serving material he liked
      > better, but I lost the reference. With luck, he or someone who knows him
      > will read this and post that other material's name.
      >
      > For me, there is a direct relationship between serving tightness and serving
      > life.
      >
      > Ragnar Ketilsson
      >
      >
      >
      > >From: Eli White <eliwhite@...>
      > >Reply-To: SCA-Archery@egroups.com
      > >To: SCA-Archery@egroups.com
      > >Subject: Re: [SCA-Archery] lb per Dacron? I forget
      > >Date: Tue, 23 May 2000 12:41:09 -0400
      > >
      > > >B-50 Dacron at 50 lbs per strand is over 35% stronger than type B. You
      > >may
      > > >find that you will want to use fewer strands than indicated below.
      > >
      > >Well, I would myself still use what's listed below, and have that extra 35%
      > >as 'spare safety room'
      > >
      > > >bow wt. Strands
      > > >20-30 # 8
      > > >23-35 10
      > > >35-45 12
      > > >45-55 14
      > > >55-80 16
      > >
      > >Ok, a question here ...
      > >Basically the rule of thumb listead above seems to be:
      > >10 strands for 25#
      > >Add 2 strands (one wrap) for each additional 10#
      > >
      > >Except this falls apart at the higher end ...
      > >
      > >The chart by this should read:
      > >55-65 16
      > >65-75 18
      > >75-85 20
      > >
      > >But instead decides that once you are over 55, don't worry ...
      > >
      > >So, for my 120# crossbow ...
      > >By their 'final jump' of 25# per 2: 80-105=18, 105-120=20 ... I would only
      > >need 20 strands, 10 doubled ...
      > >
      > >But by the previous rule of thumb, I would need 28 strands ... 14 doubled
      > >over ...
      > >
      > >I like the sound of that better ... anyone have final thoughts?
      > >
      > > >For best results bowstring should be twisted 1/3 turn per inch and well
      > > >waxed. Do not serve too tightly.
      > >
      > >Hrmmm, why not serve too tightly? Just curious, I usually serve pretty
      > >tight ...
      > >
      > > >Hope this helps
      > >
      > >It did, exactly what I wanted to know!
      > >
      > >Siegfried
      > >
      > >
      >
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