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Re: Tensioning rigging Sabre 28

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  • silentrunning17
    ... Thanks for the advice.
    Message 1 of 5 , Sep 30 6:00 PM
      --- In Sabresailboat@yahoogroups.com, Carter Brey <cbrey@...> wrote:
      >
      > Hello,
      >
      > Numbers are us.
      >
      > The S28 has 1/4" backstay and upper shrouds, 7/32" lower shrouds, all
      > 1x19 SS. I'll assume you have roller furling gear on your headstay.
      >
      > Breaking strength value for 1/4" 1x19 wire is 8200 lbs.
      > Breaking strength value for 7/32" 1x19 wire is 6300 lbs.
      >
      > Folks like Brion Toss (who has a great video on tuning) will suggest
      > about 15-20% of breaking strength for the backstay and upper shrouds,
      > about 10-12% of breaking strength for lowers. I like to be conservative.
      > So:
      >
      > Backstay and uppers: about 1200 lbs (forestay will automatically be
      > tensioned slightly higher because of its more acute angle).
      > Aft lowers: about 630 lbs
      > Forward lowers: about 750 lbs
      >
      > These are only rough guidelines for initial setup. The best tuning is
      > done empirically, watching the behaviour of the shrouds under sail in a
      > fresh breeze and studying mast bend with your eye right up against the
      > mast.
      >
      > Have fun,
      > Carter Brey
      > S28 MkII #532 Delphine
      > City Island, NY
      >
      > On Wed, 2009-09-30 at 00:32 +0000, silentrunning17 wrote:
      >
      > >
      > >
      > > Does anyone have actual specs on tensioning standing rigging? The
      > > manual is pretty arbitrary. I would like specs in pounds or kilograms
      > > if anyone has them.
      > >
      > >
      > >
      > >
      > >
      >
      Thanks for the advice.
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