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14643Re: gaff rig running backstays

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  • Chris
    Apr 2 6:22 PM
      --- In Michalak@yahoogroups.com, "adventures_in_astrophotography"
      <jon@...> wrote:
      >thank you Jon,
      excellent advice, I will do as you suggest
      > Hi Chris,
      >
      > > with the freestanding mast would it be an idea
      > > to have running backstays for when you are sailing down wind.
      > > There tends to be a lot of pressure put on the mast with a gaff
      > rig
      > > when sailing down wind.
      > > Has any one any ideas from actual sailing experience.
      >
      > I sail a 23'-6" Bolger Light Schooner with a gaff cat schooner rig.
      > The sails are identical at 103 ft**2 each. Although I enjoy running
      > her wing-and-wing ("read'n both pages"), I don't do this in much
      > wind to avoid the possibility of an unplanned jibe, which could be
      > dangerous and destructive. Perhaps more practice with jibing would
      > ease my mind, but I'd be concerned that with a running backstay, the
      > chance for damage to the rig would be greater if she suddenly jibed
      > with the backstay set up. Certainly you would be at more risk of
      > taking a swim in this situation, since the backstay might prevent
      > the boom from going where it wants to and thus cause a knockdown.
      >
      > In any case, all the driving force of the sail is shared between the
      > mast and the sheet regardless of the point of sail. Beating and
      > reaching, some of this force heels the boat, but then crew and hull
      > weight is countering the heel, so there's still considerable bending
      > force on the mast on those points of sail as well. If your mast is
      > designed to be unstayed, I would leave it that way and possibly beef
      > it up before adding a backstay, unless I planned to use it only for
      > keeping a jib luff tight when sailing upwind.
      >
      > Jon Kolb
      > www.kolbsadventures.com/boatbuilding_index.htm
      >
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