[MHml] Forestay tension.
paulnudd at actionpotential.com.au
Thu Nov 2 08:21:26 EST 2006
Larry Forgy wrote:
> One argument for the better windward ability of the tris was that with a
> center hull, they could get better tension on the forestay. This made
> sense to me in my old fixed-mast monohull days, but is that still true
> with more modern three-stay rotating-mast rigs? I don't see how tris
> with that configuration could have better forestay tension than a cat.
Masthead rigs use backstay to tension forestay and benefit from a stiff
Fractional rigs can use running backstays to tension forestay and
benefit from a stiff platform. If they don't use running backstays they
use mainsheet tension to tension forestay and benefit from a stiff platform.
The smaller the jib, the less significant the forestay tension.
No jib, no significance. Better still no forestay!
The most efficient rigs are found on sailboards and c class cats and
these have no jibs.
Statistics show that generally a tri can be faster than a cat of the
The reason for this will always be speculation (how can we test the
Although a tri can achieve a straighter forestay than an equivalent cat,
I don't think this feature is a significant reason why tris can be
faster than cats of the same length.
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