Re: boom outhaul -- Every inch lost adds 3 inches of draft
Mon, 24 May 1999 09:58:53 -0700

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West Wight Potter Website at URL
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Point well made, Richard. The sail is cut so that the luff is curved when you
lay it flat. When attached to the straight (not quite straight, if you're Judy)
mast, the luff curvature translates into into belly of the sail. If slugs are
added without relocating the tack of the sail, there will be more "belly" even
if the footrope is pulled taught.

More practically though, since we typically don't sail with the footrope pulled
taught, the outhaul acts on much more than just the foot of the sail. Other than
the full length batten, it's the only control generating tension on the sail in
the fore and aft axis. Therefore, I think it's safe to assume that, for
practical purposes, if you move the luff back an inch, you'll need another inch
of outhaul to compensate.

Dave Kautz
P-15 #1632 Tilly Lucy
Palo Alto, CA

______________________________ Reply Separator _________________________________

Dear Judy -
With great concern, commitment and confidence I believe you are wrong
about the slugs creating a potential out haul problem.
With or without the slugs, the distance between the goose neck and
the end of the boom remains the same. If you put slugs on the goose neck you
of course would be lengthening the foot of the sail on the boom, but that is
not the case.
With or without the slugs on the sail, the foot of the sail is in
exactly the same position because you have not changed the position of the
goose neck.

Richard S. Karam
P-15 #2098 Oops
Oklahoma City Commodore