In article om,
"Len" wrote:

I'm considering an ATS and I'm trying to define the right
measurements, particularly the luff-length. Are there any rules of
thumb that apply here?

What luff-length is appropriate with a forestay-length of 20 meters?

What is the difference in height (re the luff-sheet-eye) between
sailing the ATS a) downwind and b) slightly upwind ?

From a previous post, see
http://sailingsource.com/neilpryde/newslet/19/19-trim.htm for a good
intro.

Luff length is slightly less than the distance from the halyard sheave
and the downhaul turning block, or approximately your forestay length,
maybe a few inches shorter. You definitely want to be able to flatten
the luff for close reaches.

--
Jere Lull
Xan-a-Deux ('73 Tanzer 28 #4 out of Tolchester, MD)
Xan's Pages: http://members.dca.net/jerelull/X-Main.html
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