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Jeff Morris
 
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Default Bart's Project Report....


OzOne wrote in message ...
On Mon, 10 May 2004 14:20:44 -0400, "Jeff Morris"
scribbled thusly:

You'll have to explain how that works. I was taught there's no such thing as

a
free lunch.

Remember, a Nonsuch 30 has a 540 sq ft main and requires end of boom

sheeting.
The mast is about 27 feet from the stern, and the optimal downwind angle is

180
degrees in any wind.


even more reason to have a dual system.
Hauling an end boom sheeted main is a breeze with only minimal
purchase then when the load goes on you cleat off the coarse and
switch to the fine end for trimming.
You'll be amazed at the amount of sheet you save by knocking out a
couple of purchases.


The stock setup only has 2:1 purchase to start. Some people reduce that to 1:1
in light air when racing, but I never raced my Nonsuch so I never bothered.


You can then have a higher purchase system on the fine because you're
trimming over a shorter distance.


I suppose this would be of some value to a racer, but the real win with the
wishbone rig is the ability to shape the sail while underway with the choker and
topping lift.


Gybes wil be a breeze because you can centre the main so much faster
without the extra line to haul.


Its hard to have much less than 2:1. If the wind was light, I would just reach
out and grab the doubled sheet and haul that in, effectively 1:1. If the wind
was so strong I couldn't haul the mainsheet by hand, I usually did a "chicken
jibe," tacking around, rather wondering if the boom would explode in a real
jibe.