OzOne wrote in message ...
On Wed, 26 May 2004 22:55:10 +0100, "Donal"
scribbled thusly:


"DSK" wrote in message
.. .
Walt wrote:
[snip]

The thing to remember is that the relative angle of the sail to the
boat
is what's important. Always look up past the boom... the top batten is
a
good indicator...

Could you expand on this, please?


Donal. if you go here
http://www.northsailsod.com/class/et...ls_tuning.html

There's a pretty good outline of our tuning procedure.

Thanks. I've read it ... and I'll read it again.


Look at the chart for mainsail tune and note that we rely a lot on top
batten to indicate position of the leech on the rest of the sail.
Closed leech will help us climb in anything above light air up to a
fresh breeze.
In light it's laid off to promote flow and reduce stalling, Heavy it's
open to ease leech pressure.

BTW this is a North guide, my setup is a little different.
Note just how finicky the Etchells is to setup and YES, we do change
the entire rig setup every race.

That web page gave me the impression that you had to adjust the mast rake
*during* some races!!

Regards


Donal
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