[Rhodes22-list] Define: Lee Helm

[Peter Thorn]

Tom,

Makes sense and sounds like thoughtful reasoning to me.  Do you know the pin
to pin length of your new forestay?

PT


----- Original Message ----- 
From: <SVTRITON at aol.com>
To: <rhodes22-list at rhodes22.org>
Sent: Friday, March 09, 2007 12:29 PM
Subject: Re: [Rhodes22-list] Define: Lee Helm


> hi all
> i dont write very often because i have little to add to the usually
> intelligent discussion.(other than politics) on this list..however i have
lee  helm at
> low windspeed and i have a theory as to why so many of us have it...i
hope
> that stan will chime in and tell me im wrong...lee helm is caused by the
> center of effort of the sails being in front of the center of lateral
resistance
> of the boat....i dont think the boat was designed that way but it has
resulted
> because of changes that were made to the boat...when designed my guess is
> there  was no poptop and the boat was meant to sail with the boom in the
down
> position..this would result in a larger mainsail which would bring the
center of
>  effort towards the stern and closer to the center of lateral
> resistance...with  the introduction of the poptop and the resulting higher
position of  the
> boom the mainsail has to be made smaller thus moving the center of  effort
of
> the sails forward resulting in lee helm...the 175 genny compensates
somewhat
> for the smaller main in moving the center of effort aft but if youre  like
me
> and use a 150  and a ups you really have to live with lee  helm..luckily
as
> windspeed increases the center of effort moves aft so at  the more
dangerous
> higher windspeeds you go to neutral helm and then  weather helm...i have
tried to
> compensate by adding a 3 inch extension to my  forestay and raking the
mast
> back...it helps a little but the lee helm  persists...if stan says im
wrong then
> there may be a fix i havent thought  of but if im right its something i
have
> to live with
> that's my experience and thought
> tom
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