Subject: Re: [harryproa] Rudders on lee hull
From: "Rob Denney" <>
Date: 4/12/2007, 10:54 PM

No, for the following reasons;
1 They would lift out of the water if the hull flew
2) Their drag  would increase weather helm.  weather helm is not a problem on harrys so this may not be a valid reason any more.
3) I don't like all the weight in the windward hull, except for racing.  Racing implies lifting the ww hull, see 1.
4) I have had enough trouble getting lee hull rudders to work without starting on new sets of rudder problems.
Despite all the above, the rudders on my Elementarry are getting closer to amidships and I drew a Little America's Cup proa with rudders and rig in the ww hull.  Huge rm (lack of rm is a problem with these boats) but prone to windward capsize unless the crew were very good.
We are about to launch a 6m proa with a pretty radical approach to windward hull steering.  Keep an eye on the web page for pics and progress.  If it works (pretty big if), it will change a lot of preconceptions about proa steering.

----- Original Message -----
From: Todd
Sent: Friday, April 13, 2007 12:28 AM
Subject: [harryproa] Rudders on lee hull

Rob, Have you ever experimented with just the rudders on the windward

Or dagger board in center on leeward hull and rudders on ends of
windward hull?

Or any other configuration ?


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