rick,
would making the rudders bigger or moving them closer to the ends fix this "problem"?
you round up with the lw hull to lw b/c the ww hull is fully immersed causing lots of weather helm. the helmsman hence has to use more AOA on the rudders to counteract. perhaps more than they were designed for, causing them to stall. so make them bigger, and/or move them towards then ends, no?
of course this would add drag at speed. but adjustable dagger rudders could be flexible in this regard.
i'm moving to the chesapeake in march. any proas there need crew?
ben
--- In harryproa@yahoogroups.com.au, Rick Willoughby <rickwill@...> wrote:
> It is simply a practical way to sail the boat in light wind. We were
> holding between 4 to 5kts making less than 40 degrees to true wind
> sailing the wrong way around. (I have the GPS track and wind
> direction from doppler radar but there is a time shift and it is too
> good to be true - that said we were sailing faster and possibly
> higher than a modern cruising cat and 30+ft keel boat.) In the same
> conditions we made 3 attempts to sail to windward with the lw hull on
> the lee side. Speed was between 2 to 3kts but inevitably there would
> be a wind shift or loss of concentration and the boat would round
> up. We gave up beating and just sailed off the wind. By that stage
> the wind had picked up a bit to average about 7kts and we were making
> 6 to 7kts reaching. If the boat could be sailed in both directions
> we would have been better off sailing with the ww hull on the lee
> side on both tacks. However the current rudder set up with chain
> makes bi-directional sailing dicey.