Let me see, The rudders are resisting lateral forces ala dagger boards, while at he same
time are handling steering. So if I need lateral control and steerage to resist a broach I
have a lot of rudder in the water. Should the boat slide sideways only the rudders resist
both. All at the same time rudders are pivoting a couple of feet above water and several
feet above center of effort. Of course that performance proof waits for sea trials in more
challenging conditions.
There is a lot more rudder below waterline than just needed for steering. Either they be
really beefy or bring extras......
and probably final robust design not so cheap. STill waiting to finish my design. FEA
found some issues that need addressed. Plenty of monos with busted rudders, think HP
design has more risk and expect we will see some failures early. No expecting perfection
on first attempts.
JT
--- In harryproa@yahoogrou
>
> >
> > --- In harryproa@yahoogrou
> >>
> >> Proasailor has just been bagging Harryproas on the multihull forum.
> >> Usual bit about how having the wtw doesn't work and Harryproas haven't
> >> proved themselves crossing oceans. Nothing specific. It does become a
> >> bore. Still it gives an excuse to reply and highlight the advantages
> >> of a Harry
> >>
>
> G'day,
>
> Sure does, and you are doing an excellent job, thanks. Proasailor is
> Joe Oster, who was thrown off the proa group for abusive language.
> Should be amusing to see what he comes up with on the free for all
> Sailing Anarchy site if he is pushed hard enough.
>
> As for the rudders, the loads are no higher than they are on many
> monos, and just as easily, (or as difficultly) engineered and built to
> take those loads.
>
> Regards,
>
> Rob
>
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