I agree with Rob that it should be very easy to beef up everything and
spread loads over larger areas should the need arise. What about a
rather big trim tab (at only the lower third of the rudder)and use
that for steering and leave the rest of the rudder for lateral
resistance? In that way the rudder would be kind of a tacking
keel/centre board set to the optimum angel for windward performance.
I still have no real understanding of the beam mounted rudders and
especially the configuration of a lifted rudder and itīs exposure to
wave action and resulting loads. As water is much heavier than air I
always liked the fact that you could pull the rudder up and out of
harms way in the cassets used by Blind Date and Strange Bird. How
about these cassets mounted on the beams. If not in use you pull a
rudder up instead of swinging it under the bridge deck or in front of
the bridge deck where is is likely to get slapped by solid water? If
the cassets have a main hinge on the top of the beams they and the
rudder not in use could be rested on top of the bridge deck. Or is
this what is already planned?
Heinrich
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