"jimthom" wrote in message
om...
Thanks again for your ideas.

The problem is really what type of coupling to use to resist the
torque forces of the tiller. If I could use flanges, the total
x-section area of the bolts that hold the flanges together should be
the equivalent to the x-section area of the rudder post, so there is
the potential for a lot of torque. As you said, splines may losen and

Uh I don't think so. The polar moment of inertia should be the same
shouldn't it rather than cross sectional area?

So a few little bolts on a very large diameter flange would have the same J
as a rudder stock that is very close to centerline.


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Evan Gatehouse

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