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Hi Rick. The K boat plans call for shaft seals on rotating shafts with
handles inside to control thruster angle relative to level and/or direction of
rudders.
I prefer to eliminate the rotating shaft and seal idea.
My motor angle and rudder set up will be controlled by electric actuators
with just epoxy filled thru-hulls for the electrical connections.
The 4 identical motors each have their own thru-hull with 4 pins sealed in
epoxy. 2 pins for the motor and two for the actuator. ( this leaves me with one
extra set of pins in case I want to add rear dive planes later.)
The "block V " seals the guys use are well tested and reliable for the
shaft penetrators and I'll let them speak about those. I just like to be able to
put a valve on all the holes that go through the hull.
Frank D.
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