[snip]
3 There are two ways of water proofing a thruster. One method is to fill
the thruster with some fluid, usually oil, so there is no room for water
to
enter. The other way is to design your motor pod or shaft drive through
hull with a pump shaft type seal. For low pressure there are rubber seals
on the market, but to go deeper, it's best to use a carbon and ceramic
face
type seal. These are used in water pumps to keep water from dribbling out
all the time. You just install it backward, so water doesn't dribble in.
[snip]
Hi - another thought on Dan's offering is to compensate the motor pod with
a
line running to a scuba tank. The regulator from the tank compensates the
pod automatically. The standard seal from the manufacturer doesn't have
to
be tinkered with using this method. The one thing you will have to do is
drill/tap a hole in the motor casing to run the line(s) and the
through-hull.
There may be more than one item that needs compensating, like fore and aft
trim tanks in the case of magical Child. I will be running lines not from
a
tank directly but from a manifold.
Rick L
Vancouver
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