[PSUBS-MAILIST] Electric Motors

["Jacob Lauser" <sirius@riverstyx.com>]

Aside from shallower designs using MinnKota motors, what are people using
for the deeper boats these days? I was looking at my favorite power systems
specialist's webpage last evening (Ballard Power Systems), and I saw some
awesome looking motors that might be perfect for submarine application,
assuming you could power then from a battery bank and keep it charged. What
so you guys think of these? Now, keep in mind that I am operating simply on
a "will-it-work-mechanically-and-electrically?" viewpoint and not a cost
approach. Here is the link: http://www.ballard.com/tD.asp?pgid=66&dbid=0
Assume direct drive of the screw through a shaft and gear reducer, if
necessary. I was looking at the smaller units for starters. My boat will
displace about 4 tons. I'm shooting for approximately 6 knots, and a lot of
effort is being spent on a highly efficient and quiet screw. Maybe, I'll
shroud it while in port. ;) Any thoughts on these motors or suggestions on
better ones?

- Jacob Lauser