Mine was annoyingly noisy if the drive shaft pressed down on the
gears in the foot. With the motor coupling adjusted so it didn't, it
was quite quiet.
(Unit: 'Honda 75' 7.5HP)
=====
And while I'm writing, here's a potential new improvement for
outboard conversions...
Presently I'm prototyping a novel configuration of reluctance motor,
first model maybe 4500W. If it works well, the steel rotor with no
magnets or wires to break loose should be good for quite high RPM.s,
compensating for the gear reduction at the foot of most outboard
legs. I've prototyped the motor controller, which should be
inherently more reliable than typical BLDC controllers. (Little or no
chance of destructive shoot-through currents.) There'll be a few
photos of the build in monthly Turquoise Energy News #91 in a few
days.
As it is simple and has no supermagnets this motor should be
relatively cheap, and easy to assemble. (And I have created a second
somewhat similar design that looks probably even better! I conceived
them both this month. The first one is half built, so it gets
finished.)
Craig
http://www.TurquoiseEnergy.com/
Victoria BC
Posted by: Craig Carmichael <craig@saers.com>
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