Re: Powering a 12 ton boat; need advice on big DC motors
I'm not 100% sure about this, but have you thought about having a hole drilled through the armature shaft to run coolant? It would be tricky to connect something to it because whatever connector you use would have to be able to seal while spinning.
No real need to cool the rotor, as oil cooled stators are common in motors. May need a small pump and heat exchanger to water.
Mark, "THEY" are the ones changing the rules, not you. Surely they would allow some modifications to your older boat to meet the new standards.
EDIT: Do you have access to a dry dock. Can you cut a hole in the underside of the hull and install a jetski drive. No props or driveshafts to interfere with the rudder, just need your electric motor to power the drive..
Larry ( in Southern Ontario )
1976 Ford LGT 165 / Johnson 10TC Loader / 54" Snowpusher.
1973 White Town & Country / 42" Two Stage Snow Blower.
1976 Ford RMT 66 RER / Grandson's first tractor.
Last edited by Larry LGT 165; 05-22-2019 at 01:53 PM.