Search found 52 matches

by quamau
Feb 01 2011 6:09pm
Forum: EBike Technical
Topic: Hub Motor Cooling Idea
Replies: 26
Views: 2867

Re: Hub Motor Cooling Idea

I hate to repeat myself, but I really think that the most effective way of cooling a hub motor is by filling it with oil. The weak link in hub motor cooling is air in the middle between the coils and the shell of the motor. The oil removes the heat from the coils and transfers it to the motor shell....
by quamau
Jan 31 2011 5:07pm
Forum: EBike Technical
Topic: Hub Motor Cooling Idea
Replies: 26
Views: 2867

Re: Hub Motor Cooling Idea

I remember somebody filling the motor by dielectric oil, thus achieving very effective power dissipation through the whole outer surface of the hub motor exposed to the flowing air. It was a small geared, would it be different with this gearless 9c?