Hub Motor, waterproof it with Silicone Conformal Spray(Pics)

broloch

1 kW
Joined
May 10, 2008
Messages
358
Silicone conformal spray/coating is recommended over the PCB's of controllers.

Would it be a bad idea to take some of this spray to spray over the magnets, and coils and other parts of the hub motor innards?

What are your thoughts?
The motor is pretty watersafe, except it may corrode, or develop rust on the magnets, any trouble with silicone conformal spray?

silicone-coating-sm.jpg
 
All I can think of other than slightly reduced heat transfer capability is that the gap between the stator and the rotor magnets might be small enough (and they really should be; it's more efficient if they are) to cause the coats to rub against each other. Of course, I don't actually know how thick that stuff should lay on them, though.

Make sure it can handle the temperatures inside the motor, too. It should, given that it's silicone, but just to be safe...
 
I agree, spraying that stuff on the coils would probably reduce cooling.
But I don't see any problem putting a light coat on the magnets. And some people already seal up their installed and fully seated hall sensors with ruber silicon to prevent water intrusion so I don't see any harm spraying a dab of this stuff over the hall sensors too. Just make sure to clean off all the excess so no big globs rub between the stator and outer rotating magnet ring and make unwanted noises.
 
I don't really know what the parts are. Does anyone have pics of what I should expect?

Maybe it is a little excessive what I intend to do?

How is the wolf, Link?
 
Sacman said:
Just make sure to clean off all the excess so no big globs rub between the stator and outer rotating magnet ring and make unwanted noises.

FWIW, I had that problem with the ghetto paint I sprayed over the halls when I did my motor.

The sound was really f***ing annoying.
 
Back
Top