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Old 07-26-2011, 07:21 PM   #5 (permalink)
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Originally Posted by Ryland View Post
...Silicone II (non reactive to copper) on connections to seal them up completely, controllers should either be weather tight and sealed at the factory or they should be inside the vehicle, but most controllers are weather tight.

Motors should have sealed bearings, if they don't then dust is going to be more of an issue then anything else.
Silicone II is a inexpensive alternative to electronics-qualified RTV (room temperature vulcanizing) silicone rubber, but it will still release acid while curing.

Many controllers are air cooled and must be mounted in dry locations. That usually means a splash protected area in the engine compartment. Mounting them inside the passenger compartment is a safety problem, both because that puts traction voltage close to people and because of toxic smoke when they fail.

Motors usually have C3 shielded bearings. The bearings aren't sealed against the elements. Sealed bearings usually have low RPM and load ratings.
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