Motors and noise suppression

[ramius-ii]

Hi Neil

Hi Neil,
Stainless and brass seem to get along quite well. The easiest way to think of all this is to consider what is used in your household plumbing. As long as the two metal are seperated there is generally no problem. The coating that makes stainless, stainless change it's structure and you really are not in electrical contact with the steel core. The main objective is to avoid electroysis. Even in home you can find copper and galvanized pipes connected provided an insulator (electrolysis coupling) is use. Because of this coupling, you can no long trust a cold water pipe to be a good ground.

In most applications, aluminum is coated to avoid contact with water and not used for an electrical connection. Batteries for power in the wet area do not present a problem as they are insulated via the plastic case. Fresh water does not present the same problems as sea water or water with a heavy salt content like "soft water".

Best, Ed

[tommydeen]

Ed thats a good idea!

Ed thats a good idea! as far as the motor problems. i went to outrunner brushless motors. bucu run time, lots of torgue and smooth runnin to..
Tom

[subshop]

noise suppression

ed, the aluminum i was using in the we area is really for supporting the deck to the lower hull. i suppose i could paint it but do you thing it would present a problem if i did not ? neil

[ramius-ii]

Hi Neil

Hi Neil!
No, it will not be a problem electrically. It is too far away from other metals, it is not caring current, and there are not enough chemicals in fresh water. All that will happen is the aluminum will eventually pit and turn white, much like an old on the roof television antenna does. If you wish, you can hit it with clear coat, hard coat, or anodize it with anodize dip from Caswell Plating (www.caswellplating.com).

Best, Ed