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CoolROD · 07-26-2003, 08:37 AM

Well...not exactly. Pure water is not conductive at 12V -so that part is fine. But as the motor runs it will put carbon in the water -which is conductive. I have no idea how long it will take before that is a problem though. The steel parts are not going to like being wet either -it will accelerate corrosion. The water is a real drag on the armature and will decrease the pumping work the motor can do ... or will increase the amount of work the motor has to do. This will appear as accelerated brush wear and increased current consumption.

High Performance R/C car motors get hot enough to partially erase or weaken their magnets. I don't think the Johnson is going to get hot enough to damage itself -but cooling it is a good idea.

edit: Was that a "Big Johnson" joke?

07-26-2003, 08:37 AM	#186
CoolROD Cooling Savant Join Date: Mar 2003 Location: North Carolina, USA Posts: 225	Well...not exactly. Pure water is not conductive at 12V -so that part is fine. But as the motor runs it will put carbon in the water -which is conductive. I have no idea how long it will take before that is a problem though. The steel parts are not going to like being wet either -it will accelerate corrosion. The water is a real drag on the armature and will decrease the pumping work the motor can do ... or will increase the amount of work the motor has to do. This will appear as accelerated brush wear and increased current consumption. High Performance R/C car motors get hot enough to partially erase or weaken their magnets. I don't think the Johnson is going to get hot enough to damage itself -but cooling it is a good idea. edit: Was that a "Big Johnson" joke? __________________ Jack of all Trades, Master of None. Last edited by CoolROD; 07-26-2003 at 09:02 AM.