Re: [PSUBS-MAILIST] Pressure Compensated Trolling Motor Question

[Michael Wright <mwright@smallip.com>]

Warren Greenway wrote:
 > What about a simple windage tray that the
> rotation of the armature causes the oil to circulate 
> through, that in turn "scrapes" the heavy particles
> out. You could then clean the scraper periodically.


That would work to extend the time between oil changes.  It would make 
it necessary to open the motor rather than just drain out the oil though 
(perhaps not a time savings).  If it worked well enough to make the oil 
last as long as the brushes it would be a great solution (that way you 
just change the oil and brusehs simultaneously).

I'll visio to the pump/filter assembly and shoot a picture of the pump 
  and filter.  The total volume/mass should be under half that of the motor.

> 
> Warren.
> 
> --- SFreihof@aol.com wrote:
> 
>>In a message dated 03-06-26 16:31:02 EDT, you write:
>>
>><< I have a question for anyone using Liquid
>>Compensated Trolling motors.
>> 
>> I've heard that the drawback to them is that the
>>carbon dust from the 
>> brushes goes into suspension and eventualy causes a
>>ground fault to the 
>> case (or direct short if no ground fault detection
>>is used).  This seems 
>> quite plausible with the simple solution being to
>>change the 
>> compensating fluid regularly. >>
>>
>>Question:  Do brushes have to be carbon?  Can they
>>be replaced with copper 
>>brushes to eliminate the graphite dust?
> 
> 
> 
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