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

["Pierre Poulin" <pipo305@hotmail.com>]

what about a magnet inside? There is one on top of the drain plug on my ATV. 
I don't know if the brush residue is "magnetable"...

Pierre



>From: Warren Greenway <opensourcesub@yahoo.com>
>Reply-To: personal_submersibles@psubs.org
>To: personal_submersibles@psubs.org
>Subject: Re: [PSUBS-MAILIST] Pressure Compensated Trolling Motor Question
>Date: Fri, 27 Jun 2003 09:26:53 -0700 (PDT)
>
>That could work. Put a one-way trap filter inside the
>trolling motor housing. Why not?
>
>Warren.
>
>--- Chris Nugent <dirkpitt77@yahoo.com> wrote:
> > Ok, I'm tired and I have the flu, and on top of that
> > know nothing much besides the basic idea behind
> > pressure compensation, so don't hold this question
> > against me.  But, it occurred to me, and here it is:
> >  What about using the trolling motor itself to drive
> > a pump to move the compensating fluid through the
> > filter?
> >     Too much power loss?  Too complicated?
> >
> >    Nuge
> >
> > Michael Wright <mwright@smallip.com> wrote:
> > Hi Everyone,
> >
> > 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.
> >
> > The quesitons I have are: Is this a problem worth
> > solving in a better
> > way? Is the particle size large enough for an
> > automotovie oil filter to
> > catch them?
> >
> >
> > The trick I think is to use a drill powered oil
> > change pump to circulate
> > the compensating fluid through the filter. Since the
> > pump has no motor
> > and no air spaces it is pressure compensated by the
> > thruster fluid.
> > Cycling the full volume of oil through the filter
> > would take less than a
> > minute and could be done with a cordless drill (safe
> > and expendable).
> > Since the compensating system stays closed there is
> > no mess and no need
> > to bleed the air out of the system.
> >
> > So that's the idea.
> >
> > mike
> >
> >
> >
> > ---------------------------------
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>
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