thanks, reino.
this sounds like good news, but i'm not sure i understand.
mine is a brushless Mar 48v. i intend to check with MARS on monday, but do people know if i can, without creating trouble for myself, call either direction - R or L, my 'forward'?
thanks all.
mb
--- In electricboats@yahoogroups.com, redu <reino.urala@...> wrote:
>
> mboucher
> you are lucky. Mars motors with traditional brush systems can be
> operated freely in both directions.
> Instead these "pancake" type motors are tricky: You may adjust the
> advance for both directions, but the unsymmetrical brushes may wear out
> rapidly in reverse if large voltages and powers are needed.
>
> What is CW of pancakes: It is unfortunately exactly "the wrong
> direction", if you take a noutboard motor rig and replace the gas engine!
>
> cheers,
> reino urala
>
> On 11/06/2010 09:28 PM, mboucher99 wrote:
> > Thanks for responding.
> >
> > It is belt-driven. We have a MARS 48v, with 2:1 pulley reduction with dual belts from the big pulley to the small pulley on the motor shaft.
> >
> > Unless the Sevcon PMAC is set up differently for forward vs. reverse, I don't see why the motor would care which way it's spinning. I just want to be sure i'm not going to damage anything.
> >
> > Michael
> >
> >
> >
> > --- In electricboats@yahoogroups.com, Bill Spires<spiresac@> wrote:
> >
> >> What is your set up? Is there a thrust bearing to consider or is the motor belt
> >> driven to a shaft?
> >>
> >>
> >>
> >> ________________________________
> >> From: mboucher99<mboucher99@>
> >> To: electricboats@yahoogroups.com
> >> Sent: Sat, November 6, 2010 9:54:38 AM
> >> Subject: [Electric Boats] propeller direction
> >>
> >>
> >> here's one for you all. i am about to upgrade our 2-blade, 12" dia x 5 (?) pitch
> >> prop with a 12 x 13" or 14, as has been recommended by several of you. any other
> >> thoughts? the boat is a 27' sloop. the current setup does fine in normal
> >> conditions, but is weak in strong currents.
> >>
> >>
> >> today's question: does it really matter with an electric motor whether i buy a R
> >> or L direction prop? forward is currently a left-hand twist, but the setup runs
> >> more smoothly and quietly spinning left. can't i simply reverse my switch and
> >> have it be a left-hand setup, or are there other considerations - motor - PMAC
> >> controller - that i am not considering.
> >>
> >> thanks! (again)
> >>
> >>
> >
> >
> >
> > ------------------------------------
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
>
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