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Carsten,
Yes, brushless are used in model aircraft for two primary reasons:
higher efficiency and low RF interference. There are other advantages as
well.
I really know very little about electric motors, controllers,
etc. which is why I'm hoping to hear comments from the experts. I
prefer to buy and adapt off-the-shelf units that are already designed for
underwater applications (saltwater) rather than building housings and so
forth myself.
I hope you and all the PSubbers around the world are having a very
merry Christmas. The sun will rise in another 20 minutes here in the
central US.
Cheers,
Jim
In a message dated 12/25/2010 6:37:21 A.M. Central Standard Time,
MerlinSub@t-online.de writes:
Hmm.. the 1,6 to 2,6 kw high power running a modelhelicopter
units also?
Better test before speed on building 2-3 thruster this way
and find out that the sub sensors are blind by by pulse noise. The brushless
electronic is also pulse moudulation isn't it?
vbr
Carsten
<JimToddPsub@aol.com> schrieb:
>
Carsten,
>
> You brought up another advantage of brushless
motors. They cause much
> less interference than brushed
motors which is one reason they're used in hard
> drives and
cooling fans in computers.
>
> Jim
>
>
> In a message dated 12/25/2010 3:17:46 A.M. Central
Standard Time,
> MerlinSub@t-online.de writes:
>
>
Why not. But make shure that brushles motors and sonar/echosounder do
not
> interfer.
> vbr Carsten
>
>
<JimToddPsub@aol.com> schrieb:
> > Since one of the
problems with compensated motors is the tendency of the
>
> > brushes to float at higher RPM, this begs the question of
why brushless
> > motors are not commonly used instead
to eliminate that issue?
> Brushless also
> >
tend to generate less heat as well as having other
advantages. Is the
>
> > issue just the
higher cost? Less availability? Complexity of
>
controllers?
> >
> > I don't know If Minnkota
produces brushless units or not, but I can
> > contact
them. What about the manufacturers of bow thrusters?
>
> Weigh in with what you know.
> >
> >
Thanks,
> > Jim
>
>
>
>
>
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