Subject: RE: just selected my motors... [TANKS]
Date: Wed, 14 Mar 2007 11:20:01 -0400
From: gburb-at-advantagecs.com
To: tanks-at-rctankcombat.com
You need a brushless speed controller with reversing. The ESCs that come with those motors don't have reverse. You could wire up a reversing hobby car or boat controller (brushless of course) to that motor, replacing the included ESC. This doesn't make much economically sense to *me*, but this is how you get brushless motors to be reversible.
Gene
-----Original Message-----
From: tanks-admin-at-rctankcombat.com on behalf of Derek Engelhaupt
Sent: Wed 3/14/2007 12:40 AM
To: tanks-at-rctankcombat.com
Subject: Re: just selected my motors... [TANKS]
Isn't Paul Ratajczak using a set of motors similar to these on his T048 T-34
tank? Are his brushed or brushless?
Derek
On 3/13/07, Philippe Lachapelle <plachapelle-at-gmail.com> wrote:
>
> hum... how hard would it be to simply switch CW <-> CCW mode with external
> lead to control operation mode... it look easy to do and cheaper than a
> mecanical transmission... is it a stupid idea? :)
> My goal here is to have proportional speed control foward and reverse with
> an home made interface(to connect to a C6C) to the motor that already have
> the speed control intgrated in it... that would be an inexpensive solution!
>
> On 3/13/07, Frank Pittelli <frank-at-rctankcombat.com> wrote:
> >
> > Philippe Lachapelle wrote:
> > > I just ordered 2x 400 Watt - 24 Volt Brushless Electric Scooter Motor
> > > (KollMorgen) P/N CTI-187-2 Direction RHS , Counter Clockwise Spin (
> > > Looking -at- the Motor face/spindle UP ) 5" Diameter , 5/16" Shaft 12
> > gauge
> > > power leads Black/Red . Has built in Motor Control. 3 Mounting Holes.
> > > They are a great deal on e-bay and it look like I'll be able to have
> > > proportional speed with just a trimpot(a digital or servo controlled
> > > one, and reverse power leads to have reverse...)
> >
> > That's an excellent motor, but you can *not* reverse them simply by
> > changing the polarity of the power leads. As someone else pointed out,
> > that will fry the built-in electronics. The phrase "can be simply
> > re-wired to run clockwise" probably means you can easily take the case
> > apart and re-arrange the internal parts to cause it to rotate in the
> > other direction.
> >
> > You'll need some sort of mechanical transmission if you want reverse.
> >
> > Frank P.
> >
>
>
>
> --
> Philippe Lachapelle
> ---------------------------------------------------------
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