Re: [PSUBS-MAILIST] Re: Big motor for PSUBS...ATTN: K. MARTINDALE...

[s_lindblom@conknet.com (Steve Lindblom)]

Can you elaborate on this - is it just a concern with the higher voltage
motors, or all of them?

I have a little 30 lb thrust motor I plan to use in a project, and was
intending to run it flat out without the controller, as I gather a number
of other people are doing. The controller it came with is fairly bulky, and
uses the aluminum base of the top unit of the troller motor setup as a heat
sink. I could just include all the circuitry, but I'm trying to set it up
as a sealed module, and getting that much heat sink area would be
difficult. The other thing about the stock controller is that it gets quite
hot even at full throttle operation which suggests to me that the
controller is wasting electricity that would better be used driving the
motor.

Also, I'd be interested in any comments you might have on how the speed is
controlled on these units - is it simply by adjusting the voltage, or
something more sophisticated? That is to say, could you run a 24 volt
troller motor as a simple 2-speed by wiring it so it would recieve 12 or 24
volts?

Oh, any contact phone number at Lake motors?

Ken wrote:
>What I also found out was that the controller was much more expensive than
>the motor which is why I designed and built my own controller. The controller
>is required to limit inrush current which can demagnetize the stator magnets.
>Direct application of 24 or 36 volts can wipe the motor out.
>