Quote:
Originally Posted by BrianG
What I see here is you are going from battery, to converter, to some sort of "speed control" (which does it's own converting), then to motor. Seems like there is an extra unneeded stage here. People's arguments of adding something else to the chain will lose efficiency does have merit. Why not simply do away with the converters and stock speed control and use a high current ESC in brushed mode and run that on 4s? The MMM is good for that, even in reversing brushed mode (and will have some programming features your current setup doesn't have, not to mention an LVC). And a simple ESC would weigh much less than those converters, wiring, and stock speed control, and retain greater efficiency since there are fewer stages. You can use an e-bike twisty knob thingy as the speed adjustment going to a servo tester.
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Hi Brian,
I think you make some very valid points and you present a great idea.
The only thing about using the MMM as a speed controller is:
The type of trolling motor I have is the Minnekota Powerdrive. This trolling motor uses a servo motor to steer with. The factory setup uses a wired remote foot pedal for control.
But then to add to the complexity of this conversion, I bought the wireless co-pilot add-on.
The co-pilot add-on allows the user to control the trolling motor wirelessly from a control that is worn like a wrist watch.
I wonder if the circuits inside can be isolated and separated? If the Co-pilot uses pwm as a means of speed control, using the MMM to power the motor might be possible. I'll have to do some more research on this.
If this isn't possible, there will be an efficiency loss. I'm hoping to keep it minimal. Main losses will be in the form of heat at the converters.