Using POWER MOSFETS to increase R/C ESC ratings

Sure, it could be made to work.  But the complexity is in how you interface
the output of your controller to the mosfets.  If this is a normal
bi-directional motor controller then you need to build a full H-bridge with
four power mosfets.  Your current controller will have just 2 outputs to
the motor but you need to generate from that the 4 signals to drive each of
the 4 power mosfets.  That's probably going to require at least a couple of
transistors and a handful of resistors.  In the end, it will probably just
be easier and cheaper to get a higher power controller to start with.

--
Curt Welch                                            http://CurtWelch.Com/
curt@kcwc.com                                        http://NewsReader.Com/

    Yes, but you'll spend more than you would getting a speed control
with a higher power rating, especially since you'll probably blow
out some of the MOSFETs.  You can get R/C speed controls in ratings
up to at least 100A.  How much current do you need?

                John Nagle

50A at 36V

You've seen the OSMC, right?
I think at some point they had an RC->PWM interface for it.

chris