Running a sensorless motor on a sensored esc.

[SpEEdyBL]

You would need run two motors (at least one sensored) in order for this to work.

All you would need to do is attach equal pinion gears to each motor and hook them up to a single spur gear (like in the e-maxx) so that the rotors would each spin according to one another.

Here's how it would work: Because the rotors are fixed in corrisponding positions, only the sensors in one of the motors would be required in order for the controller to work.

You would have to run the motors in parallel, and the power wires would have to corrispond. Not that it should actually be done. Just an Idea. What do you guys think?

[glassdoctor]

I really can't answer based on my own copyrighted knowledge, BUT :) my instincts and the advice from brushless esc manufacturers say NO. Don't do it.

Even with sensorless systems, two motors on one esc create problems. It CAN work, but the odds are stacked against you no matter how you install the motors.

Things like spec tolerances between motors can cause real problems. And the motors may not be in perfect sync even if geared together. You should try it, and tell us... ;)

Your example might work ok, I dunno...

[kufman]

In theory, in might work. In reality, it would be very hard to get things setup to match theory. Even motors that are the same make and model, are slightly different. Brushless motor control is very precise, micro seconds make a world of difference. Just my $0.02

[mac0326]

In theory it could work, however, in practice it is simply not economically or mechanically worth the effort. The controller would have to be rated for enough power (amps) to run two motors, for one. Also, it is practically impossible (and definately improbable) to get both motor in exactly the same position and keep them there (the gear mesh alone would leave room for synchronization issues). Also, if one of the motor came unplugged or otherwise disabled, it would likely cause problems for the rest of the system (the working motor and controller). Not to mention that you could simply get a more powerful motor and achieve the same results (power) as two smaller motors with less rick and less weight. Just my 2 cents.