aelorenzo

They have good quality, but they are different regarding wiring, just one thing to take into account. Did your friend use a buwizz or similar device to change rotation in one motor? Because it's the only way without modifying the hardware. Thank you

I don't have a buwizz power unit, I am planning to use it first with EV3. Thank you for the info, I have to check carrefully for the buwizz hw, maybe I have to consider it as an option. Thank you!

Did you use Chinese motors in this car? The problem with these motors is that the wiring is fixed, not like the original from Lego, with the connector (motor polarity changed if you change the orientation of the motor) . If you want to use them side by side in the rear wheels of a car you are in troubles with the simetry, because one motor will rotate in opposite direction than the other. It is imposible to mount them in a common rail setup with side by side simetry. I have in mind only one option, rewire and soldering some motors for common rail setup. Am I wrong? Thank you