My new 4 x 4...

[Grainfarmer]

Maybe the Challenger will be converted one day, but I got too many other projects in the workshop. Untill then he will stay in the display case.

[valtra103]

How much torque those motors have? I need to choose motors and I have no idea how much torque is needed for RC tractor.

[Grainfarmer]

I do not know how much torque the motors make. In the CLAAS tere are 4 brushless with a planetary gear reduction.
In my MF 1155 I have two of them 12V RB-Motors: http://mfz-blocher.de/getriebemotoren.html
Strong enough for plowing...