Four small weak tractors on tracks made from LEGO Technic with IR RC. Comparative test runs on grass and snow.

0:00 First with speedboosting gearbox
1:59 Second has highly accelerated gearbox, fast
3:20 Third with stepdown gearbox, slow
7:25 Fourth with lot of motors and gears, sluggish

The last one with 5 motors was half of an articulated 10motor machine, but the idea turned out to be unviable, sorry.

#lego #funbrick #legotractor #legotechnic #engineering