TR-1 Chassis
(bot 118×80mm - maze cell 168×168mm) It has enough room to turn in place in a single cell but since it bidirectional it won’t have to. It is about 12mm shorter and 12mm wider than the Japanese version (26th All Japan MicroMouse Contest) so its diagonal clearance is about the same. The best I could do on width is about 75mm because of the motors and then I would have to change the battery configuration.

The inside diameter of the wheels was turned out a few thousandths and the gear heads were hand filed down to fit inside the wheel (it bought me a total of 2cm less in width) and cost me a day of time.

The motor mounts are still a pain in my ass (creation/alignment/positioning) Since they are hand bent it is difficult to get them the same. Any suggestions? They are 2-1/8 long by 5/8 wide sheet aluminum with 5/16 tabs on each end bent around a wooden dowel form I created. I was just thinking of zip tying the motors to the inside face of a piece of angle aluminum (1 piece holding the two motors on each end).