Here is the chassis I build for the narrow F1 cars, past and present. The dimensions of the Minebea square can allow you to flat mount it on a chassis. The centerline of the pinion shaft matches the rear axle center line. This really simplifies what is needed. A brass strip is used for the base, and every thing else is glued on. The rear Lego Blocks even have mounting holes that allow you to flush mount flanged 3/32 bearings. Easy for anyone to build and the results are quite surprising.
The Minebea S can turns 16K at 12 volts, but can easily handle more voltage if you want to spice the ride up. I have run them for hours at 14 volts and they don't even get warm. They have magnets in the four corners and have a 6 pole armature. The result is a small motor with surprisingly good brakes. On a home layout they can propel the car to critical velocity for desloting so they are fast enough. On a club track with a long straight away they don't have the punch to run with 130 type motors I have measured the torque at 50 gm/cm
I have twinned them up in a sidewinder config to double the torque in an effort to increase acceleration. An example of this is in a 132 Ferrari F 4 I built

Alfa 12 C chassis


