LEGO Monowheel Frame and Gearbox Assembly

A two-piece frame that holds a gear assembly x 16 times, allowing for a vehicle running on the inside of the track to interface with pads on the outside of the wheel and rotate them, creating a monowheel capable of turning.

The frame includes a groove for the upstop wheels on both sides to prevent the inner vehicle from falling off and gear racks on the rim to propel itself.

Files include custom-CAD LEGO gears. Bevel gears and axles are the same as regular LEGO. Spur Gear has a circular hole for lower friction, and the ground contact disc is custom.
Also has custom track runners, allowing for an easier interface with the upstop wheels and their track.

Requires minimal supports
Fully LEGO-compatible
Must use superglue or a similar adhesive to bind the two halves of the frame together

See my "Improved LEGO Gyroscope" model if you want to create the gyroscope seen in the images.