This is a modified differential from tahustvedt (https://www.thingiverse.com/thing:2361718).
Because the gears from the original design didn't mesh correctly, I've changed the design to use four instead of five small gears.
I have tested it and so far it runs smoothly. Be sure to add some lube to all of the gears.
https://youtu.be/7eVGyiN_AUI
body_gear.stl | 127.2KB | |
main_gear.stl | 418.4KB | |
rim_gear.stl | 230.2KB | |
small_gear.stl | 62.6KB |