Hey guys,
For the past couple weeks I've been working on a prototype ball bearing wheel assembly for a knex train. Currently I made the non-screw pieces out of plexiglass but am planning on eventually 3d printing these pieces. After some small adjustments and a couple tests, they run quite smoothly and seem to have a good bit less friction than the standard knex wheels. Has anyone else tried to make custom wheel assemblies or use ball bearings? If you have any pointers/suggestions for a 3d printed wheel assembly like this with ball bearings let me know! Thanks!