Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

Very cool Mempire (metric Empire)

With that transmission, I wonder if one could install a shift lever. Thinking 2 shaft with two bearing surfaces per shaft (think 8 total 4mm by 8mm roller bearings in 4 tubes installed on the 2 posts). Then while running, the operator could push to and fro derailing/rerailing the belt like a bicycle?

That would be very cool, like a simple gearbox you mean? Probably above my skill set though.