Thank you….
The Mamod loco was more of an experiment than anything else. I had a few Meccano parts lying around & I had the idea of making some sort of geared loco from an old MM2 which was bought very cheaply from an antique fair. Knowing full well the unregulated steam to the single oscillating cylinder makes the stationary engine run like the clappers with a good fire beneath the boiler & that power would be of more use geared down. So it was just a matter of cobbling the few pieces of what I had to make something work. I had to play around with the gear ratios a little to get the speed/torque combination just right for the engine. With use, the nitrile drive bands are starting to stretch & slip on the pulleys, so I am thinking sprockets & chain would be a better option.