Yeah, the train runs. I used N scale railroad car trucks. It will run the course, I'm sure of that. The iffy part is the lift mechanism. I haven't really found a suitable chain. I experimented with a model ship chain with variable results. If anybody knows a source of miniature roller chains, please share! Yes, I considered the screw action of a stretched out spring in lieu of a chain - not convinced that it is appropriate for this project though.
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everything's better with a banjo