Originally Posted by fyrstormer

Ah. Your comment about "no load on the conrod" made me think it didn't use the conrod at all.

I find myself wondering if I could make something similar using a spare motor mount magnetically attached to the side of an open-top container like a coffee can, with the crankshaft turned by a power drill. Obviously it wouldn't be anywhere near as fancy as this, but it might get the job done