Very interesting bike. Never heard of it myself. 10 cylinders Bistella
The Bistella 500 is a project by a Czech engineer: a 500cc 10-cylinder double-row radial engine with 5 small Roots-type superchargers! The crankcase and cylinder casting look straightforward, but the star crankshafts look fearsome complicated, as does sorting out carburetion, but he’s done it, and it runs.
https://www.youtube.com/watch?v=zCoBtMT7_Ds
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