Two-cylinder steam engine (M30)

This is a vertical di-cylinder steam engine. It uses brass casting, integrated processing crankshaft, crankshaft diameter is 56mm. It comes with a flying ball speed limit device. Intance pipe is equipped with oil cup. I believe you Will like it.
Engine size: length 110mm, width 90mm, high 100mm. Weight 1200g.
The displacement is 3.7cc. The cylinder diameter is 14mm, and the stroke is 12mm.