Models View all 1-cylinder horizontal steam engine non reversing 12 135 0 60HP High Pressure Steam Engine 12 142 1 Twin-cylinder_steam_engine (Dyn_Sim) 12 94 0 Twin-cylinder_steam_engine 7 66 0 Cycloidal Gear (high reduction) 10 108 4 Cycloidal Gear 3 125 0