O.S. 105HZ Heli Engine
Stock Number: OSMG1960Displacement: 1.048 cu in (17.17 cc)Bore: 1.442 in (29 mm)Stroke: 1.024 in (26 mm)Practical rpm: 2,000-16,500Output: 3.75 hp @ 15,000 rpmWeight: 21.03 oz (596 g)