O.S. Engine 70SZ-H Ring 3D Heli Engine  [OSMG1972]

you'll need MORE ability to provide your .60-size helicopter more authority in challenging maneuvers. You don't want to accept time intensive mounting alterations and gearing alterations.
O.S. contains the response: the 70SZ-H. It installs in identical area as a .61, and functions in practically the very same rpm band...so you'll be able to update straight away, and right away enjoy extra muscle for 3D flying and FAI F3C competition.

Particularly developed to fulfill the performance needs of FAI F3C competition pilots.

Throttle setup guide marks allow it to be an easy task to see and restore finely tuned settings after upkeep.

Additional mounting lug on front side of crankcase increases protection during extreme maneuvers.

Front and back ball bearing suppported crankshaft decreases friction and use.

Three-needle carburetor permits extremely precise alterations.

Big helicopter cylinder head provides good air conditioning fin area?Xincreased webbing regarding crankcase front side improves temperature dissipation even more.

SPECIFICATIONS

• Inventory amount: OSMG1972
• Displacement: 0.702 cu in (11.5 cc)
• Bore: 1.016 in (25.8 mm)
• Stroke: 0.866 in (22.0 mm)
• Practical rpm: 2,000-18,000
• Production: 2.5 hp @ 16,000 rpm
• Body weight w/o Muffler: 19.5 oz (553.5 g)
• Requires: Muffler & fuel