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

you will need MORE power to offer your .60-size helicopter more authority in challenging maneuvers. You don't need to accept difficult mounting alterations and gearing alterations.
O.S. contains the reaction: the 70SZ-H. It installs in identical area as a .61, and functions in virtually equivalent rpm musical company...so you are able to upgrade immediately, and right away enjoy additional lean muscle mass for 3D traveling and FAI F3C competition.

Specially developed to generally meet the performance calls for of FAI F3C competition pilots.

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

Extra mounting lug on front part of crankcase increases protection during extreme maneuvers.

Front and right back ball bearing suppported crankshaft decreases friction and make use of.

Three-needle carburetor allows acutely accurate alterations.

Big helicopter cylinder head provides good ac fin area?Xincreased webbing regarding crankcase front part improves heat dissipation more.

NEEDS

• Stock quantity: 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 fat w/o Muffler: 19.5 oz (553.5 g)
• needs: Muffler & fuel