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

You need MORE capacity to offer your .60-size helicopter more authority in challenging maneuvers. You don't desire to accept time-consuming mounting alterations and gearing modifications.
O.S. has got the response: the 70SZ-H. It installs in the same area as a .61, and functions in practically the exact same rpm band...so it is possible to upgrade immediately, and straight away enjoy additional muscle for 3D flying and FAI F3C competition.

Specifically developed to fulfill the performance demands of FAI F3C competition pilots.

Throttle set up guide marks allow it to be an easy task to note and restore finely tuned settings after maintenance.

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

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

Three-needle carburetor allows exceptionally exact adjustments.

Big helicopter cylinder mind provides good air conditioning fin area?Xincreased webbing regarding crankcase front side improves heat dissipation even further.

SPECIFICATIONS

• Inventory 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 weight w/o Muffler: 19.5 oz (553.5 g)
• Requires: Muffler & gas