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 desire to accept time intensive mounting alterations and gearing alterations.
O.S. contains the reaction: the 70SZ-H. It installs in identical area as a .61, and functions in practically the identical rpm musical organization...so you can actually update right away, and straight away enjoy additional muscle mass for 3D flying and FAI F3C competition.

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

Throttle setup guide marks allow it to be a simple task to see and restore finely tuned settings after maintenance.

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

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

Three-needle carburetor permits acutely precise alterations.

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

REQUIREMENTS

• 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 fat w/o Muffler: 19.5 oz (553.5 g)
• Requires: Muffler & fuel