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The ROTO 85 FS-NG engine is a 4-stroke flathead gasoline engine specially designed for model aircraft up to 3.60 m and 20 kg.
The sound of this engine is enhanced by this crankshaft design specially made for use in World War II fighter aircraft.
The long-awaited increase in engine power, by changing the camshaft timing, is also a big change. Another new feature is the use of two carburetors, which take over the separate filling of the cylinders.
Downloadable manual below:
Technical specifications :
Recommended propeller
Two-blade: 25-26/10
Three-blade: 24/10-12