The RM-85FSi is a new 4-stroke gasoline engine, that distinguishes itself through good quietness, high torque and high processing-quality.

The motor can be used in any model aircrafts. Scale and Semi-Scale model builder has waited a long time for this 4 stroke engine.

Main data:
Cubic capacity: 85,0cm³
Bore: 39,5 mm
RPM-range: 1000 - 5800 rpm
Weight: ca. 3400g (with 2 ignition, manifolds and Air Intake)
Crankshaft: 4 ball-beerings
Piston rod: 4 × Needle Bearing
Props: 25x10", 25x12", 26x10" or 26x12" 2-bladed or 24x10" to 24x12" 3-bladed
Gasoline: regular petrol/Synth.Oel 1:40
2 processor-controlled ignition / autom. ignition point adjustment
Supply voltage ignition: 4,8 - 9,0 V