ROTO motor 85 FS is two cylinder 4 stroke gasoline engine made specifically for the model airplanes up to 3.6 m (11.8’) and 20 kg (44,2 lb). These data are for recreational flying.

The Engine was developed in Europe with the assistance of CAD systems (Solidworks) and optimized for the liquid flow in the Flow software (made by Solidworks).

All ROTO engines and its components are made and programed by utilizing the state of art 5 axis machinery made by American companies HASS and Siemens NX.

Every engine, made by ROTO MOTOR Company is bench tested and adjusted by qualified technician on the Engine Star equipment to ensure its peak performance.

Basic technical data:

* DISPLACEMENT 85 ccm

* STATIC ENGINE THRUST 14 kg

* BORE 39,5 mm

* WEIGHT 2 790 g

* PISTON ROD 4 × NEEDLE BEARING

* CRANK SHAFT 3x BALL BEARING NSK

* INGNITION PROCESSOR CONTROLLED

* FUELGAS + OIL 1:40
Recommended oil Motul 800 or equivalent

* RPM 1200 - 6000 with propeller 25-27"