OS MAX FS A-81 Graupner 2739

OS MAX FS A-81 mit Schalldämpfer Graupner 2739 OS SURPASS motors
OS has developed a new generation of four-stroke single-cylinder motors with the FS-SURPASS series. Their power in particular significantly exceeds the predecessor OS four-stroke motors of the same capacity.
13.26 cm³ capacity.
High-performance four-stroke motor, suitable for all types of model aircraft.

• Same quality, high performance and reliability, long service life
• Equipped with a 60RA carburettor that is easy to adjust
• With silencer

Specification
Width : 57 mm
Output (kW, PS): 0,96 (1,3) kW (PS)
Shaft thread: UNF-5/16-24
Distance of screw hole /longitudinal: 21 mm
Carburettor : 40A
All-up weight, approx.: 556 g
Height approx.: 97 mm
Diameter of fixing hole: 4,2 mm
rpm range, approx.: 2200 - 12000 U/min
Bore: 27,7 mm
Distance of screw hole / crosswise: 50 mm
Cylinder capacity: 13,26 cm³
Output (kW, PS) at: 11000 U/min
Recommended propeller: 13x7 - 14x7
Length to hub: 112 mm
Stroke: 22 mm
Shaft diameter: 7,8 mm