Graupner OS SPEED 91 HZ-R 3C (2788)


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14.95 cc displacement
Twin-ballraced helicopter motor. Regulator needle adjustment possible by means of servo. For uniform fuel supply, a regulator is flanged to the carburettor.


Distance of screw hole /longitudinal 25 mm
Distance of screw hole / crosswise 52 mm
Diameter of fixing hole 4,2 mm
Width 61 mm
rpm range, approx. 2000 - 16500 U/min
All-up weight, approx. 603 g
Height approx. 79 mm
Stroke 24,8 mm
Cylinder capacity 14,9 cm³
Length to hub - mm
Overall length, approx. 116 mm
Output (kW, PS) at 3,6 PS bei 15500 U/min
Carburettor 61F
Shaft thread UNF 5/16"-24
Bore 27,7 mm