GRAUPNER SPEED 400 motor with Gunther 5 inch prop

SPEED 400 6 V Graupner 3321 The class SPEED 400 for model planes has been developed because of the excellent performances of these small E-motors. They are ideal for direct drive power systems of model planes

Specifications

Nominal voltage 6 V
Operating voltage range 2,4 … 7,2 V
No-load rpm 18000 min–1
No-load current drain 0,7 A
Current drain at max. efficiency 4 A
Current drain when stalled 25 A
Max. efficiency without gearbox 70 %
Length of case, excl. shaft 37,8 mm
Diameter 27,7 mm
Free shaft length 13,8 mm
Shaft diameter 2,3 mm
Weight 73 g