COMPACT 480 12 V Graupner 7715 GRAUPNER COMPACT BRUSHLESS motors.
A range of high-performance BRUSHLESS motors. The impressive feature of this series of power plants is their enormously high torque, and it is in direct-drive applications that they show their full power potential. GRAUPNER COMPACT motors are brushless external-rotor (out-runner) types, i.e. the outer motor jacket rotates and drives the motor shaft. This design principle resultsin ultra-compact electric motors capable of an outstanding performance without recourse to a gearbox. An additional advantage: the weight of GRAUPNER COMPACT motors is very low compared to that of conventional motors. Ultra-light GRAUPNER COMPACT motors with weights below 45 g, i.e. less than a SPEED 300 electric motor, and therefore an excellent choice for lightweight Depron or Styrofoam models. The preferred energy source is a 2-cell or 3-cell Li-Po pack. Nominal voltage 12 V
Operating voltage range 12 ... 19.2 V
No-load speed 11,100
Revs. / Volt 930
No. of winds 12
Current drain at max. efficiency* 15 ... 25 A
Maximum efficiency 88%
Permissible direction of rotation R and L
No. of poles 14
Overall length approx. 68 mm
Case length, excl. shaft 48 mm
Diameter approx. 35 mm
Free shaft length approx. 20 mm
Shaft diameter 5 mm
Weight approx. 151 g
Recommended propellers,Order No. 1335.30.15 12-14.4V or 1335.28.15 14.4 ... 19.2V
Propeller adaptor 7690.5
Flex-hub -
Motor mount*** 1741
All-up weight approx. 1500 g
Recommended speed controller Compact Control 40 2884 or Genius 40 2896
* Referred to operating voltage range. These values reflect the current state of technology, and may vary in the course of continued development.
Differences may occur according to the speed controller used.
** with press-fitted pinion.
*** especially for power models.
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