BRUSHLESS DR. SPEED13,5T star Graupner 97273 With the new BRUSHLESS Dr. SPEED motors GM-Racing has succeeded in developing highly efficient motors which set new standards in terms of reliability and power.
Multiple extra-thick windings together with extremely low-loss construction and sintered neodymium magnets for enormous power and high efficiency
A thicker shaft ensures more accurate true-running of the magnets
Cooling openingsmaintain favourable motor temperatures even under ultra-harsh competition conditions
BRUSHLESS Dr. SPEED motors feature sensors and a sensor connector, and can therefore be operated with GM-Genius speed controllers with and without sensors. This means that the annoying sensor leads can be eliminated for even higher reliability
Variable sensor timing
High-performance ballraces for high revuluttions
The motors comply with DMC rules and EFRA rules. Nominal voltage: 7.2 V
Operating voltage range: 4.8 ... 12 V
Revs. / Volt (kV) approx. 3000
Winding count: 13.5T star winding
Current drain at max. efficiency approx. @ 7.2 V: 20 A
Current drain at max. power approx. @ 7.2 V: 70 A
Max. power at 7.2 V: 280 W
Max. power at 6 V: 205 W
Max. power at 4.8 V: 140 W
Permissible motor direction: R and L
No. of poles: 2
Overall length approx. 70 mm
Case length approx. 52.5 mm
Diameter approx. 35.8 mm
Free shaft length approx. 15 mm
Shaft diameter at output approx. 3.175 mm
Weight approx. 180 g
Recommended reduction ratio with six cells: 1:10 model cars, TW 1:3.5 - 1:5.5, Off Road 1:6.5 - 1:9
Recommended speed controllers: GM-GENIUS 50. GM-GENIUS 80. GM-GENIUS SPORT 80R
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