Motors Choice

Vehicles > 1/6 Scale > Axis > Kettenkrad

GHM-04

7.2vdc

50:1

175rpm

6mmshaft

www.lynxmotion.com

As you can see the motor and gearbox is quite short, you do have to cut the encoder shaft off of the back of the motor.
Remove 5mm off of the end of the motor shaft (it's too long) then grind a flat on the shaft suitable to take the drive collets, at least 8mm long. I did all this with my Dremel with various grinding discs fitted. The models top speed is about walking pace which is quite acceptable. I purchased a pair of motors from www.activerobots.com

DON'T FORGET TO FIT SUPPRESSION CAPACITORS

SPECIFICATIONS
Type: HN-GH35GMB
Model: HN-GH7.2-2414T - 50:1

Rated Voltage: 7.2vdc
Voltage Operating Range: 6-7.2vdc
Rated Load at 7.2vdc: 1.0Kg-cm Do not exceed rated load. Damage may occur!
No Load Speed at 7.2vdc: 175 RPM+/- 10%
Speed at Rated Load (1.0Kg-cm): 146 RPM+/- 10%
No Load Current at 7.2vdc: < 221mA
Current at Rated Load (1.0Kg-cm): < 556mA

Data Sheet is available as a PDF here