Double the speed of the standard motor

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Use this pulley in place of the standard pulley that comes with the CineSlider/Stealth/Philip Bloom motor mount kits.

With the Motor Speed Doubler Pulley installed, this will essentially double a motor's speed, however it will reduce the motor's torque by 50%.

For example, use this with a 500 Series Motor (516:1) and now you're 500 Series Motor will run as if it was a 200 Series motor (which is double the speed of the 500). Note that the torque of the motor is now reduced by 50%, which means it may not be able to lift and hold as much weight.

In the past, to get a full dynamic range of motor speeds, you would have had to purchase the 50, 100, 200 and 500 series of motors. Now, with the Speed Doubler Pulley, you can purchase the 100:1 and 500:1 motor and have the same dynamic range as if you had all four motors. (Excluding the 1000:1 motor)

This Motor Speed Doubler Pulley will work with any of our elektraDRIVE/CineDrive Motors (50, 100, 200, 500, 1000).

Compatible with:

  • CineSlider
  • Stealth Slider
  • Philip Bloom Pocket Dolly (must have motor mount and motor)
  • Note: NOT compatible with the Pocket Dolly, Pocket Dolly Motor Mount, Shuttle Pod or Shuttle Pod Mini.


Physical Weight0.23 kg (0.5 lb)
Dimensions3.8 x 3.8 x 4.4 cm (1.5" x 1.5" x 1.75")
Kessler Speed Doubler Pulley for Motors
RM Product #: