SpryDrive
​An Affordable, High-Torque Dynamic Actuator

  Ben Bokser's Portfolio
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    • Bipedal Robot with Impedance Control
    • SpryDrive
    • Bipedal Robot with Reaction Wheel Stabilization
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SpryDrive is an affordable actuator based on the quasi-direct drive (QDD) scheme. It is composed of a brushless outrunner motor, a low-cost metal gearbox, and a 3D-printed housing. Inspired by Gabrael Levine's OpenTorque actuator, but takes up less volume. The lower cost of the smaller bearing makes up for the added cost of the steel gears.

So far, I have tested an output torque of 33 Nm, but theoretically the actuator should be able to go much higher (in burst).
​

​Hackaday Page
Github Page
Specifications
Output Backlash: ~0.13 degree
​
Gear Ratio: 7:1
Motor: Herlea X8318S or Turnigy 9235
Picture
© 2016-2021 Benjamin Bokser | CC BY-NC 4.0
  • Projects
    • Bipedal Robot with Impedance Control
    • SpryDrive
    • Bipedal Robot with Reaction Wheel Stabilization
    • Soft Knee Exoskeleton
    • ASME SDC 2018
    • Hydraulically Actuated Robotic Arm
    • ToddlerCane
    • A Middleweight Combat Robot
    • Miscellaneous Extracurricular
    • Miscellaneous Academic
  • Publications
  • Blog
  • About
  • Contact