Elbow Torque Meter

Designs are getting sophisticated enough at Super-Releaser that it’s time to gather some data. One of our designs, an inflatable arm cuff, needs to move about 20 foot pounds (or pound foots) of torque to be able to overcome the spastic muscle contractions it’s expected to experience.


Since the force of the elbow cuff is distributed along the bones of the arm, torque needs to be measured with a meter that pretty closely resembles an arm. I went through a quick and dirty iteration (below) before spending the time to print the one featured up top. The soft cuff below is the version Kari Love stitched together.


So far the cuff seems to be outputting about 3-4 ft/lbs of torque, which is promising for what’s more-or-less a first iteration of the concept.