A nice little Powerball trick

When running the powerball as active rest for the armwrestling competition. I accidently managed to do something odd with it. When attempting to switch rotation direction, the powerball seemed to get in free gear ! I decided to see if it was possible to do this on demand. Currently I manage to do it every now and then. Still the technique isn't consistently working. It don't make any harm to the powerball if you do it right.

Here is the trick captured on the webcam

After April 29th, the training will be focused to certify closing of the captains of crush #3. I hope it will be possible to do this in autumn. Strong grips and wrists aren't bad for the armwrestling. Thats why I put lot of focus on tools that can improve grip and wrist strength.