Try searching for similar videos!

Pedal Powered Tennis Ball Launcher Drive Mechanism

by Engineerable
Closeup view of the drive mechanism for the pedal powered tennis ball launcher. Bike wheel turns on a bike hub. Bearing blocks made from bike headsets, with sprockets welded on. Shaft sits in a bushing made from a rubber cork to allow for axial mi...

Runtime: 00:46

From: icon Vimeo   URL: http://vimeo.com/8395948