Talk about pedal power, the inertia welding machine requires just about a little of the human muscle. In this case, one needs just a few men, a bicycle, a car jack, a flywheel from the static steam engine and two aluminium sheets to join. to make an Inertia friction welding machine work. Pedal, pedal and lots of pedal for a few seconds at a speed of 400-450 rpm with a noise could shatter your ear drums. But all this is worth the result; joining of two aluminium sheets with the power of sheer human muscle.

The video is a must watch. The joy and excitement of the young boys who participated in Google’s Innovate or Die contest where contestants were asked to put pedalling power to some useful purpose. Participants were asked to make a video of their work and upload it on Youtube. On an earlier occasion, cyclists from MIT had tried to power a supercomputer from pedalling a bicycle.

Via: Bicycle Design157870