12:58

Super Capacitor Bike

20:31

Spain is Living in 2050? Revolutionary 1 Stroke INNengine Analyzed

12:50

Are Chainless String Drive Bicycles a Genius or Terrible Idea?

13:42

This Car Travels Farther Than You Push It

5:30

3D Printed belt bike conversion

13:54

Making Another Magnetic Gearbox (but with high torque)

15:13

Adam Savage vs The "Perpetual Motion" Machine!

14:49

Flywheel Battery