Homemade GENERATOR GEARBOX | power almost any usb device.
12:36
Building a Generator
13:50
Building an Electric Bike Without Electronics
11:59
60 speed manual transmission
18:00
Which 3D Printed Gear is Best?
8:14
Can we reach the Speed of Sound with Lego? 767 MPH Tip Speed! 4k
19:00
ROCKET that LITERALLY BURNS WATER as FUEL
4:20
World's biggest gear ratio...
15:09