The bikes stay upright because the tires fit snugly between the wooden slats. This DIY bike rack by @hamsterwheelbikerepair ...

The controller for the DIY motor was not capable of doing regenerative braking, so he fitted the capacitors to another e-bike that does ... [Tom]’s projects are a popular feature here on ...

A custom built alternator rotor is the key to the project ... To test out his handiwork, [DIY King] took to the streets and was able to get the bike up to 70 km/h (43 MPH) before his courage ...