Mechanical issues

Introduction Efficient speed control is crucial for a comfortable and enjoyable e-bike riding experience. This article presents an innovative solution for speed control through an ergonomically de...

Why is a special front fork for hub motor mounting needed? For DIY converting bicycles to ebikes, many hub motors are available. However, surprisingly, no suitable front forks exsist. Standard fro...

The huge friction problem of Shimano hub gears What many people don't know is that the Shimano Nexus 7 hub gear require a lot of extra pedaling energy, I have personally experienced this with...

Intro Bicycle speed measurement is generally done with a spoke magnet and a reed relay sensor. If this is done on the rear wheel, there is a large spacing between the spoke magnet and the chain st...

Featherweight bicycle rear carrier To reduce weight, I have built a featherweight bicycle rear carrier. The weight, without the 4 frame mounting bolts, is just 140g. The usable area is 370mm x 1...

Electric bicycles should turn off the motor during braking. Therefore, I have invented a method to build a switch into a brake lever; the brake lever doesn't have to be replaced and no external swi...