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Mechanical issues

Mechanical issues

DIY ergonomic thumb switch for e-bike throttle control and electronic gear-shifting

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...

Lightweight carbon rear rack for sport bicycles

I am looking for a business partner who can make this rear rack commercially successful. I have developed a new type of luggage rack that radically departs from existing solutions. The design u...

Why does the Shimano Nexus-7 has such a great friction?

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...

Robust long-distance Hall sensor - magnet pair for rear wheel speed measurement

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...

Shimano Deore XT brake lever switch with Hall effect sensor

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...