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bike tuning

Sorry for not posting much in a lot time now. I’ll try to keep up my work here again.

After having so much fun with my bike in China, I decided to tune my bike in Germany too. First of all, I needed some security. Unlike in China, driving around in your bike can be quite dangerous. Not because of the traffic, but because of your speed. In China, it’s usually too crowded to even drive faster than 20 mph (30 kmh) as a car, so bike will be around 6 mph (10 kmh). Higher speed is not recommended in China because most bikes don’t have the brakes to get you stopped fast enough. You won’t have the opportunity to drive that fast anyway because 99% of all bikes drive at 6 mph. But in Germany, my average bike speed is around 16 mph (26 kmh) on almost empty roads with top speeds around 26 mph (42 kmh) or even higher downhill. It often happens that you will have to fully brake sometime because some kid’s ball roll on the road. Just like a car, you have to brake really fast. But my rear brakes were pretty down, so I needed new brakes. I bought me a V-Brake by Promax for € 9.95. Now, after I was able to brake, I concentrated on the next problem: Lights. In Germany, you are only allowed to drive your bike on the road if you have a full dynamo based lighting system. Meaning in detail at least:

  • A dynamo
  • Two yellow reflectors on each wheel
  • One white front reflector at the front
  • Two red reflectors at the back
  • One Front light with 10 Lux
  • One Back light with parking light function (Lights on even after your bike stopped)

Well, I didn’t have dynamo nor dynamo light. Why? Because I hate those ugly thingies making so much noise when they are on. I only had a battery based lighting system. So how to upgrade to an dynamo system without having those noises? The solution is easy, but expensive: hub dynamo. Changing your hub means you have to change your spokes too. I got a complete front wheel for € 40.00 on eBay with a hub dynamo from Shimano (DH-3N40) plus front light with sensor function for € 13.00 and rear light with parking light function for € 8.00 plus shipping for all of those items. So now I have my full dynamo based lighting system. It even turns itself on and off automatically depending on the lighting condition outside.

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