New answers tagged parts
If you have a modern bicycle, it's a cassette in English. And the tools are a chain whip and a lockout ring remover or cassette remover. With Chain Reaction and Wiggle it is possible to choose French for the language, even if you are in England (I do the opposite in France ;-) )
We have a terminology index here that should help you with the more common names. Please feel free to suggest anything that is missing (we do try to keep adding things that are missing) Unfortunately it doesn't currently have the things you're asking about. The part you've shown is a freewheel, and the tool is called a freewheel remover. You also need a ...
I went to take pictures of the BB installation as @Batman suggested. After removing the crank arm, I actually noticed an offset of 1-2 mm on the drive side, like @mattnz anticipated. However, I also noticed that there was a gap of about 1 mm between the frame and the BB lid: After this observation I googled a little bit, and learned from this forum thread ...
It's called a chain ring and, yes, it can be changed to whatever you want it. The dirt bike above has cranks which seem to use chainrings of type 104mm bcd 4-bolt. So any 104 bcd chainring will do the job. E.g: if it is small then that means you have to pedal a lot more to go faster That is correct, but usually those bikes have a very small cog at ...
There are people who are making custom parts for bicycles, also stems in particular. Whole bicycle frames as well. But it is a non trivial craft that takes time, practice and determination to master properly. Not to mention that failure of some parts can cause serious injuries, so tread carefully.
It depends. On a road bike you'll want them fairly tight to be able to ride on the hoods without the brake levers turning away or moving downward on the bar. On a mountain bike, at least the brake levers should be able to rotate away in case of a crash. But they still should be relatively tight such that they don't turn away while braking or because of ...
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