How To Fix The Gears On A 21 Speed Bike. Thats why you must know how to index your bikes gears. Meaning the cable is out of.
If you are skipping gears and facing problems the indexing is to blame. Each gear of the bike relies heavily on the derailleur provided by the Shimano bicycle. Each speed on a bike refers to a different combination of gears.
I am often asked how to fix a bike that wont shift gears or will only shift to some gears.
For example if a bike has two chain rings in the front and eleven cogs in the cassette then you are working with a 21-speed bicycle. A multispeed bike allows you to comfortably ride at different speeds across varying terrain. However this doesnt mean you have 21 useable gears. Once you have managed to loosen the anchor you can take the next step.
