Kettenschaltung: 6-, 7-, 8-, 9-, 10- oder 11-Gang?: Unterschied zwischen den Versionen

*Chain As you go to more sprockets on the cassette, you need a narrower chain. However, using a chain one size narrower than standard rarely presents any problem. Thus, you can use a "9-speed" chain with a 7-speed or 8-speed system, or a "10-speed" chain with a 9-speed system. This is not the ideal approach -- shifting may not be quite as smooth -- but it's workable.<br>Narrow chains bring other problems, though. They are usually more expensive and -- with 10 or more speeds -- don't last as long -- even when used in the intended system.<br>The narrowest chains also are more trouble to maintain. A master link, the SRAM PowerLink, makes it easy to disconnect a chain for cleaning. The 7/8 speed SRAM PowerLink works with SRAM and Shimano chains, probably others too. The 9-speed PowerLink works reliably with SRAM chains, but it may lead to a Shimano chain's jumping forward. The 10-speed SRAM Powerlock (note different name) is good for one-time use only: You must install a new one every time you reconnect the chain -- but then, if the chain has worn significantly, it will cause a "clunk" every time it comes around, because this one link is shorter than the others! Shimano's 9- and 10-speed system is even more trouble: you must press in a special link pin, using a special tool, every time you reconnect the chain, and this, too will cause a "clunk".

Within a given brand/style of rear derailer, all "speed numbers" are generally interchangeable. This applies to all indexable models, basically everything manufactured since the late 1980s. There are a few exceptions: