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

Going the other direction, using wider chains with chainrings intended for narrower chains is not generally a major problem if there's only a one- or two- generation difference. The only problem you might run into is that the chain will be more liable to rub on the inside of the bigger chainrings in the small/small crossover gears, gears you shouldn't be using in any case.

When discussing cassettes, the terms "Road" and "Mountain" are marketing terms, not technical ones.

Cassettes come in various gear ranges, and the ones where the sizes are close together, with no really large sprockets, are commonly referred to in marketing-speak as "road" cassettes. Wide-range cassettes, with larger sprockets, are commonly called "mountain" or "MTB" cassettes.

Similarly, derailers come in long-, medium- and short-cage versions. Shimano designates them: SGS (long), GS (medium), and SS (short.) The short cage ("road") ones only work with narrow range ("road") cassettes, because they don't have enough capacity to take up chain slack for use with a wide-range cassette. Short- and medium- cage derailers are also limited in terms of the largest rear sprocket that they can clear without having the jockey pulley rub on the sprocket. Generally, SS & GS rear derailers won't work properly with rear sprockets larger than 30 teeth.

Long-cage (SGS) derailers have greater takeup capacity, and work with all types of cassettes. Long-cage derailers are commonly called "mountain" derailers currently, though in the past, this style of derailer was known as a "touring" derailer. (The marketeers retired the use of "touring" as a buzzword in the late '80s when mountain bikes became the hot item.)

While rear indexing is the same for all recent shifters/derailers, Shimano fronts use a different amount of cable pull for drop-bar vs flat-bar controls.

This makes it difficult if you want to use a "road" crankset, with full-sized chainrings (52, 53 top) with straight handlebars, or if you want to use a "mountain" crankset (42-48 tooth top) with drop-bar STI shifters.

There is no interchangeability issue between "Road" vs. "Mountain" cassettes and hubs as long as the number of sprockets matches.

==Siehe auch==

*[http://www.ctc.org.uk/cyclists-library/components/transmission-gears/derailleur-gears/shimergo#Shimano Shimergo, ein Artikel über Kompatibilität von Shimano mit anderen Schaltungskomponenten (englisch)]