Whats the real story behind rear derailleur compatibility with various cassette ranges, and why do manufacturers insist on making it so complicated? It seems like every time you turn around, theres a new standard or a new generation of derailleurs that supposedly cant work with certain cassettes. But is this really a technical limitation, or is it just a way to sell more gear?
Take Shimanos latest crop of 12-speed derailleurs, for example. They claim that these can only work with their own branded cassettes, but is this really true? What about SRAMs 12-speed cassettes - will they work with a Shimano derailleur, or is it a lost cause? And what about the so-called compatibility charts that manufacturers provide? Are these really accurate, or are they just a way to cover themselves in case someone tries to mix and match components?
Its also worth noting that many road cyclists seem to be under the impression that their derailleurs are somehow more delicate than those used by mountain bikers, and that they require more precise tuning and adjustment. But is this really the case, or is it just a myth perpetuated by the road cycling community? Do mountain bike derailleurs really have more wiggle room when it comes to cassette compatibility, or are they just as finicky as their road-going counterparts?
Ultimately, the question remains: whats the real story behind rear derailleur compatibility, and how can we wade through the hype and misinformation to get a clear understanding of what works and what doesnt?