Originally Posted by
Iride01
Shimano give their suggested chain sizing for it's components in most every service instruction or dealers manual for every model line I've ever looked at. ..........Anyway, even for an engineer, I'd think you want to look at what the manufacturer recommends. And many do. SRAM and others don't make it as easy to find as Shimano does, IMO. But when I search hard on their site for it, I can usually come up with it.
One more time. The manufacturer's recommendations are based on your staying within their published limits for all parameters like max and min cog sizes, chainring sizes and total teeth. If you go outside their limits, you better be willing to adjust as needed.