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2

Basically, so long as the front derailleur is wide enough to carry a 9 speed chain that you're using (so a 9 speed front derailleur would work) without problems, you'll be fine. So, go for it, provided they'll fit (i.e. the bolt pattern + BCD matches). As for mismatching the chainrings, chances are these are the cheapest ones on the market now. My road ...


4

There is a question here, it's just hidden in a misleading focus on details. How do you choose chainring setups? You need to analyze the gear ratios and speeds that you ride at and figure out the correct overlap for your riding. The way that I've found most useful to do this is to chart the gear ratios vs speed and use an error bar to represent the speed ...


0

For me the big advantages of the triple (eg 52/39/30) are: The two cogs 52 & 39 on the front for almost all riding - a classic double with ratios not too far apart, 39 ideal for rolling country. I never spin out on downhills unlike compact riders with their 50/34 30 on the front for very steep hills or when I am weary/totally knackered towards the end ...



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