So many derailleur hangers
#27
Senior Member
Not for me. Looking at gear calc, with the old 52/42 I had 5 duplicate gears. With my current 50/34 applied to that same road bike, I would only have 3 dupes, and would not have needed to upgrade to a triple when I moved to hill country. (Although that triple low ring, is still 50% higher gear than my current lowest, shows how much lower my gearing has gone, on 20" wheels with a 30 cog low. It's the higher gears where I lost a lot of range, but 85 is enough.)
#28
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Apologies for contributing to the recent veer off topic....
I've never understood why duplicate gears are a bad thing. That just means you can get the same gearing on either ring in some cases. Why is this bad?
I've never understood why duplicate gears are a bad thing. That just means you can get the same gearing on either ring in some cases. Why is this bad?
#29
Senior Member
Having said that, if you are very careful with 2X gearing selection, you don't get dupes per se, but instead differences of half-steps, no perfect dupes, if you want to be switching the front ring all the time. This was the idea with old 3X touring gearing "half-step plus granny", like 52/47 with a bailout low of like 30 or less. I actually have this on my road race bike because I needed a triple for hills where I relocated, swapped my 52/42 with it from a bike that I would sell.
Last edited by Duragrouch; 03-25-24 at 02:17 AM.
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#30
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It's mainly important when someone says "my bike has n gears" and 'n' is more gears than you have - you then inform them that actually they have fewer, because of all the duplicates.
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