Should I be changing cassette to 12/27 for 650c wheels?
Hi Ladies,
I own a Cervelo P2 with 650c wheels. I wanted to ask if changing the cassette from 12/25 to 12/27 would make a big difference in IMLou (lots of rolling hills) course. Thanks for your help!
Yasko
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Comments
You can check out this gear ratio calculator It will tell you exactly how much of a difference the 27 will make.