Originally Posted by squeegy200
A noteworthy fact. I was surprised when I saw this on one of the websites. I think it was published on their website.
you don't need a website, just divide. 50*11=4.54:1, 53*12=4.41:1, 53*11=4.8:1, 54*11=4.9:1
The other problem with switching to compact is that you need a new front deraileur, and some bikes, like mine, used a welded boss that doesn't reach that low. ...then there' s the complaints all over about after the change, they have shifting problems, a lot more hassle than just choosing my 11-23, 12-25, or 13 -29 cassette.