Originally Posted by DocRay
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.
Doc...I have two bike both compacts. One had a reg drl calmp on and the other has a braz on with a compact fsa fd...both bikes shift fine.
with the bolt patterns a compact can be 53/39, 50/36, or 50/34
look...
http://www.bikeusa.com/components/chainrings.html if this is hype...plz I want more
the other thing...the "real" stand. double was a 52/42 for years, then it went 53/39, that 53/39 is a normalized compact crank...
it may be that as the cogs in back get smaller so will our front rings and your manhood will be threatened even more...