Originally Posted by TomCat_Ford
One other thing you need to consider is your front derailleur. Many have limitations with respect to the gap between the gears. For example, the derailleur on my MTB could not handle the gearing you want to use, as it is 2 teeth beyond what it was designed for (it could handle 26/38/48 but not 24/38/48).
Yes, this is something I had to replace anyhow. The one I've got for my 22-32-42 looks like it would fit a 50 - somehow my LBS managed to adjust it to work. In any case I plan on replacing that as well - although I was under the impression that the capacity on the front mech wasn't absolute (I think I read this at Sheldon Brown or maybe Crazy Guy). As long as the chain doesn't rub on the mech, one designed for 22T capacity should work as a 24. Here's a mech I was looking at:
So do these things sound compatible? The Alivio M430 and a replacement 24T granny as noted above, plus some 48T derailleur that has a 22 or 24 tooth capacity?
I will be switching to friction by the way, if that makes any difference. I don't have to worry about indexing and shifter issues between companies. It also means I can put most any components on the bike.
Last edited by sectrix; 08-20-12 at 12:01 PM.