Originally Posted by
norskagent
My compact is 48/34, hopefully not so much to matter.
The correct answer is that you may or may not have a problem going to a 48.
That's getting quite a bit smaller than a 52/53, which is generally where the braze-ons were centered. However, that positioning assumed a front derailleur "drop" so the derailleur that you use may be a factor also.
Try it and see (is the only way to determine whether it will work or not...).