Originally Posted by
55/Rad
I run a standard Ultegra double. I found the whole situation to be pretty silly myself until I was informed on another forum that Trek has come out with a "compact drive" front derailleur bracket to specifically address this issue and that it can be ordered through Trek dealers.
Apparently, it's a standard bracket where the slot gap has been machined to travel a wider distance and range.
Theoretically, problem solved.
55/Rad
I'm resurrecting this old thread because I recently ordered a new FD bracket from Trek for my '07 Madone 5.0 based on this info. I was also trying to lower my FD so that it lined up with the top of a smaller-than-normal large chainring. I had already filed down my current bracket to allow a few more millimeters adjustment downwards, but this was not enough, so I was hoping that the new FD bracket would solve the problem.
Unfortunately, the new bracket is identical to the modification I had done to the bracket that I already had - it is just the standard bracket with the hole filed down lower. Therefore, I wouldn't recommend that anyone purchases one of these - just file down your current bracket yourself. When it comes time for me to buy another frame, it will have a standard-sized seat tube designed for a clamp-on front derailleur so that I can run whatever chainring sizes I want to.