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I recently purchased a Specialized Roubaix frame from a member of this forum. I intend to build it up with Ultegra 6800 and would like to run a 11-28 or 11-32 cassette. The fact is, I have no use for a 50-11 high gear. On another bike (with band-type front derailleur) I went with a cross crankset (46/34) and find that the 46T large ring is far more useful for me.

Before I order a cross crankset I'm curious if the slot in the braze-on will allow me to get the front derailleur low enough to run a 46T big ring. Anyone have experience with this?

Thanks.