Old 09-06-09, 06:17 AM
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karavshin
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Mixing Ultegra crankset with MTB shifting

My gearing is too low. The best solution is to convert the front crankset to a road style which offers a 53T ring.

Currently I have a Shimano SLX Hollowtech II crankset (44-32-22) + SLX FD + Deore LX 3spd flatbar shifter.

I'd like to replace the crankset with an Ultegra. Probably a 53-36. Another option might be a 3-ring Ultegra if I can find one.

Anyway, what I want to know is what i can/must do with the SLX FD and my Deore LX shifters.

Can the SLX FD properly shift on an Ultegra crankset (whether it's 2 or 3 rings)? If not, and I have to put a real road front derailleur on, will the Deore LX shifters be able to drive that derailleur? Or do I have to find some Road flat-bar shifters (uh oh).

If I have to use a road FD, the ultegra will be bottom-pull, when my bike is set up for top pull. I think I can solve that with the aid of a Speen "umlenker" adaptor. Has anyone used these? It sounds cleaner and easier than a pulley system.
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