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Old 05-01-10, 10:20 AM
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IGD
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Shimano 7900 Front Deraileur

I have recently aquired a BMC SLC 01 with Shimano 7900 groupo, incuding 50 / 34 Compact and 12 / 27 rear. Shimano, and many others claim that in the large chainring (50) one can use the complete cassette without chain rub on FD plates. Even though I know about the dreaded cross chaining, I cannot adjust to get no rubbing in 50 / 27 and 50/24 . I have followed Shmano install / adjust directions exactly, as well as other online sources and rechecked my methology several times.. no luck. Anyone out there with similar experience and / or suggestions? Thanks
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