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  1. #1
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    Ultegra 6700 shifter upgrade help

    Hello all ...

    I have a 2009 Fuji Team Pro with Ultegra 6600 shifters (Ultegra FD, RD, and brakes). I am quite happy with the performance and I only want to change the shifters so as to run the cables under the handlebar tape. Will upgrading to the 6700 STI levers solve this issue or will I have to change other parts of my drivetrain as well to ensure compatibility?

    Appreciate your help.

    Cheers,
    NP

  2. #2
    Senior Member datlas's Avatar
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    Should be compatible. But shift quality may actually be worse. If current ones work ok your money is better spent on other upgrades.
    Quote Originally Posted by RUOkie View Post
    never underestimate the idiocy of BF.

  3. #3
    bike whisperer Kimmo's Avatar
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    I believe there's a very slight difference in the actuation ratio of Shimano's two generations of 10s road derailers.

    I was sure there wasn't, but when a customer's 5700 bike came in needing a new RD, I went to throw on a 5800 one, and couldn't get it to shift nicely (the overall travel seemed roughly the same, but the indexing was off through the cassette).

    In the midst of my WTF, a colleague said he'd seen something in PDF somewhere mentioning the change (which is anything but common knowledge), and the bike had to have the older RD. Sure enough, when we got one in it worked perfectly.

    You could get the the later RD as well, but Shimano's 10s system is sketchy enough without having the extra friction of under-tape cables; those systems are even fussier. I'd advise Campy shifters with a Shiftmate (if you can still get one) or Campy RD - Shimano and Campy's 10s spacing is close enough to be compatible, and the Ultrashift (? I think; check with Drew Eckhardt in Mechanics) levers will work with any FD. Or you could go with SRAM, but there's no Shiftmate option and I'm not sure if a SRAM shifter will work a Shimano FD (never tried it).

  4. #4
    L-I-V-I-N dtrain's Avatar
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    ^ the slight difference in shift ratio is when going from 10 speed to 11 speed (105/Ult/DA). The 5800 RD you put on is 11sp. The ratios within 10sp (5600/6600/7800 up to 5700/6700/7900) are the same. The OP's system would shift fine with 6700 STI's and 6600 derailleurs. Though Shimano's early attempts at under the tape cable routing wasn't exactly a smooth upgrade (as both these posters have mentioned).

    However, the ratio in brake cable pull was slightly changed between 5600/6600/7800 (SLR) and 5700/6700/7900 (new super SLR). So ideally he'd want to change the calipers as well...though I hear the difference is actually very small.
    "The older you do get, the more rules they're gonna try to get you to follow. You just gotta keep livin', man, L-I-V-I-N." - Wooderson

    '14 carbon Synapse - '12 CAAD 10 5 - '99 Gary Fisher Big Sur

  5. #5
    bike whisperer Kimmo's Avatar
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    Quote Originally Posted by dtrain View Post
    ^ the slight difference in shift ratio is when going from 10 speed to 11 speed (105/Ult/DA). The 5800 RD you put on is 11sp.
    Oops, I meant 5600/5700. Both RDs were 10s.

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