Any 53/34 successes?

Discussion in 'Cycling Equipment' started by Peter Hsing, Aug 13, 2011.

  1. Peter Hsing

    Peter Hsing New Member

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    I'm trying out a setup w/Rotor Q-Rings 53/34 and my bike mechanic is spent a lot of time trying to get it to work (DA 7800/7900 hybrid). The only times it works when shifting to the big ring--and it works only sometimes--is when I'm on the 28 of my rear cassette @ v high cadence. No rhyme or reason that I can make out.

    Anyone else have any success setting up 53/34s?
     
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  2. swampy1970

    swampy1970 Well-Known Member

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    I've done 52 regular with a 34 rotor - using a standard 7900 front mech. The trick is using a 7800 series chain. For some reason I could never get really smooth shifts with rotor rings with the 7900. 50/34 ( both rotor ) works better with the 7800 chain too. Having the front mech a few mm higher than the ~3mm norm helps too.
     
  3. Peter Hsing

    Peter Hsing New Member

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    Thanks--I will try w/7800 chain. Do you think a round 34 Rotor would make a difference in shifting, too (guessing that the 34 Q-Ring isn't that impactful)?
     
  4. Eichers

    Eichers New Member

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    Quote:
    Originally Posted by swampy1970 .
    ... The trick is using a 7800 series chain. For some reason I could never get really smooth shifts with rotor rings with the 7900. 50/34 ( both rotor ) works better with the 7800 chain too. Having the front mech a few mm higher than the ~3mm norm helps too.

    Hi Peter, what does DA 7800/7900 hybrid mean ... ie. does it mean 7800 STI and 7900 FD ???

    Hi swampy1970, I am definitely going to give the 7800 chain a go. The one I had was a little short, so I will have to get another one :)
     
  5. Peter Hsing

    Peter Hsing New Member

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    @KLabs: My setup is basically DA7800 shifters, FD; DA7900 chain, RD, 11-28 cassette. Going to try the old 7800 chain when I get around to it
     
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