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  1. #1
    Senior Member FR4NCH1SE's Avatar
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    Noob Question about Rear Derailler Swapping

    Hey Guys, I have a road bike that is a 7 speed freewheel in the back, and I had a question, let say I want to upgrade the rear derailler to something in the higher end Shimano, instead of the 2200 on the bike right now, I want to put Tiagra and above.

    I was wondering if I would run in any problems? I assume that high end rear deraillers like tiagra and above only take 8+ speed cassettes. This is where the noob in me starts, I dont know the specifics of this. Are there Rear Deraillers of Tiagra that work on 7 speeds or are they universal?? Sorry I am a big time noob at this stuff, but I am reading a bike mechanic book as we speak.

    Please help.
    "Every Man Dies, Not Every Man Really Lives".

  2. #2
    Elitist Troglodyte DMF's Avatar
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    Any road derailleur will work.

    But why replace it? I'd guess you're having shifting problems?
    Stupidity got us into this mess - why can't it get us out?

    - Will Rogers

  3. #3
    Senior Member FR4NCH1SE's Avatar
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    Quote Originally Posted by DMF View Post
    Any road derailleur will work.

    But why replace it? I'd guess you're having shifting problems?
    Performance, Hello!! And durability, the Derailler I have now is made of plastic.
    "Every Man Dies, Not Every Man Really Lives".

  4. #4
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    Even if the rear derailleur says 8 speed on it you can still use it on a 7 speed freewheel. You will just have to set the low and high stop settings on the derailleur so that it is limited to 7 speeds.

  5. #5
    Elitist Troglodyte DMF's Avatar
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    Quote Originally Posted by FR4NCH1SE View Post
    Performance, Hello!! And durability, the Derailler I have now is made of plastic.
    Performance? What performance? You think a new RD will somehow make you faster?

    Don't worry about plastic. The RD is one of the least stressed components on a bike. If it ever does fall apart, replace it then.
    Stupidity got us into this mess - why can't it get us out?

    - Will Rogers

  6. #6
    Bianchi Goddess Bianchigirll's Avatar
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    Quote Originally Posted by DMF View Post
    Performance? What performance? You think a new RD will somehow make you faster?

    Don't worry about plastic. The RD is one of the least stressed components on a bike. If it ever does fall apart, replace it then.

    I agree if you are a noob upgradeing the shifter just for the sake of upgrading will not make a noticable difference. for short money better tires may make a difference but just save your money and then get higher level bike off Cl or from a local flipper.
    Bianchis '87 Sport SX, '90 Proto (2), '91 Boarala 'cross, '93 Project 3, '88 Trofeo, '86 Volpe, '89 Axis, '79 Mixte, '99 Mega Pro XL Ti, '97 Ti Megatube, , '90 something Vento 603,

    Others but still loved,; '80 RIGI, '80 Batavus Professional, '87 Cornelo, '86 Bertoni (sold), '09 Motobecane SS, '98 Hetchins M.O., '09 K2 Mainframe, '89 Trek 2000, '?? Jane Doe (still on the drawing board), '90ish Haro Escape

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