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  1. #1
    Senior Member daveed's Avatar
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    Which front derailer?

    Hello,
    Do I want a top swing or bottom swing front derailer? I can't tell which type I have now (Shimano C101). I ride a Trek 7300FX. (Rear derailer is Deore; upgraded crank is a Sugino triple.) I want to move up to a Deore LX.

    Also: does the diameter size make a difference? Mine is I think 1 3/8" or maybe 1 1/2". Thanks for your suggestions.

  2. #2
    Senior Member sydney's Avatar
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    Quote Originally Posted by daveed
    Hello,
    Do I want a top swing or bottom swing front derailer? I can't tell which type I have now (Shimano C101). I ride a Trek 7300FX. (Rear derailer is Deore; upgraded crank is a Sugino triple.) I want to move up to a Deore LX.

    Also: does the diameter size make a difference? Mine is I think 1 3/8" or maybe 1 1/2". Thanks for your suggestions.
    Seattube is 13/8" What's the chainring tooth sizes.Sheldon Brown at www.harriscyclery.com has explanation of top and bottom swing in Bike glossary. A deore LX WHAT?

  3. #3
    Senior Member daveed's Avatar
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    Thanks, Sydney. A Deore LX front derailer (at nashbar.com for 17.95). Chainrings 46/36/24. Why do the chainrings make a difference?

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