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  1. #1
    Senior Member datlas's Avatar
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    shimano hyperglide chain

    I tried a search on this topic, with no luck.

    I need to replace my chain soon...my drivetrain is dura ace 7400 6 speed freewheel.

    I have seen hyperglide HG models with various numbers after them. I imagine the higher the number, the thinner the chain...to work with the narrower cluster. But what's the real difference, and which one would work best with my standard-6 speed spacing? I am guessing I want the HG-50 but not sure.

    Doug
    1986 Alpine

  2. #2
    Senior Member miamijim's Avatar
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    Doug, the numbers refer to the model of the chain not the thickness. Thickness is dictated by the number of speeds...10 speed chains are narrower then 8-speed chains. Any of the HG/IG 7/8 speed chains will work.

    50, 70 and 90 series chains differ in materials used.
    WWW.CYCLESPEUGEOT.COM 2005 Pinarello Dogma; 1991 Paramount PDG 70 Mtb; 1976? AD Vent Noir; 1989 LeMond Maillot Juane F&F; 1993? Basso GAP F&F; 1989 Terry Symmetry; 2003 Trek 4700 Mtb; 1983 Vitus 979

  3. #3
    Senior Member datlas's Avatar
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    Quote Originally Posted by miamijim View Post
    Doug, the numbers refer to the model of the chain not the thickness. Thickness is dictated by the number of speeds...10 speed chains are narrower then 8-speed chains. Any of the HG/IG 7/8 speed chains will work.

    50, 70 and 90 series chains differ in materials used.
    Jim,

    Thanks so much for the clarification!

    Doug

  4. #4
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    FWIIW, after doing some research, I decided on a SRAM PC-870 for about $16 (with Powerlink) for the rebuild of my old Trek 400 with 7-speed Shimano drivetrain.

    - Mark

  5. #5
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    I've had no problems running Sedis or Sram on my 7400

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