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  1. #1
    Geezer Clyde
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    Specialized Roubaix, Specialized Sirrus, Specialized StumpJumper, Giant Cypress,
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    Tire sizes for Dyad rims?

    I am currently designing a touring bike based on the Surly LHT frame and Velocity Dyad rims (48/40 spoke configurations). I am trying to determine what range of tire sizes I can use on the 700c Dyad rims.

    The Velocity site provides the outer rim width as 24 mm; does anyone know the inner rim width dimension as this will determine the range of tires sizes that fit?

    TIA for any info/advice - I'm hoping to order the parts for this bike from my LBS in a couple of weeks.
    Bicycle Commuting ROCKS!

  2. #2
    Senior Member
    Join Date
    May 2006
    Location
    San Diego
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    IF steel deluxe 29er tourer
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    Roughly 19mm. See bottom of this page:

    http://sheldonbrown.com/tire-sizing.html

    Answer: 28 to 44mm. I used a 1.85" 29er tire with no rim problems. Of course, you also need to consider what width of tire will comfortably fit your frame - especially the rear tire.....

  3. #3
    Geezer Clyde
    Join Date
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    Thanks - I had located Sheldon's sizing chart but could not find the inner rim width and Velocity did not respond.

    How did you find the 19mm value?
    Bicycle Commuting ROCKS!

  4. #4
    Senior Member
    Join Date
    May 2006
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    I measured it.

  5. #5
    Geezer Clyde
    Join Date
    Aug 2007
    Location
    Bristow, VA
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    Specialized Roubaix, Specialized Sirrus, Specialized StumpJumper, Giant Cypress,
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    Thanks - I appreciate you efforts Cyclesafe!!
    Bicycle Commuting ROCKS!

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