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  1. #1
    Senior Member Plow13's Avatar
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    double single speed

    so if i got the dos eno freewheel of 17-19 teeth...I have an old ultegra 6500 crankset (53-39), could i take off the front ring and put on a smaller ring and use it in conjunction with the dos eno freewhell? If so, what is the biggest chain ring i could use on the outer?
    Cervelo S1 2010 (road) Lemond Alpe d'Huez 2004 (road)
    Trek 4500 2006 (mtb) Gary Fischer Utopia 2008 (commuter)
    Redline Conquest 2009 (cross) Redline 925 2009 (single speed)

  2. #2
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    55 tooth seems to be the biggest I can find, though I seem to recall seeing a 56 tooth before. FYI, those big rings do not come cheap: http://www.universalcycles.com/shopp...&category=2629

    Re-reading your post, it's unclear if you want to know what's the biggest or smallest ring that will fit your crankset. Smallest is a 38 tooth, limited by the 130mm bolt circle diameter.

  3. #3
    Senior Member Plow13's Avatar
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    i wanna know whats the biggest ring size i can use if i dont want to move the wheel...for example..i want to keep my 39t ring and use that with the 19t cog. so what size ring do i need to use the 17t cog? Do you have to have the same number of teeth or something? So...like 39-19 would be a total of 58teeth. so would it be 55teeth = (size of big ring) - 17tcog...so the big ring would be 41t?
    Cervelo S1 2010 (road) Lemond Alpe d'Huez 2004 (road)
    Trek 4500 2006 (mtb) Gary Fischer Utopia 2008 (commuter)
    Redline Conquest 2009 (cross) Redline 925 2009 (single speed)

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