MXL geometry specs
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  1. #1

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    MXL geometry specs

    Hello - Does anyone have detailed MXL geometry specs? Hoping to find larger frame size specs (HTA, rake, CS length, etc).

    Thanks!

    -Nate

  2. #2
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    Quote Originally Posted by nw60312
    Hello - Does anyone have detailed MXL geometry specs? Hoping to find larger frame size specs (HTA, rake, CS length, etc).

    Thanks!

    -Nate
    This is the best I've got after lots of searching...

    singlecross
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  3. #3
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    Quote Originally Posted by nw60312

    This is a Century Geometry chart for the Corsa Extra.




    Hello - Does anyone have detailed MXL geometry specs? Hoping to find larger frame size specs (HTA, rake, CS length, etc).

    Thanks!

    -Nate

  4. #4
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    That geometry chart is not correct, at least not for all MXLs. Apparently Merckx built them with some variations. My size 57 c-c has a 56.8 top tube, with a 72.5 seat tube angle -- and those measurements are pretty standard for most steel Merckx that I have seen in my size. Not sure about all of the other sizes in that chart, but the top tubes all seem longer than what I'm familiar with. Eg., virtually every size 56 Merckx I have seen also has a 56 top tube.

  5. #5
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  6. #6
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    MXL = Merckx MX Leader not Colnago Master Xtra Light

    Quote Originally Posted by Eyorerox
    MXL = Merckx MX Leader not Colnago Master Xtra Light

    singlecross
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  7. #7
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    After all, this is the Merckx forum ...

  8. #8
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    True, but in Eyorerox's defense there are some similar sounding bikes out there. Moser made a steel "AX Leader." When I first saw it, I thought for sure someone meant "Merckx" and just mistyped.

  9. #9
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    this little bit of info I came across may explain the long top-tube on merckx frames.

    For every 1deg increase in seat angle, you can subtract ~1cm of toptube, and for every 1deg decrease in seat angle, you can add ~ 1cm of top tube.

    So, if you ride a bike with a 73deg seat angle and a 57cm toptube, and it fits you, a bike with a 74deg seat angle and a 56cm toptube will fit roughly the same, assuming your saddle position in relation to the bottom bracket is set the same on both bikes.

    -so, the shallow seat tube angle makes for a more compact "cockpit" fit.

  10. #10
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    Here's the Merckx MXL Century Geometry (taken from Gitabikes) 2004 archive
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  11. #11
    em3
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    Quote Originally Posted by Pdxplosif
    For every 1deg increase in seat angle, you can subtract ~1cm of toptube, and for every 1deg decrease in seat angle, you can add ~ 1cm of top tube.
    .

    Pdxplosif, a friendly correction to what you indicate above...I think you simply stated your point in reverse order.

    Another way to look at is is to focus instead on REACH, the horizontal distance from center of BB measured along the TT to center of top of headtube, For example, a frame with a 56 TT and 74 degree seat tube angle (STA) will have approx. 1 cm longer reach, compared to a 56TT and 73 degree STAÖ.essentially making the reach on the 74 STA longer assuming your saddle setback (in relation to BB) is set at same length.

    I agree with other observations in your post.
    EM3

  12. #12
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    Agreed - somethings fishy. I know my 61cm MX has a 59.5 cm TT.

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