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  1. #1
    Junior Member
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    Small geomtery differences: all else equal

    The 06 models are a bit cheaper than the 07-10, probably because they were a bit cheaper when new. The biggest difference is the frame materials and I'm wondering how much of a difference and premium that's worth. There are also some geometry differences and I'm wondering how differently the two frames will handle, since I can't ride either before purchase. The components are almost completely identical between the two. I have an 07 Sport now which is neither here nor there in terms of geometry and material. The 06 I'm looking at is a good $300 cheaper.

    06: A1 tubing, carbon fork with aluminum steerer.

    07-10: E5 tubing, all carbon fork, carbon rear stays.

    Geometry differences (other measurements are same),

    06 vs 07-10

    Wheelbase: 1037mm vs 1032mm
    Trail: 61mm vs 64mm (head-tube angle 72.5 vs 72)
    Chain-stay length: 450mm vs 440mm
    Front-Center: 597mm vs 601mm

    The longer chain-stays and wheelbase on the 06 indicate to me a slightly more stable ride, but the lower trail ad front-center indicate the opposite.
    Last edited by vinuneuro; 03-04-14 at 10:37 AM.

  2. #2
    Senior Member
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    IME, these kinds of very small differences are beyond the ability of even highly experienced riders to feel any difference. Throw away the tape measure and buy based on more meaningful differences, or toss a coin.
    FB
    Chain-L site

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  3. #3
    Senior Member
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    Quote Originally Posted by vinuneuro View Post
    The longer chain-stays and wheelbase on the 06 indicate to me a slightly more stable ride, but the lower trail ad front-center indicate the opposite.
    Maybe that was the point, to increase the wheelbase without sacrificing the existing handling characteristics. Hence the changes are offsetting.
    Robert

    "Wish I didn't know now what I didn't know then." (Bob Seger, "Against the Wind")

  4. #4
    Senior Member
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    I'm guessing that the 7 - 10 is significantly lighter. I would probably choose it.

  5. #5
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    Quote Originally Posted by Al1943 View Post
    I'm guessing that the 7 - 10 is significantly lighter. I would probably choose it.
    That seems right. Also explains the price differential after '06.
    Robert

    "Wish I didn't know now what I didn't know then." (Bob Seger, "Against the Wind")

  6. #6
    me have long head tube TallRider's Avatar
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    Quote Originally Posted by vinuneuro View Post
    06 vs 07-10

    Wheelbase: 1037mm vs 1032mm
    Trail: 61mm vs 64mm (head-tube angle 72.5 vs 72)
    Chain-stay length: 450mm vs 440mm

    The longer chain-stays and wheelbase on the 06 indicate to me a slightly more stable ride, but the lower trail ad front-center indicate the opposite.
    While the differences you describe are very slight, and unlikely to be noticeable even by experienced riders, it's worth noting that more trail doesn't necessarily mean more stable steering. Jan Heine of Bicycle Quarterly has started riding "mid-trail" bikes (discovered by accident, based on old French randonneering bikes). If I get a custom bike, I'll probably have around 45mm trail.

    http://janheine.wordpress.com/2011/0...-end-geometry/

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