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Can this car really do 0-60 in 1.97s?

  1. Oct 15, 2004 #1
    http://www.fast-autos.net/lingenfelter/lingenfelter427tt.html [Broken]

    This magazine tested it and did 0-60 in 1.97s.

    http://co-project.lboro.ac.uk/users/cowy2/hostedstuff/lpe-8secVette.mov is a video of it.

    This is something a mate worked out, is it accurate?
    ----------------------------------------------------
    == Part 1 ==
    0-60mph in 1.97s
    Skid pad = 1.01g
    Curb weight = 33 401lbs = 1 514.99kg
    60mph = 96km/h = 26.7m/s

    v = u + at
    26.7 = 0 + a1.97
    a = 26.7/1.97 = 13.53m/s
    .'. 13.53/9.81 = 1.37g
    .'. Need 1.37g on skidpad to accelerate that fast.

    == Part 2 ==
    Assuming no mechanical losses from tyres and all wheels get 100% traction, coefficient of friction u (mew) (rubber to concrete) = 1 (dry).

    u = 1
    F = uN
    N = 1 514.99 * 9.81 = 14.86kN
    .'. F = 1 * 14.86 = 14.86kN

    .'. Force achieved from vehicle is 14.86kN.

    Force needed from vehicle to accelerate perfectly:
    F = ma
    F = 1 514.99 * 13.53
    F = 20.49kN

    Conclusion: Impossible, unless powered by jet engines!
    ------------------------------------------------------

    So anyone got any ideas?
     
    Last edited by a moderator: May 1, 2017
  2. jcsd
  3. Oct 15, 2004 #2

    NateTG

    User Avatar
    Science Advisor
    Homework Helper

    The skidpad test is apparently based on a 200ft circle laptime rather than linear acceleration. It's entirely possible (probable even) that a car has better forward/backward acceleration than lateral acceleration capability.
     
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