Cycling Equipment · Public discussion

Re: Winter Riding

Started by Tom Sherman · · Last activity · 1 post · 424 views

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Cycling Equipment
Published
28 December 2007
Last activity
28 December 2007
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Tom Sherman
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  1. Ken Roberts said:

    Assuming a coefficient of static friction of around 0.6, and a
    air-resistance coefficient of 0.172 for a rider and clothing and bicycle
    weighing a total of about 80kg (175lb), and assuming 70% of the weight is
    supported by the rear wheel, I get a
    maximum speed around 156 km/hr (97 mph)....

    Is the Cd of 0.172 realistic? I have seen values quoted from Cd=0.4 for
    an upright TT cyclist to Cd=0.9 for a rider on a upright "city" bike.

    The calculated Cd for the Varna Diablo [1] is in the range of about 0.06
    to 0.08.

    [1] <http://www.varnahandcycles.com/gallery/varna_diablo_01.jpg>.

    --
    Tom Sherman - Holstein-Friesland Bovinia
    POST FREE OR DIE!

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