The Traffic Accident Reconstruction Origin -ARnews-

Re: Motorcycle crash

Ed Phillips ([email protected])
Mon, 22 Mar 1999 18:44:27 -0500 (EST)

Isn't gyroscopic precession a fascinating phenomenon? I've seen this dynamic too on m/c testing where the wheels build up their angular momentum and the test m/c rolls away instead of falling over. Can you determine there was no mechanical "failure" that caused the m/c to accelerate? If you can rule that out, and you know the slope, you can get an accelerometer and measure the rolling resistance of a similar m/c, and see what contribution in energy it supplies over that distance. Ignoring it will result in a "minimum speed" computation, how minimum depends on the energy loss attributable to the rolling resistance.

Ed
Ed Phillips
[email protected]

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