Hi Wayne.

22-Feb-04 15:48:00, Wayne Chirnside wrote to Roy J. Tellason


  -=> ROY J. TELLASON wrote to TOM WALKER <=-

 RJT>> But that's _not_ what the speedometer said,  when I came to
 RJT>> rest.  It was *WAY* up there,  and thta's why I say that what
 RJT>> the car thinks was going on is nonsense,  and may or may not
 RJT>> have any bearing on the reality of the situation...

 WC> Somewhat similar situation. Entering Gulf BLVD in Madeira Beach
 WC> from a side street with a light rain my Cadillac fishtailed badly
 WC> though I was travelling but 5 - 10 MPH. Appears there must have
 WC> been oil on the road.

 WC> Speedometer ran WAY up on the scale there as well indicating
 WC> something like 55 - 60 about a second before the car got traction
 WC> and indicated something like 6 MPH. Never hit the brake as that's
 WC> the wrong thing to do in that situation.

:)
The wheels probably were doing a sufficient rotart speed for the car to
move at 55

the speedometer is typpically connected to the output shaft of the gearbox,
as such it indicates the speed that the driveing wheels are rotating at.

as soon as the drive wheels loose traction the speedo reading no longer
represents landspeed.

You can get the same effect (but less wear on the rubber) by lifting the
drive wheels off the ground and with the motor running putting the
transmission in gear :)

 -=> Bye <=-

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