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Re: understeer/oversteer definition

On Fri, 12 Mar 1999 FBFISH@aol.com wrote:

> <<  The greater the vertical load, the 
>  higher the coefficient of friction the greater the slip angle. >>
> Group- I can not comment on the veracity of the above description. I do
> remember some Physics  however, and twice in the explanation it is mentioned
> that "the greater the vertical force, the greater the coefficient of friction"
> I think it is more proper to say that the greater the normal (vertical) force
> the greater the friction force. I suspect that the coefficient of friction
> between tire and road is not a constant or simple relation. On an

Coefficient of friction is a constant typically, although I suppose it 
could vary with tire design across the tread.

> instantaneous basis though normal force times coefficient of friction is what
> determines  the force of friction which is offsetting the centripetal force. I

Very good.  Friction "force" is correct, and "Centripetal" would please 
my physic profs much more than "centrifugal."  I forget the explanation.  
That sounds like something Gross could explain.

Graydon D. Stuckey
'91 V8 Quattro 5-speed