Keith,
Much too deep for me, I am just a simple guy...I hope to also be
measuring downforce/lift at each end of the car this year. That is, if I
ever get it back together again. I have a habit of losing parts, so who
knows?
Tom, Redding CA - #216 D/CC
Keith Turk wrote:
> Tom your answer is as good as any so far.... Don't know how accurate it
> is... but your dealing with real effects of making a change and comparing it
> to a known condition... bottom line is that your experience has given you
> the ability to control the handling effects of the car.... what we call
> that has little merit... the outcome obviously is exceptional.
>
> Here are my thoughts on doing this theoretically... My car has the ability
> to measure the actual downforce in pounds... can't do much with the side
> loading of the car but I can tell if the car is creating more or less
> downforce then before, and on which wheel (independantly) that happens.
> Since the downforce numbers increase with speed we can start to draw a graph
> of what happens as it increases in speed.... extrapolating out for increases
> in speed past where we are currently running. ( being careful to understand
> the coeffiecnet of traction occurs at some point )
>
> If we define the Center of pressure as being the point where lift and drag
> occur in a car, then ultimately that will change the wheel weights and like
> doing a Center of Gravity chart I can also determine the actual center of
> pressure less the side forces involved...
>
> What I know is that the current center of pressure is moving aft as the
> speed increases.... how far aft is still up for grabs... but it moves
> back... that much I know...
>
> Keith
|