Howdy, NASCAR racers are aware of the aero disadvantages of the exhaust
exiting the side of the cars, but can't do much about it. One of the race
tech magazines (lets see now ,93-94 ? I forget the name/date right now)
had an article about aero on them and mentioned the drag from the exhaust
coming out the side of the car...and how it affects the airstream for
several feet along side and behind the cars.....there is a fair amount of
thrust coming from the engines, it could be used to an advantage......I've
thought about it, but didn't like the idea of the hot pipe running directly
through my chest.......drive careful
At 12:44 AM 7/2/01, you wrote:
>Am I missing something, with respect to the
>effect of fuel loss. I dont see 1-2 gallon fuel
>loss weight having an appreciable effect on
>traction, especially in contrast to the
>change in aerodynamic forces throughout the
>run.
>I can see the moveable weight transfer aid
>with respect to downforce changes, possibly.
>
>Anyone figured the force imparted by the exiting
>exhaust gas from a pipe? directing the exhaust
>straight up nets down force, but messes with the
>airstream, probably something to be had their
>I believe Vesco's turbine exhaust exits straight up
>netting downforce, not sure of the effect on his
>aero numbers
>
>Joe :)
John Robinson, Mechanician
Mechanical Engineering University of Wisconsin
1513 University Ave.
Madison, Wi. 53706
608-262-3606
FAX 608-265-2316
Current World Land Speed Record Holder
Bonneville Salt Flats
H/GCC 92 cu.in. 1980 Dodge Colt
131.333 MPH set 1995
136.666 MPH set 1996
140.292 MPH set 2000
144.396 MPH set 2000
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