Car Aerodynamic Testing for Road and Track: How to test drag, lift and downforce with low-cost, accurate and easy techniques by Julian Edgar

Author:Julian Edgar [Edgar, Julian]
Language: eng
Format: azw3, epub
Publisher: UNKNOWN
Published: 2020-10-13T16:00:00+00:00

Pressures on the upper body of a Mazda RX7. In those days, manufacturers weren’t so interested in undercar pressures, but to reduce lift we certainly are!

If the Magnehelic gauge needle moves the wrong way, or the digital gauge shows positive pressures, swap the hoses to the measuring device. Note that most pressure you will measure are low pressures, that is, less than atmospheric (as for this example on the roof of the car).

Exceptions include at the stagnation zone at the very front of the car, at the base of the windscreen, and in front of rear spoilers – these pressures will be positive.

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