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Old 06-08-2020, 01:49 AM   #17 (permalink)
JulianEdgar
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With the pitot reference giving such stable readings, I was able to do a test on the Insight that with the previous sealed reservoir approach, was difficult/impossible. I used a 0-120 Pa Magnehelic gauge (ie 0-0.5 inches of water FSD - so very sensitive).

I placed the measuring puck on the bumper corner and recorded a two-way average of -30 Pa at 80 km/h.



I then added a large separation edge (always go large when testing - if it works, you can always go smaller.) Note that the measuring puck was not moved.

The pressure increased to -17 Pa (similar to the pressure previously recorded in the middle of the wake).



So the separation edge measurably and clearly reduced the vertical suction peak down the side of the bumper.
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