Quote:
Originally Posted by Zach
In order to do the ABABA testing do you need something like a scan gauge? Would doing an entire tank of gas for each be good enough? I don't have any means to track MPG without dividing my miles driven by # of gallons filled at the pump.
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*Speaking in loose terms,a complete grille block might net a 12% drag reduction.
*A partial grille-block would only address the entry of the cooling system.
*6% of the drag, downstream of the radiator would not be addressed.
*You might be looking at a 3% drag reduction.
*If so, you could only be looking at a 1-1/2 % mpg improvement.
*It would be virtually impossible to detect this unless you had a fully-instrumented and documented test session on a closed course, back-to-back, within minutes of the original run.
*Some investigators at the Motor Industry Research Association wind tunnel in England claimed that in any given year, that they might see 7-days when weather conditions would be stable enough to do accurate outdoor testing.
*In the U.S.A., crosswind is considered the norm in all driving.(JPL,Pasadena,Calif.)