Quote:
Originally Posted by Vekke
First full tank results:
front bumber gain is 2-3 MPG. You can see the results also in my coast down tests. I have only done two coasts with new bumber and weather have not been the best. I will tell the results when I get more data...
If aerohead thinks thats shape is not the best, but maybe the gains come from smaller cooling openings.
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Automotive engineers would be required to perform immediate back-to-back coastdown tests ( 10 coastdowns with,10 coastdowns without ) on the same day,same track,and no significant weather changes.
This is one reason they've gone to wind tunnels,as they can "control" the "weather" inside.
Outdoor testing is very problematic,requiring extremely sensitive measuring equipment or long-distance testing compared to a representative baseline.
Any change to temperature or barometric pressure can skew results right off the charts.
The "racing" nose on my Honda allowed only a 0.5 mph increase to top speed in the 100-mph region.It would not have shown up at the gas pump.