This is by now a dead thread I guess, based on the last posting date. However, I have a couple comments.........
While the test methodology was decent, why only test at 55 mph? Is that the speed you regular thread contributers drive? How about at say... 75 mph.
Secondly, you tested a vehicle that already was good for 33 mpg. Obviously not to many aerodynamic issues to begin with.
I wandered in here looking to improve the lousy mileage that I get with my Tundra; which is currently getting around 14 mpg.
I have read quite a bit of another thread regarding the streamlined toppers that several have made. I have seen some mention of approaches such as Kamm back but little or no mention of the Coanda effect for example.
Most of your efforts seem like a throwback to the 1930's and the streamlining teardrop efforts of that era.
You have not done anything to convince me that the Airtab approach is without merit. I guess that I may actually risk some of my own precious resources to find out for myself.
I think that many of you are close to engaging in pack mentality at this point, having so much time and effort invested in one particular approach that incidentally seems to greatly detract from the functionality that led to the purchase of a pick-up truck in the first place.
There. How was that for my first introductory post? Kind of like a fart in church I suppose.
Cheers!
