|
first test results
Air dam is a no go!
The butt dyno had me convinced it was good, but the numbers said otherwise (AAA-BBB coastdown runs).
Let this be a lesson! The butt dyno is a cruel mistress that will tell you what you want to hear, not what you need to hear.
Tail is a go!
After wasting many hours trying to get decent, repeatable MPG results from the Prius on Sunday (it's a tempermental, sensitive pain in the butt dyno), I finally came up with an approach that seems to work. So I did a bunch of A-B-A at 85 km/h (52ish MPH) and saw a ~7% improvement.
This was without any undertray at the car-to-tail transition and I discovered a potential problem there that was probably dragging the results down.
I'd like to test it again, with the undertray & at a higher speed -- thinking 105 kph (65 mph).
Will report back with more details...
|