Quote:
Originally Posted by MetroMPG
Conditions were great late today, so I got out to the test route again.
Short story: 3% improvement @ 90 km/h / 56 mph
(Doing AAA-BBB-AAA where each A or B is a 2-way averaged run. So 18 individual runs. A = Kamm+Tail; B = naked rear end)
Compare that to the 2% change I saw last time.
So the revised tail appears to work better, but overall it's still not a very big difference vs. no rear end work. Don't get me wrong, though -- I'll happily take a 3% boost! I'm just surprised it wasn't more.
I'll post the final details & graphs & standard deviations sometime this weekend.
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Thanks for retesting. It makes sense that you'd get less benefit than say a lean burn capable Insight, but I would have guessed more than what you got. I wonder if it has something to do with where you're at on the bsfc map when aero is improved. Maybe your engine isn't getting the benefit we'd expect to see, because Honda has gone to great lengths to tune the car based on the known aerodynamic characteristics of the vehicle? A bit of a head scratcher...