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Old 07-28-2019, 03:18 PM   #10 (permalink)
Fat Charlie
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Join Date: May 2011
Location: Route 16
Posts: 3,420

Al the Third, year four - '13 Honda Fit Base
Team Honda
90 day: 42.9 mpg (US)
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Everything I know about aerodynamics I learned on Ecomodder.

To me a box cavity has always been a fast and dirty boat tail. Not perfect, probably not good looking, but effective. I've seen some graphics of pretty ones that just needed some skin to be real boat tails, but even one panel hanging out back coming close to the template is good.

I can't find the post, but this was on an early version of The Anal Probe:



The setups on the backs of 18 wheelers these days are a good example. Crappy boattails, but way better than the unmodded truck:



It's not pretty, it's not optimal. It's a box.
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Quote:
Originally Posted by sheepdog44 View Post
Transmission type Efficiency
Manual neutral engine off.100% @MPG <----- Fun Fact.
Manual 1:1 gear ratio .......98%
CVT belt ............................88%
Automatic .........................86%

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