06-01-2013, 07:16 PM
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#161 (permalink)
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Batman Junior
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
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108!
I heart boat tails:
That's one way: secondary highway route, cruising at/near the limit of 80 km/h / 50 mph, going through 2 small cities, with lots of engine-off coasting to stops turns, plus speed zones through multiple small towns.
(Yes, I'm such a nerd that I'm posting my fuel economy from a cottage in the middle of the weekend... though in my defense, it's raining at the moment. We just beat the rain back to the dock!)
My previous best for this leg of the trip is high 90's, if memory serves. Will confirm when I get back.
EDIT: wrong - previous best was 103. See below for more details on best & average MPG for this trip which I've been taking for several years in the Insight.
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06-01-2013, 08:06 PM
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#162 (permalink)
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(:
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Shaweet!  |
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06-01-2013, 08:15 PM
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#163 (permalink)
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Gen II Prianista
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IIRC, with MPGe numbers like that you would have been an
X-Prize (Mainstream) contender.
But then, it would be difficult to spend the $5M (US) prize wisely.  |
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06-01-2013, 09:11 PM
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#164 (permalink)
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Master EcoModder
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06-01-2013, 09:51 PM
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#165 (permalink)
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Not Doug
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Awesome!  |
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06-02-2013, 10:17 AM
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#166 (permalink)
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Master EcoModder
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The X-Prize was for an EPA Combined rating of 100+MPG; which is considerably harder than the maximum. The Edison2 VLC X-Prize winner got 129MPG on the Highway rating, and at ideal speeds, it probably would be higher than that.
Go Darin, go!
Question: did you modify the sides of the boattail, after the tuft tests?
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06-02-2013, 04:15 PM
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#167 (permalink)
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Master EcoModder
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Great result and tail looks great. I wish I could build a tail for Berta...
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Gerhard Plattner: "The best attitude is to consider fuel saving a kind of sport. Everybody who has enough money for a strong car, can drive fast and hit the pedal. But saving fuel requires concentration, self-control and cleverness. It's a challenge with the nice effect of saving you money that you can use for other more important things."
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06-02-2013, 09:52 PM
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#168 (permalink)
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Batman Junior
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109
The car is practically making gasoline now, it's so efficient.
109.7 MPG (US) for the return trip.
I've kept tabs on my fuel economy for this trip because I make it a couple of times each year, and always on the same route.
Some stats from those numbers ...
- average: 95.8 mpg (US), round trip
- previous best, going: 103.0
- previous best, returning: 102.9
Quote:
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Question: did you modify the sides of the boattail, after the tuft tests?
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Nope, I didn't bother. |
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06-03-2013, 01:08 AM
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#169 (permalink)
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Master EcoModder
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Someone should do a car rally where they mimic the EPA Combined cycle, instead of a poker run.
Oh, and... |
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06-03-2013, 04:24 AM
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#170 (permalink)
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Master EcoModder
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Quote:
Originally Posted by MetroMPG
I suspect zigzag tape would only "work" where there's laminar flow. It's just too thin, and the boundary layer is way too thick and turbulent over most of the car -- and getting worse the further back you go.
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1 mm is definitely too thin at the rear of a car, but enough on the A-pillar.
Glider zig-zag tape is usually only half that thickness, so DIY would be the way to go for anything but the front.
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Strayed to the Dark Diesel Side
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