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Old 09-29-2017, 05:47 PM   #51 (permalink)
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I only have four 14" wheels that fit the car, so I had to do the 2 and 2 approach.

Good point about gear ratios: the 15's on the rear would have been spinning the diff/transmission 7.5% slower than the 14's. So, some of the apparent rolling advantage of the 15's was from decreased driveline drag.

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Old 09-29-2017, 05:53 PM   #52 (permalink)
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Blackfly - '98 Geo Metro
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Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
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More comments from strangers

Brief conversation today at a stoplight...



Guy in SUV: "Excuse me - what are those discs for on your wheels?"

Me: "What's your best guess?"

SUV: "Well, they say 'eco-something' on them, so I'm guessing wind resistance?"

Me: "Exactly."

SUV: "So they save gas?"

Me: "A tiny amount"

SUV: "Is it worth it?"

Me: "It all adds up!"

SUV: "Last question: are they expensive?"

Me: "Nope - I made 'em!"

The light changes and we part ways, and I'm wondering if he'll be trying to find "eco-something.com" on the interwebs later. I also wonder if he asked about price because he liked them?
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Latest mods test: 15 mods = 15% MPG improvement: A-B test, 2007 Honda Civic 1.8L, 5-speed
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Old 09-29-2017, 06:32 PM   #53 (permalink)
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Chorizo - '00 Honda Civic HX, baby! :D
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Did I miss where you made these specific wheel covers?
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Old 09-29-2017, 06:44 PM   #54 (permalink)
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It pays to advertise.
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Old 09-29-2017, 10:46 PM   #55 (permalink)
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Quote:
Originally Posted by MetroMPG View Post
Brief conversation today at a stoplight...

...

SUV: "Last question: are they expensive?"

Me: "Nope - I made 'em!"
They can't be any good...they're not expensive!
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Old 09-30-2017, 04:46 AM   #56 (permalink)
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Quote:
Originally Posted by MetroMPG View Post
...some of the apparent rolling advantage of the 15's was from decreased driveline drag.
thats why a 28´ bike rolls better than a 26´, less rounds for the bearing.
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Old 10-03-2017, 04:31 PM   #57 (permalink)
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C.a.d.

I've progressed from paper templates to Cardboard Aided Design for the fender skirt...



And I wonder what will happen first: get the cardboard skirts on, run out of good weather...
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__________________
Latest mods test: 15 mods = 15% MPG improvement: A-B test, 2007 Honda Civic 1.8L, 5-speed
Ecodriving test:
Manual vs. automatic transmission MPG showdown: Nissan Micra 1.6L



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Old 10-03-2017, 04:48 PM   #58 (permalink)
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90 day: 35.35 mpg (US)

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Mom's grandmamobile - '06 Toyota Camry SE
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Quote:
Originally Posted by Stubby79 View Post
They can't be any good...they're not expensive!
No, but they are one of a kind!
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Old 10-03-2017, 10:25 PM   #59 (permalink)
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Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 21,216

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 52.8 mpg (US)

Winter beater Metro - '00 Chevrolet Metro
90 day: 73.57 mpg (US)
Thanks: 2,976
Thanked 5,843 Times in 3,029 Posts
I wonder if he thought they were carbon fibre (because flat black)? CF = desireable!
__________________
Latest mods test: 15 mods = 15% MPG improvement: A-B test, 2007 Honda Civic 1.8L, 5-speed
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Manual vs. automatic transmission MPG showdown: Nissan Micra 1.6L



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Old 10-04-2017, 12:13 AM   #60 (permalink)
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Are you producing the bumper line straight down? What will the back edge look like?

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