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Old 10-21-2009, 02:32 PM   #10 (permalink)
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Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
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Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 52.71 mpg (US)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
90 day: 70.75 mpg (US)

Appliance car - '14 Mitsubishi Mirage ES (base)
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Originally Posted by Bicycle Bob View Post
You may not need aluminum framing except as stiffeners. A bent coroplast corner is quite stiff.
Except there should be no corners on this boat tail. All the "sides" of the boat tail will be rounded (think: more of a cone than a pryamid, so will need some kind of framework to support the shape. Correction: there will be hard edges where the boat tail terminates at the "transom".

Christ: the chicken wire idea to support fabric is a good one. But I decided against fabric because chicken wire or the supporting "tent pole" framework to get the polygonal "resolution" I want will be as bulky for storage or as much work as doing coroplast surfaces, I think.

Anyway, here's all I have to show so far. Should have enough length here to go almost to a point if I want to take it that far. (But I don't plan a point - it'll have a flat rear surface to mount the lights/licence plate.

Project MPGiata! Mods for getting 50+ MPG from a 1990 Miata
Honda mods: Ecomodding my $800 Honda Fit 5-speed beater
Mitsu mods: 70 MPG in my ecomodded, dirt cheap, 3-cylinder Mirage.
Ecodriving test: Manual vs. automatic transmission MPG showdown

has launched a forum for the efficient new Mitsubishi Mirage - fuel efficiency info for Geo Metro owners - electric car conversion on a beer budget
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