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Old 05-05-2010, 03:12 PM   #12 (permalink)
MetroMPG
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Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,513

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)
90 day: 60.16 mpg (US)
Thanks: 4,058
Thanked 6,957 Times in 3,602 Posts
FYI, I'm a noob when it comes to propeller theory. I haven't read up on it yet.

But the prop on this Sail Drive is a 3 blade, 11 inch diameter, 9 inch pitch.

The gearcase has a 14:28 ratio. (Why didn't they say "1:2"?)

The maximum operating speed of the ICE is "3300-3700" RPM according to the manual.

ICE idle speed (in gear) is 600-700 RPM, and that's enough to move the boat along at about 2 knots (2.3 mph / 3.6 km/h).
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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



EcoModder
has launched a forum for the efficient new Mitsubishi Mirage
www.MetroMPG.com - fuel efficiency info for Geo Metro owners
www.ForkenSwift.com - electric car conversion on a beer budget
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