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Old 11-25-2007, 10:56 PM   #165 (permalink)
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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: 52.07 mpg (US)

Winter beater Metro - '00 Chevrolet Metro
90 day: 61.98 mpg (US)

Fancy Metro - '14 Mitsubishi Mirage top spec
90 day: 58.72 mpg (US)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
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11-07-2006, 02:44 Pm

Back to concerns about the strength/weakness of the custom coupler....

The thinnest diameter shaft in the chain isn't the tranny input shaft, it's the splined shaft welded on the end of the Lovejoy coupler that slots into the motor. Its neck is only about 2/3 the diameter of the input shaft. Compare (click = zoom):

Still, if the transmission shaft is 100% over-engineered, then we should be OK with 66% over-engineering

Actually I'm pretty sure shaft strength isn't linear with diameter, so the over-engineering probably doesn't scale like that.
Honda mods: Ecomodding my $800 Honda Fit 5-speed beater
Mitsu mods: Oops, I did it again! Bought another cheap, 3-cylinder Mirage. Mods in progress...
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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