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Old 12-05-2019, 01:21 PM   #1 (permalink)
Ecky
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Join Date: Dec 2011
Location: Vermont
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Gaptooth (retired) - '00 Honda Insight
Team Honda
Gen-1 Insights
90 day: 54.26 mpg (US)

Such Fit - '07 Honda Fit Sport
90 day: 41.27 mpg (US)

Connect - '15 Ford Transit Connect XL
90 day: 25.19 mpg (US)

K-sight - '00 Honda K-sight
Team Honda
90 day: 45.06 mpg (US)
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Tallest displacement*gearing vehicle?

Today I was thinking about a fun, vaguely efficiency-oriented stat - displacement-gearing. To use my Insight as an example, the stock engine was a 1.0L with a 0.710 5th gear, 3.208 final drive and 0.57m (22.5in) diameter tires. We could use circumference too.

With the engine, smaller is better. With gears, smaller is better. With tires, larger is better. Liters and cm are arbitrary.

With these stats, the stock Insight was 1.0 x 0.71 x 3.208 / 0.57, giving a very arbitrary ~4.0 liter revolutions per meter (I think?).

With the 2.4L engine, I get 2.4 x 0.647 x 3.4 / 0.57, or 9.3 liter revolutions per meter.

I'm certain there are other factors we could add in, but what are some numbers for other vehicles? I'd like to see how various cars, trucks and especially motorcycles stack up.

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