View Single Post
Old 12-05-2019, 01:21 PM   #1 (permalink)
Master EcoModder
Ecky's Avatar
Join Date: Dec 2011
Location: Vermont
Posts: 3,964

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)
Thanks: 1,724
Thanked 1,681 Times in 1,072 Posts
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.

  Reply With Quote
The Following User Says Thank You to Ecky For This Useful Post:
mort (12-05-2019)