this post was submitted on 10 Nov 2023
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Fuck Cars

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[โ€“] glibg10b@lemmy.ml 4 points 1 year ago (1 children)

I was gonna argue that rolling resistance doesn't have a large impact on efficiency, but apparently I was wrong

https://en.m.wikipedia.org/wiki/Rolling_resistance

An example of a very light high-speed passenger train is the N700 Series Shinkansen, which weighs 715 tonnes and carries 1323 passengers, resulting in a per-passenger weight of about half a tonne. This lighter weight per passenger, combined with the lower rolling resistance of steel wheels on steel rail means that an N700 Shinkansen is much more energy efficient than a typical automobile.

[โ€“] Tak@lemmy.ml 2 points 1 year ago

It's really counter intuitive to how we think of rolling resistance.

https://piped.video/watch?v=tfA0ftgWI7U

This video helped explain to me how the material the wheels are made of does impact the rolling resistance because the wheel deforms.