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Re:Why did we wait so long for the bicycle? (2019) by Scoundreller on Monday December 07, 2020 @05:07PM (#25338304)
> Can't have bicycles without either a railroad

I know this isn’t where you’re going, but it would be awesome to have a system of bikes on rails with steel wheels.

About a quarter of the rolling resistance, but it is only ~11% of all resistance.

Braking and accelerating would become really fun, but wheels would last forever.

Re:Why did we wait so long for the bicycle? (2019) by jacquesm on Monday December 07, 2020 @05:19PM (#25338468)
Balancing would be tricky though, unless you have a third wheel contacting the rails and then you are actually spending a lot more energy.

https://ngdiscussion.net/phorum/file.php?1,file=16349,filena...

Re:Why did we wait so long for the bicycle? (2019) by Symbiote on Monday December 07, 2020 @05:17PM (#25338447)
There are a few places where you can rent or borrow a drasine and cycle on a railway.

https://en.wikipedia.org/wiki/Draisine