The short-lived experiment of rubber tires on railways...http://www.ianvisits.co.uk/blog/2013/12/15/the-short-lived-experiment-with-rubber-tires-on-railways/
Phil...the man with the air compressor couldn't run fast enough to inflate the tires when they needed air.
Longevity = lower costs.
100+ton coal/ore carrier trucks used in the mines have tires that fit axles around 5ft off the ground. They cost a few thousand bucks each and have to be brought to the site on a low loader with a wide load escort. They are massive! ( I have a photo somewhere of my 5'11" cousin standing in the hub of one.)
Also, if you're thinking aha, the Saturn rocket trolley, lotsa littler wheels to hold the weight. How maneouverable is that thing again? Good on grades and bends is it? And how fast does it go?
Given that the railroad ones don't imply inflated tires, just a coating of rubber. How do you stick the rubber on? How long would the glue last on an ultra heavy ore wagon barreling along at 100kph for a full day on some runs, on a steel track you could fry an egg on? Which would disintegrate first? The glue or the rubber?
Tch, city folk.layful: