Perfect links. Thanks. That is pretty much what I was thinking. Linear motors are terrific.
If you are interested in elevators...
You will enjoy this article.
An interesting read for most:
https://www.newyorker.com/magazine/2008/04/21/up-and-then-down
THE ROPE FREE ELEVATOR...
Cool stuff!
But would you want to live in a high rise apartment with one as your primary egress?
Way back when as a trainee I’d ask why not use the latest cool stuff?
Some senior crusty old guy would say “it hasn’t been proven”.
I’d mention, it has been approved Europe for years and many US states?
He would politely explain that proven and approved are not the same, and he was not going to put his name on it.
For example.
My wife and I have installed about a mile(feels like it) of O2 barrier PEX tubing for floor heat in our hundred-year-old house.
This product was widely used in Europe and Korea in the 1960s... some years later many failures.
They may have overlooked oxygen diffusion.
BIG PROBLEMS!
Then they added the oxygen barrier.
I hope it works because if not, my house would become a frozen teardown.