This is going to be ridiculous expensive, look at it controller every where, maintenance is going to be a nightmare,(reply>), Induction motors are very expensive. Would be cheaper to just use electric motor tractors to tow the lift capsule around. Power it with live rails. Might be a little more noisy though.,(reply>), Bruh you have just as much controllers in half-automated warehouse.,(reply>), If you want to talk about a maintenance nightmare consider an old relay logic elevator controller which has no computer components and instead is controlled by a series of cams, switches and rollers in the elevator shaft and a bank of hundreds of relays that control every individual function of the elevator. THAT is a maintenance nightmare. I've seen an elevator mechanic spend 4-5 hours daily for two weeks watching and testing relays on relay logic system from the 1970s to track down an intermittent problem causing the elevator to get stuck on the top floor.,(reply>), Vs a pulley and steel rope system where the latter can't withstand its own weight and the former is looking a bit dicey unless you build it extremely strong and maintain it rigorously? And can't have a cast iron guarantee of its position by rotating the switching module and ensuring that it maintains a constant height and horizontal position throughout at least a 90 degree turn? Yeah, OK, have fun.,(reply>), So you never saw the controllers of a modern elevator...