Accelerating and decelerating in line with gravity is a lot more forgiving on the occupants than lateral accelerations. Seems like this would put a big limit on horizontal movement.
ThyssenKrupp Multi – world’s first rope-free elevator [video]
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Re: ThyssenKrupp Multi – world’s first rope-free elevator [video]
#32My ideal elevator would accelerate at a pleasant 4 m/s^2 and have a jerk not exceeding 4 m/s^3. It would have doors that close instantly when the doorway is clear, and start right away.
That would be able to take me up a 100 yard high building in 11 seconds.
Why can't real elevators be like that? Why must the doors move slowly, and wait for 5 seconds before even starting moving? Why does the elevator reach a sluggish top speed, even with very little load? Why when arriving at the destination floor does it take a further 2 or 3 seconds for the door to open?
Re: ThyssenKrupp Multi – world’s first rope-free elevator [video]
#33I hate to be so cynical, but for how often the TK elevator in our building is out of service (these things have been around for 100 years and still break down more than a Fiat), I don't have the confidence necessary to step foot in this thing.
Sometimes you get cheap landlords who try to avoid paying for routine maintenance, so you get emergency shutdowns instead.
Re: ThyssenKrupp Multi – world’s first rope-free elevator [video]
#34So many negative comments for a Saturday. This is a marvel of engineering and deserves a celebration. Humbled by our ability to re-invent more and more. Well done to all involved.
Indeed! It reminds me of the root foundations of a TurboLift from Star Trek.
Re: ThyssenKrupp Multi – world’s first rope-free elevator [video]
#35what problem does this solve to justify the crazy expense, complexity and maintenance?
the reason elevators exist is because people cannot easily climb 100+ vertical ft, especially while carrying stuff.
on the other hand, humans are well adapted for horizontal travel - 15mi per day without breaking a sweat. and when they're not, there are movable walkways like in airports.
this whole thing is a solution looking for a problem, IMO. we don't yet live in Matrix-style human incubators with miles of horizontal travel in buildings that are also miles high - it's usually either/or, and not because we've been lacking these revolutionary elevators.
Re: ThyssenKrupp Multi – world’s first rope-free elevator [video]
#36This will be how we build towers twice as tall as existing megatowers.
As beautifully explained by xkcd[0], "If your building has lots of floors, you need lots of different elevators, since there would be so many people trying to come and go the same time. If you make a building too tall, the whole thing gets taken up by elevators and there's no space for regular rooms."
But if one elevator shaft can have multiple independent cars, suddenly you've got a huge capacity multiplier without the space costs.
The horizontal motion part is cute, but I don't think it will matter nearly as much.
Re: ThyssenKrupp Multi – world’s first rope-free elevator [video]
#37This is awesome! Hopefully this means the elevator can now directly open into my apartment!
Re: ThyssenKrupp Multi – world’s first rope-free elevator [video]
#38My ideal elevator would accelerate at a pleasant 4 m/s^2 and have a jerk not exceeding 4 m/s^3. It would have doors that close instantly when the doorway is clear, and start right away. That would be able to take me up a 100 yard high building in 11 seconds. Why can't real elevators be like that? Why must the doors move slowly, and wait for 5 seconds before even starting moving? Why does the elevator reach a sluggish…
I can think of three possible reasons why not, all equally likely:
1- no one has bothered.
2- it's been tried, something terrible happened and now they don't try it anymore.
3- it's been tried, but the extra cost doesn't cover the extra benefit. No one wants to pay for it.
All that said, I was at a hotel once that had, to my mind, perfect acceleration like you describe. No one else cared, but I was blown away by it.
Re: ThyssenKrupp Multi – world’s first rope-free elevator [video]
#39My ideal elevator would accelerate at a pleasant 4 m/s^2 and have a jerk not exceeding 4 m/s^3. It would have doors that close instantly when the doorway is clear, and start right away. That would be able to take me up a 100 yard high building in 11 seconds. Why can't real elevators be like that? Why must the doors move slowly, and wait for 5 seconds before even starting moving? Why does the elevator reach a sluggish…
People with reduced mobility or reduced vision will love instant closing guilliotines.
Re: ThyssenKrupp Multi – world’s first rope-free elevator [video]
#40There already are rope-free elevators, for instance: - the hydraulic elevator ( https://2.bp.blogspot.com/-lFWNDQDN2hE/T3nbR7woCAI/AAAAAAAAB... ) -the Paternoster ( http://www.audioguideportal.de/assets/Foto/thumbnail520x397/... ) The post title is just clickbait for a ThyssenKrupp commercial, plus it only shows animations of these new elevators. Yawn.
I'd rather not ride a paternoster --- seems quite likely to function as an execution machine :(
Nope. The first 25cm in front of the cabin opening are a flap, which means it will not shear your head off.