I watched a Ward Leonard set running an elevator and thought it was one of the most marvelous things I'd seen. To see that motor running at full speed then slow down to a slow crawl was amazing.
I had 4 of these, but the newer generation that used 1625 vacuum tubes for the directional circuit control LG, LJ XLG and XLJ and HS....and the diode matrix for the hall call circuits. PI plate selectors with the advancer motors.... The generators and the drive motors were absolute beasts... the controllers...maybe not so much, over 40 year career..hundreds of hours keeping it all running... I miss it. I enjoyed what I did and I think I was pretty dam good at it!
Would be great for young EE like me to read the diagrams and learn from the system. I'm sure that was quality engineering from days where every logic circuit costed much $$ and was too big
Type B MG sets and pie plate selectors! I still work on this type of equipment in LA! Still using the 2040 touch tubes in the car and still using the glass vacuum tubes at the top of the controller! Still has the original flyball governors! 👏👏👏👏👏👏
I used to work on a geared version on this unit in San Antonio. Ironclad units. I rarely had issues with it. They knew how to make things last back in the day, that’s for sure! Thanks for sharing.
Very nice and impressive old Gearless DC machinery. 175 volts, 141 amps when I read the type plate correctly - so, about 22 KW or 30 HP of power. Great! I love these old DC drives. Sad that this technology now is obsolete and more and more replaced by three-phase AC engines.
Worked on all of those machines over the years.Replaced field coils and white metal bearings on the gearless machines,comm skims and undercutting on site.Those Generators have exciters on the end which otis later modernised and removed.
True to a degree about the machines. Though incredibly built, those big gearless eventually need to get rewound.The good news is they do it onsite.Way too heavy to send out. We finally lost one about 80years old. The wire insulation deteriorates. You start getting hot spots on the commutator. They also start losing motor fields. DC drives too are becoming a thing of the past. Magnetek or the 12pulse MCE still work well. These days the AC gearless PM motors are the standard.
This video about the elevator and visit to its machinery room is fun to view.Reposted the link thru You Tube so more whom are interested about this can also view.Reposted YT link to facebook too.Enjoy viewing,this is fun!!!Thank You for telling its story!!!
If you want a complete controller, you might ask the modernization contractor if you could buy one of those being removed. Otherwise, they're just sold to a scrap metal dealer. There's a lot of copper in those old controllers and contractors may get as much as $50 a piece at the scrap metal yard.
Ive wanted one of the small ones with the old slate controller board, but yeah even the small are are insanely heavy! So all I have is a ball governor from one
what beautiful machines. This is honestly my true passion. I'm 21 but I want to get into the elevator business. I'm starting my electric class this semester. Please God help me study to become worthy of working for OTIS or another elevator company one day
It is built only using relays, but it functionality is very similar to modern elevators, powered by microcontrollers, inverters and other electronic stuff. Great machine!
Little walk down memory lane. I was an elevator consultant, later a safety inspector, for a couple of decades (I'm 73, retired) and I've been into many hundreds of buildings and inspected thousands of elevators, many like those Otis installations with Ward-Leonard & the relay-based controllers. I don't miss the 85 decibels of those m.g. sets or the kneeling on the carbon/dust floor to write my notes because a clip-board was a nuisance & there's hardly ever a table. Interesting electro-mechanical equipment though. Consultant's general recommendation: Refurbish Otis gearless machines, scrap everything else in the room. Use SCR. New door operators, fixtures, cab finishes. Refurbish hall/car door equipment & whatever's >60% worn (ropes etc.). But, as always, if somebody keen to get the work gives a great price for everything in the room being scrapped and A.C. gearless installed then likely go with that, a tidy package. If memory still serves.
At last I've found an excellent video to watch tonight - must have missed this one when you published it. Wow, amazing! Some things puzzle me though, mainly due to cost I suppose - Why Gearless in a relatively low rise building, and why do they have the more expensive "advancer" system (2:46) on the selector? Answer, for you to film :) but do you see what I mean? Most other buildings would have cut that out, unless the building was high rise and demanded these extra features. Glad you filmed the journey up to the motor room, always interesting so see just where they are and how to get to them - every building is different. EXCELLENT video!
mrmattandmrchay These elevators are definitely over designed for a low rise building. However I have seen hospital service elevators that run at 500 FPM. I believe these gearless machines are roped 2:1
These machines are roped 1:1 not 2:1. The speed of the lift car is the same as the speed of the ropes. There aren’t any rope hitches to be seen which would indicate 2:1 roping. There is double wrap traction. The ropes pass over the traction sheave twice, passing under a secondary sheave below the floor inbetween wraps. This allows the traction sheave to be made with grooves that are kinder to the ropes yet still have sufficient traction. These lifts are unusual for a relatively low rise building. The higher speed from the 1:1 roping and the advancer panel on the selector would be more appropriate for a much higher rise.
old technology, elevator, there's a way not done yet, no cables machine. Just detection once you put your weight in elevator or escalator by means of detection the machine will take you up, mechanical timing process in every step, weight is the switch .
That selector is an integral part of how the system works. If you wanted to keep the controller anywhere near ‘as is’ then the selector is vital. Anyway, why would you want to scrap such a well designed piece of engineering that’s good for years. The only problem is now the lack of engineers who know how they work to maintain them.
Сложнее сделать тогда было нельзя. Поворотный указатель этажей просто великолепен. Размер редуктора указывает что лифт может поднимать больше 1 тонны. А размер контроллера - может автоматически открывать двери, готовить пиццу, ловить радио, сообщать биржевые новости, и вызвать такси )))
I'm lucky I had the chance to work on the same type elevator in Bombay India at Hindustan lever Head office they had 3 of the same ones these generator had exiter for controllers to work D C volts was taken from the exiters and the fly ball governor the job is upgraded it was a master piece as per what I know never was the field coil short hats off for the workmanship and the manufactureing people of Europe.
It's funny to hear someone trying to explain what they have little clue about in an utterly confident tone. I've been there and done that many times before, too. 😂 Nice video, BTW.
Is it possible to get a machine room tour? I am super into mechanical stuff. I plan to major in Mechanical Engineering in college and work as an elevator service person.
Autotronics controllers where introduced by Otis in 1937 and touch buttons were introduced by Otis in 1948, today they just still running perfectly almost like the 1st day. This is why I hate new elevators and I love old ones.
@@Clement-xy9iv Elevator company sales engineer advised residential client to carry Capital Plan funding for 20-year elevator replacement (5 year old building). Probably right too. Throw out the cell phone & elevator. Get one with better iTunes
I hate to see these nodded! A question... What selectors are those? They look kinda different from the 6850? The pie plates are smaller and the frame looks different. I know WTC had some custom units but I'm not aware of what these are. Merry Christmas from northern Minnesota!!
***** I was wondering the same as the building is low rise, as to a gearless traction machine. Thus a compensating sheave on top of the elevator cab, slowing it down. Was the roping 2:1 with the counterweight also having a compensating sheave? Or just the hoist ropes on the cab one end anchored to the top of the shaft?
TheTheo58 I hope you don't mind me butting in here... if the compensating sheave is on top of the car, the ropes are bolted at the overhead, run through the cartop sheave, back through the overhead and through the gearless machine, and down again to the counterweight... in effect making the car travel half the distance the ropes travel. The equation ignores the counterweight side... since the car side is basically double-roped to the overhead (the bolt on one end and the machine on the other), the motion of the car is exactly 1/2 the speed... or the rope had to move 2:1 (rope motion:car motion). Northland Elevator's video of the Torrey Building doesn't show the sheaves but you can definately hear them. (I'm in that building often). I hope this helps. I got the feeling you were looking to put math/logic to how this process would work out. If I got too long-winded, I appologize.
An elevator lift room comprising a drive, an electric motor in an upright position, a brake, and a suspension element for providing vertical movement of the elevator chassis. www.sunny-lift.com/Traction-Elevator-System---Gearless-Elevator-Motor-For-Machine-Lift-630---2000-KG-SN-TMMY05.html
Sad to hear these elevators were being modernized...but that's progress. Pretty soon Otis touch buttons will become extinct. As it is they are getting very scarce.
I'll also add as a kid I was fascinated with Otis touch buttons...I was sure I was the only one. These videos are really cool. Thanks for posting them. Here was a time in American history where things were really built to last!
John Kinder The old fashioned systems are definitely fascinating, but being an elevator owner myself, I know they are not worth the cost of keeping in them in service. The new state of the art equipment is very reliable and they can run for years without a trouble call.
That is very true. Solid state is certainly far more reliable and cost effective. Like today's cars, appliances, etc. newer elevators are far more cost effective and use less power to operate. The old technology though is really neat, and more attention was paid to detail back in the day. Where you had metal and brass now you have mostly cheap plastic. Everything today is built like a bic lighter, disposable. If you could have the build quality of yesteryear with today's technology, then you would really have something. I guess it would be called a Rolls Royce.
John Kinder nothing missed about the original touch buttons. Cool idea but they were a pain. These days they keep the external buttons but use an interface called an I40 module. Otis was way ahead of it's time. They even had a primitive speech unit back in the late 60s. It used a series of reel to reel tapes to play messages at various floors. It was called an Elevoice.
There is a bad trade off with regard to replacing the old with new electronics. It is true, you do gain reliability...no doubt there considering the joke that maintenance has become. The bad, is you lose longevity due to forced obsolescence. With the advent of microcontrollers on many circuit boards, getting the old software that your particular board needs or was installed with is difficult. Usually you are forced to buy newer boards which require software upgrades. Sometimes these upgrades spill over to your entire system which gets very expensive. Plus...these days without access to very propriatary service tools you are screwed. The companies retain all rights to the tools they provide to their field guys.
+DieselDucy apply then!! get your name on the list! I wanted to be an elevator mechanic since I was 5 years old and I'm a helper for otis now. you won't regret it.
@@samueladitya1729 if your main point of your comment was to be incorrect you have succeeded. Let me educate you : they're using AC power to run AC motor that is powering a DC generator that is powering the lifts. Sorry if your brain hurts after teaching you something........
@@samueladitya1729 most probably because diode reflectors work better when constant power is applied. Not to mention the power loss, heat build-up and bad reliability of diode reflectors back then and today.
The big ones moving elevators are DC motors. Notice the motor-generators at 4:44 which convert AC to DC. You can lower a DC motor speed by just changing voltage. Today elevator motors are AC, controlled electronically trough VFD.
***** These motors have a cast steel field frame and base and they were produced from the 1920s up until the early 60s. However the modern rolled steel field frames and welded bases also came into production about the same time. The manufacturing technique depends on where the building was and when the order was placed.
![BOWKYLION - วิงวอน (ex-change) [Official MV]](http://i.ytimg.com/vi/cLdnZWDaO-w/mqdefault.jpg)
I watched a Ward Leonard set running an elevator and thought it was one of the most marvelous things I'd seen. To see that motor running at full speed then slow down to a slow crawl was amazing.
love watching all of the physical machanics of these machines. Computers are cool but to watch all this stuff work like a giant clock. so smooth
I had 4 of these, but the newer generation that used 1625 vacuum tubes for the directional circuit control LG, LJ XLG and XLJ and HS....and the diode matrix for the hall call circuits. PI plate selectors with the advancer motors.... The generators and the drive motors were absolute beasts... the controllers...maybe not so much, over 40 year career..hundreds of hours keeping it all running... I miss it. I enjoyed what I did and I think I was pretty dam good at it!
Love older elevators
Would be great for young EE like me to read the diagrams and learn from the system. I'm sure that was quality engineering from days where every logic circuit costed much $$ and was too big
Type B MG sets and pie plate selectors! I still work on this type of equipment in LA! Still using the 2040 touch tubes in the car and still using the glass vacuum tubes at the top of the controller! Still has the original flyball governors! 👏👏👏👏👏👏
I used to work on a geared version on this unit in San Antonio. Ironclad units. I rarely had issues with it. They knew how to make things last back in the day, that’s for sure! Thanks for sharing.
Agreed especially compared to the crap thats out nowadays thats been engineered to the minimum
Very nice and impressive old Gearless DC machinery. 175 volts, 141 amps when I read the type plate correctly - so, about 22 KW or 30 HP of power. Great! I love these old DC drives. Sad that this technology now is obsolete and more and more replaced by three-phase AC engines.
god I love the sound of relays working. You should make an hour video of that on a very busy day.
Crazy request from crazy girl 😍
Worked on all of those machines over the years.Replaced field coils and white metal bearings on the gearless machines,comm skims and undercutting on site.Those Generators have exciters on the end which otis later modernised and removed.
My father was an elevator operator very briefly. Otis is the best brand by orders of magnitude. Keep running strong!
These things really are beautiful to watch.
spent a lot of years with those! Back when Otis was built like a tank!
True to a degree about the machines. Though incredibly built, those big gearless eventually need to get rewound.The good news is they do it onsite.Way too heavy to send out. We finally lost one about 80years old. The wire insulation deteriorates. You start getting hot spots on the commutator. They also start losing motor fields.
DC drives too are becoming a thing of the past. Magnetek or the 12pulse MCE still work well.
These days the AC gearless PM motors are the standard.
Parts made of Chinesium (Chinese made parts)?
This video about the elevator and visit to its machinery room is fun to view.Reposted the link thru You Tube so more whom are interested about this can also view.Reposted YT link to facebook too.Enjoy viewing,this is fun!!!Thank You for telling its story!!!
If you want a complete controller, you might ask the modernization contractor if you could buy one of those being removed.
Otherwise, they're just sold to a scrap metal dealer. There's a lot of copper in those old controllers and contractors may get as much as $50 a piece at the scrap metal yard.
I love that machine room
Ive wanted one of the small ones with the old slate controller board, but yeah even the small are are insanely heavy! So all I have is a ball governor from one
what beautiful machines. This is honestly my true passion. I'm 21 but I want to get into the elevator business. I'm starting my electric class this semester. Please God help me study to become worthy of working for OTIS or another elevator company one day
poopoo pweass good luck!!
Good luck with your studies. I worked for Schindler elevator for 43 years. Its a great living.$$$$$
Did you ever get the old parts
According to the name plate on the machine, the machines are Otis 72 machines.
It is built only using relays, but it functionality is very similar to modern elevators, powered by microcontrollers, inverters and other electronic stuff. Great machine!
Dieselducy is a real live train
I am demoing a room in a roof penthouse on a parking garage with two of these motors in it using a torch and electric chain hoist to lower the pieces
amazing
America know have a new name,,,,,,,,CHINA,,,,,,,,,
Little walk down memory lane. I was an elevator consultant, later a safety inspector, for a couple of decades (I'm 73, retired) and I've been into many hundreds of buildings and inspected thousands of elevators, many like those Otis installations with Ward-Leonard & the relay-based controllers. I don't miss the 85 decibels of those m.g. sets or the kneeling on the carbon/dust floor to write my notes because a clip-board was a nuisance & there's hardly ever a table. Interesting electro-mechanical equipment though. Consultant's general recommendation: Refurbish Otis gearless machines, scrap everything else in the room. Use SCR. New door operators, fixtures, cab finishes. Refurbish hall/car door equipment & whatever's >60% worn (ropes etc.). But, as always, if somebody keen to get the work gives a great price for everything in the room being scrapped and A.C. gearless installed then likely go with that, a tidy package. If memory still serves.
At last I've found an excellent video to watch tonight - must have missed this one when you published it. Wow, amazing! Some things puzzle me though, mainly due to cost I suppose - Why Gearless in a relatively low rise building, and why do they have the more expensive "advancer" system (2:46) on the selector? Answer, for you to film :) but do you see what I mean? Most other buildings would have cut that out, unless the building was high rise and demanded these extra features. Glad you filmed the journey up to the motor room, always interesting so see just where they are and how to get to them - every building is different. EXCELLENT video!
mrmattandmrchay These elevators are definitely over designed for a low rise building. However I have seen hospital service elevators that run at 500 FPM. I believe these gearless machines are roped 2:1
These machines are roped 1:1 not 2:1. The speed of the lift car is the same as the speed of the ropes. There aren’t any rope hitches to be seen which would indicate 2:1 roping. There is double wrap traction. The ropes pass over the traction sheave twice, passing under a secondary sheave below the floor inbetween wraps. This allows the traction sheave to be made with grooves that are kinder to the ropes yet still have sufficient traction.
These lifts are unusual for a relatively low rise building. The higher speed from the 1:1 roping and the advancer panel on the selector would be more appropriate for a much higher rise.
old technology, elevator, there's a way not done yet, no cables machine. Just detection once you put your weight in elevator or escalator by means of detection the machine will take you up, mechanical timing process in every step, weight is the switch .
Beautiful controller if you can read a print they will Last forever! The only thing on these cars i would mod is maybe the Selector !
That selector is an integral part of how the system works. If you wanted to keep the controller anywhere near ‘as is’ then the selector is vital.
Anyway, why would you want to scrap such a well designed piece of engineering that’s good for years. The only problem is now the lack of engineers who know how they work to maintain them.
You should've asked them to run the freight elevator a few times.
Сложнее сделать тогда было нельзя. Поворотный указатель этажей просто великолепен. Размер редуктора указывает что лифт может поднимать больше 1 тонны. А размер контроллера - может автоматически открывать двери, готовить пиццу, ловить радио, сообщать биржевые новости, и вызвать такси )))
Он безредукторный)
@@megalifts да точно ! Постоянного тока ☝️
I'm lucky I had the chance to work on the same type elevator in Bombay India at Hindustan lever Head office they had 3 of the same ones these generator had exiter for controllers to work D C volts was taken from the exiters and the fly ball governor the job is upgraded it was a master piece as per what I know never was the field coil short hats off for the workmanship and the manufactureing people of Europe.
Really cool vid, thanks for the tour
Very nice classics!
Had the opportunity to work on one.... tricky
It's funny to hear someone trying to explain what they have little clue about in an utterly confident tone. I've been there and done that many times before, too. 😂
Nice video, BTW.
lol and thanks so much!
@@DieselDucy no worries. 😅
Very Similar To the Elevators @ the Washington Trust building
Is it possible to get a machine room tour? I am super into mechanical stuff. I plan to major in Mechanical Engineering in college and work as an elevator service person.
elevator only went to 6? they are compact yet powerful. looks hard to add another elevator.
1958 ??? It is not possible and do not believe that it still works ?? !! Here it is cool ... wow
Autotronics controllers where introduced by Otis in 1937 and touch buttons were introduced by Otis in 1948, today they just still running perfectly almost like the 1st day. This is why I hate new elevators and I love old ones.
Clément 2000 Autotronic was introduced in 1948 actually
@@Clement-xy9iv Elevator company sales engineer advised residential client to carry Capital Plan funding for 20-year elevator replacement (5 year old building). Probably right too. Throw out the cell phone & elevator. Get one with better iTunes
Amazing!
I hate to see these nodded! A question... What selectors are those? They look kinda different from the 6850? The pie plates are smaller and the frame looks different. I know WTC had some custom units but I'm not aware of what these are. Merry Christmas from northern Minnesota!!
Super videos greets from Poland
Thank you very much!
Your videos are great andrew
The fidget cameraman has to learn how to hold a camera so the video create no damage in the heads of the viewers.
THAT SOUND! Lovin' it. Footage is great but little too short - want mooooooore! :)
That's what she said! .
Eu trabalho na Otis no Brasil. Eu tenho esse tipo de elevador na minha are.
I work in Otis Brasil I have this lift in my area...
Dear DieselDucy,
What is the name of the builidng you filmed?
From, Connor
*NOT ALLOWED*
This is so cool
Andrew Nice avatar/icon. I have that flag over my pic on my FB page.
And funny how CBS 6 news was there with you.
Kind of like the phone can kickers they used to use...
Very large D.C. motors with bristling copper commutators.
DC brushed
1:41
Awesome old exit sign!
Thanks!
I'm surprised that they used gearless units on such a short building.
This wasn't uncommon on older traction units up north here... They'd slow the cars down by a double sheave via a huge pulley on the car top.
yes I agree.
***** I was wondering the same as the building is low rise, as to a gearless traction machine. Thus a compensating sheave on top of the elevator cab, slowing it down. Was the roping 2:1 with the counterweight also having a compensating sheave? Or just the hoist ropes on the cab one end anchored to the top of the shaft?
TheTheo58 I hope you don't mind me butting in here... if the compensating sheave is on top of the car, the ropes are bolted at the overhead, run through the cartop sheave, back through the overhead and through the gearless machine, and down again to the counterweight... in effect making the car travel half the distance the ropes travel. The equation ignores the counterweight side... since the car side is basically double-roped to the overhead (the bolt on one end and the machine on the other), the motion of the car is exactly 1/2 the speed... or the rope had to move 2:1 (rope motion:car motion). Northland Elevator's video of the Torrey Building doesn't show the sheaves but you can definately hear them. (I'm in that building often). I hope this helps. I got the feeling you were looking to put math/logic to how this process would work out. If I got too long-winded, I appologize.
Awesome DC motors! :)
That's right. Those ain't no wimpy induction motors.
@@jolyonwelsh9834 my favor motors ,i use to repair them in the motor shops i work before wen america was america , know america is china
@@jolyonwelsh9834 induction motor can be strong with proper controller. dc motors are obsolete. permanent magnet motors are the future.
have you ever see a elevator he runs by a elektrik motor he drives a hydraulik pump and the ropes are driven by a hydraulik motor?
You could be thinking of a "roped hydraulic" elevator.
Where is this? I'm liftservismen from Poland.
An elevator lift room comprising a drive, an electric motor in an upright position, a brake, and a suspension element for providing vertical movement of the elevator chassis.
www.sunny-lift.com/Traction-Elevator-System---Gearless-Elevator-Motor-For-Machine-Lift-630---2000-KG-SN-TMMY05.html
Sad to hear these elevators were being modernized...but that's progress. Pretty soon Otis touch buttons will become extinct. As it is they are getting very scarce.
I'll also add as a kid I was fascinated with Otis touch buttons...I was sure I was the only one. These videos are really cool. Thanks for posting them. Here was a time in American history where things were really built to last!
John Kinder The old fashioned systems are definitely fascinating, but being an elevator owner myself, I know they are not worth the cost of keeping in them in service. The new state of the art equipment is very reliable and they can run for years without a trouble call.
That is very true. Solid state is certainly far more reliable and cost effective. Like today's cars, appliances, etc. newer elevators are far more cost effective and use less power to operate. The old technology though is really neat, and more attention was paid to detail back in the day. Where you had metal and brass now you have mostly cheap plastic. Everything today is built like a bic lighter, disposable. If you could have the build quality of yesteryear with today's technology, then you would really have something. I guess it would be called a Rolls Royce.
John Kinder nothing missed about the original touch buttons. Cool idea but they were a pain. These days they keep the external buttons but use an interface called an I40 module.
Otis was way ahead of it's time. They even had a primitive speech unit back in the late 60s. It used a series of reel to reel tapes to play messages at various floors. It was called an Elevoice.
There is a bad trade off with regard to replacing the old with new electronics. It is true, you do gain reliability...no doubt there considering the joke that maintenance has become. The bad, is you lose longevity due to forced obsolescence. With the advent of microcontrollers on many circuit boards, getting the old software that your particular board needs or was installed with is difficult. Usually you are forced to buy newer boards which require software upgrades. Sometimes these upgrades spill over to your entire system which gets very expensive. Plus...these days without access to very propriatary service tools you are screwed. The companies retain all rights to the tools they provide to their field guys.
ive been in a hydraulic motor room in school with a caretaker
+NewAgeConnorAlarm awesome !!
Yup it was fun to be able to go in a motor room
Very cool!!!!!
They WILL regret moding that
Nice motors.
Super!
When I liked it. It hits 1k likes.
What building is this in?
0:18 he said thank you Lamar I didn’t know his name is Lamar like gta 5 let’s talk about Lamar wait I know a dude named Lamar
cool video groetten van Tony pino uit Nederland Hollanda
dieselducy, are you a mechanic?
I wish I was but just an enthusiast
+DieselDucy apply then!! get your name on the list! I wanted to be an elevator mechanic since I was 5 years old and I'm a helper for otis now. you won't regret it.
+DieselDucy This is Cool where did you Buy DieselDucy? because I really want on
CT cu NJ
good
This Very old version
Thomas Edison would have been proud
but they use 3 phase ac line
@@samueladitya1729 if your main point of your comment was to be incorrect you have succeeded.
Let me educate you : they're using AC power to run AC motor that is powering a DC generator that is powering the lifts.
Sorry if your brain hurts after teaching you something........
@@obviouslytwo4u umm why not just use diode rectifier?
@@samueladitya1729 most probably because diode reflectors work better when constant power is applied.
Not to mention the power loss, heat build-up and bad reliability of diode reflectors back then and today.
@@obviouslytwo4u yes yes master
2:12 DC generator.
Yes
the only way to fly
Is the motor 480 volts 3 phase what city is it in
The big ones moving elevators are DC motors. Notice the motor-generators at 4:44 which convert AC to DC. You can lower a DC motor speed by just changing voltage. Today elevator motors are AC, controlled electronically trough VFD.
Subliminal message at 6:15
@border the porter - i would guess 70s or 80's
It is 1958, there was a plate on the controller.
***** These motors have a cast steel field frame and base and they were produced from the 1920s up until the early 60s. However the modern rolled steel field frames and welded bases also came into production about the same time. The manufacturing technique depends on where the building was and when the order was placed.
Did you save the parts?
Tried. I could not get them.
@@DieselDucy,
That’s awful…
+DieselDucy elevator heaven well i LOVE buses
Not? Fps??
Is the speed like 500 ft/min
Must be 700 fpm. It's 127 rpm double-wrapped roped 1:1. Also 500 fpm would be roped 2:1
Definitely not a safety first video...
100% Analog
elevotism
Yep
I looked like crap in the video. LoL
U were fine bud :)
+Chris Walker U actually looked so fancy! L.O.L.
2⃣0⃣1⃣5⃣ 2⃣0⃣1⃣5⃣
2️⃣0️⃣1️⃣6️⃣ 2️⃣0️⃣1️⃣6️⃣
Excellent!