I worked at Baldor Electric in the 70’s and 80’s. We made lots of specialty motors. The Repulsion/Induction motors that we made were for farm usage. Most of them ran on 120v, single phase, but pulled a LOT of current. Ridiculous starting torque! We got one back for warranty once. It snapped off its output shaft... 1-1/2” diameter! The grain elevator it was running was iced up in cold weather, but the motor was determined to turn anyway.
That’s wild, what was their power rating? I’ve stalled a 35HP gas motor running full throttle when the concrete I was cutting snapped shut on it. The only thing that could yield was the drive belt slipping a little before the motor fully died. It only had a 1” blade shaft and yet never once did any damage to it lol.
Are you sure it was 120? A 1 1/2" shaft is absolutely massive for a 120v motor. At that size, I'd be expecting three phase. I only have a 2 year degree, but I feel like 120v, even on a heavy breaker, isn't practical for delivering that kind of turning power.
@@OtherDalfite All of the older style farm-duty motors that we built ran on single phase, as not a lot of rural applications have 3-phase available. These motors were beasts. Cast-iron frame, very heavy, large ball bearings. Four-pole R/I, no start-capacitor, the commutator itself was about 4 inches in diameter, with the short-out switch segments mounted in a ring. There were two sizes, 5 and 7.5 hp. Electric motors produce their greatest torque at locked-rotor (startup). In the application where the motor failed, it may have been sub-zero, but it was nonetheless snapped off. I have no degree, but I worked hands-on with these motors for 12 years.
I love how the sound smooths out once the friction of the brushes is no longer whining away. Assuming that piece was restored. Whoever did the work did a wonderful job. It's a thing of beauty.
the Advantage of this stuff is thats its easily repairable. however the maintenance on this type of motor is greater, due to the carbon brushes and complex mechanical system.
I build and maintain pipe organs. Many organ blowers from the early part of the century were equipped with Century Repulsion-start/Induction-Run motors, however, the motors had an automatic centrifugal device that threw the brushes out which took the place of the manual lever on this motor. It sounded the same -- the buzz of the brushes and that whir, then the little whir when it came up to full speed after the brushes disengaged. Very dependable motors -- there are still a considerable number of them still in use, thank you.
When I was in trade school as a machinist, we had an open side planer made sometime in the late 19th century. It was equipped with General Electric controls, circa 1904. The motor control box had a push button and a lever. As I recall, you pulled the lever to the start position, then pushed the start button. There was an unholy growl rising to a banshee screech and once that was reached you yanked the lever to the run position. The planer utilized flat leather belts that would squeal with every direction change of the massive iron bed. There was a cosmetology class on the floor above us at that location. They'd come down to bitch about the ungodly noise!
Absolutely beautiful motor. I have read about the operation of repulsion start motors, but seeing one in action is quite another thing. Thank you for posting.
A true work of art! If I had one of these, it would live on the coffee table in the living room, no matter what my wife says! Thank you kindly for sharing this. Instant LIKE!!
Interesting video. I saw one such motor on a pump back in 1982, but with a centrifugal switch instead of a manual one. I figured it had something to do with starting torque but didn't fully understand the theory of how it worked. Thanks for explaining it.
Well, you nah I can learn something new every day!. On our farm, we had a few motors, one for our water pump and one Wye/Delta start a bit bigger one for various uses. Finally a big one (bigger than our that time transformer) for the heavy tasks. It wasa a wound rotor type, so it could be started with the limited rating of the transformer. However, a few times it blew the transformer primary fuses. I witnessed the replacement at least once. Later on, I was dealing with two repulsion motors used for pumping some chemicals through a plastic hose by pressing the hose with two rollers. Adjusting the repulsion lever you could adjust the flow rate. I looked at the description of the repulsion motor in the pump manual and some other places, never fully grasping it then. I think somebody damaged one of the motors, while the other one needed a number of times a replacement of the hose. That happened because the rollers made the hose work its way forward despite of holding clamps. Other times the hose just split under the rollers. That was before my graduation and I have not seen any repulsion motor or a video since then, until now. Thank you!
@Muckin 4on 1920s electric safety: "So .. if I touch that, I will be burned to a crisp?" "Yes, so don't touch it" "Shouldn't we consider putting some kind of cover over it?" "Nah, that would be a waste of money, also you can't marvel the wonders of technology anymore. And anyhow, why would anybody touch it?" "It happens by accident?" "I don't think I know such people .. at least not anymore."
Jadul banget.. saiki wis pada nganggo AC induksi 3 phase .. controller e nganggo sing pure sine wave jan bisa go gawe mobil listrik kayak tesla matep banget yakin
(Sry for bad englisch im from germany and we of course learn everything in german)Its the winding that makes a diffrence. I cant 100% explain it. The windongs of the rotor are placed in a way where the stator has more "way" to pull to the same phase again therefore the magnetic field pulls the stator over a longer distance in the same pulse with less tourqe of course.
Very cool! I have a 2HP Century repulsion start induction run motor from 1927, it powers the blower to my pipe organ, startup even sounds a lot like this smaller motor! The 2HP motor weighs 290 pounds and it had a sheave on one end of the shaft that ran a 12vdc generator, but that had been removed and replaced long ago with a rectifier. ua-cam.com/video/U1SlR7dMbLg/v-deo.html
Almost, except the power to the armature is magnetically induced (inducted?) by the field coil. The brushes provide no power to the armature, only make connections. At least I think, anyway.
The Zenit of humans was behind 1900-1920 all technical are prinicpial knowledge in this time, with 2 Billion peples and not 8. Now we goe's downward soon .. Gretings the Zinit technology.
back then common sense was a commodity EVERYONE had you kept your hands and fingers away from current carrying parts. if you didn't and got a shock,, it was YOUR fault . no one elses. workers used their heads for something besides as spacers to keep their ears apart back then. what a concept huh?????
@@williammoses6232 wonderfully said, back then there was a reason to have a brain, and if YOU did something bad it was YOUR fault and you didn't have a lawyer to blame what YOU did yourself on the equipment. everyone was not babied by the manufacturers and people actually had to think for themselves and were responsible for their own actions.
I worked at Baldor Electric in the 70’s and 80’s. We made lots of specialty motors. The Repulsion/Induction motors that we made were for farm usage. Most of them ran on 120v, single phase, but pulled a LOT of current. Ridiculous starting torque! We got one back for warranty once. It snapped off its output shaft... 1-1/2” diameter! The grain elevator it was running was iced up in cold weather, but the motor was determined to turn anyway.
That’s wild, what was their power rating?
I’ve stalled a 35HP gas motor running full throttle when the concrete I was cutting snapped shut on it.
The only thing that could yield was the drive belt slipping a little before the motor fully died. It only had a 1” blade shaft and yet never once did any damage to it lol.
Are you sure it was 120? A 1 1/2" shaft is absolutely massive for a 120v motor. At that size, I'd be expecting three phase. I only have a 2 year degree, but I feel like 120v, even on a heavy breaker, isn't practical for delivering that kind of turning power.
@@OtherDalfite All of the older style farm-duty motors that we built ran on single phase, as not a lot of rural applications have 3-phase available. These motors were beasts. Cast-iron frame, very heavy, large ball bearings. Four-pole R/I, no start-capacitor, the commutator itself was about 4 inches in diameter, with the short-out switch segments mounted in a ring. There were two sizes, 5 and 7.5 hp. Electric motors produce their greatest torque at locked-rotor (startup). In the application where the motor failed, it may have been sub-zero, but it was nonetheless snapped off.
I have no degree, but I worked hands-on with these motors for 12 years.
i guess Im quite randomly asking but do anyone know of a good website to watch new series online?
@Brayden Aidan thanks, I went there and it seems like they got a lot of movies there =) Appreciate it !
I love how the sound smooths out once the friction of the brushes is no longer whining away.
Assuming that piece was restored. Whoever did the work did a wonderful job. It's a thing of beauty.
All preserved machines should be run and have videos made while they operate just like this one. Thank you for a splendid presentation.
That was made when people made stuff to last. I have a GE brass blade fan that was made about the 1920s and that thing is going strong.
Paul's Place except when it came to tv and radio wax capacitors which go bad over time
the Advantage of this stuff is thats its easily repairable. however the maintenance on this type of motor is greater, due to the carbon brushes and complex mechanical system.
I build and maintain pipe organs. Many organ blowers from the early part of the century were equipped with Century Repulsion-start/Induction-Run motors, however, the motors had an automatic centrifugal device that threw the brushes out which took the place of the manual lever on this motor. It sounded the same -- the buzz of the brushes and that whir, then the little whir when it came up to full speed after the brushes disengaged. Very dependable motors -- there are still a considerable number of them still in use, thank you.
They're still in use because they was so well made.
When I was in trade school as a machinist, we had an open side planer made sometime in the late 19th century. It was equipped with General Electric controls, circa 1904. The motor control box had a push button and a lever. As I recall, you pulled the lever to the start position, then pushed the start button. There was an unholy growl rising to a banshee screech and once that was reached you yanked the lever to the run position. The planer utilized flat leather belts that would squeal with every direction change of the massive iron bed. There was a cosmetology class on the floor above us at that location. They'd come down to bitch about the ungodly noise!
Absolutely beautiful motor. I have read about the operation of repulsion start motors, but seeing one in action is quite another thing. Thank you for posting.
A true work of art! If I had one of these, it would live on the coffee table in the living room, no matter what my wife says! Thank you kindly for sharing this. Instant LIKE!!
It's a wonderful video. I've been working on field of electric motors for 35 years. I want to show my juniors. thank you!!
Interesting video. I saw one such motor on a pump back in 1982, but with a centrifugal switch instead of a manual one. I figured it had something to do with starting torque but didn't fully understand the theory of how it worked. Thanks for explaining it.
I love how that motor sounds! So cool how you start it. Now a capacitor takes over that job.
Thanks a lot for sharing this unique piece of engineering !
Well, you nah I can learn something new every day!. On our farm, we had a few motors, one for our water pump and one Wye/Delta start a bit bigger one for various uses. Finally a big one (bigger than our that time transformer) for the heavy tasks. It wasa a wound rotor type, so it could be started with the limited rating of the transformer. However, a few times it blew the transformer primary fuses. I witnessed the replacement at least once.
Later on, I was dealing with two repulsion motors used for pumping some chemicals through a plastic hose by pressing the hose with two rollers. Adjusting the repulsion lever you could adjust the flow rate. I looked at the description of the repulsion motor in the pump manual and some other places, never fully grasping it then. I think somebody damaged one of the motors, while the other one needed a number of times a replacement of the hose. That happened because the rollers made the hose work its way forward despite of holding clamps. Other times the hose just split under the rollers. That was before my graduation and I have not seen any repulsion motor or a video since then, until now. Thank you!
mechanical technology is not " complex ", it is easier and The most brilliant technology known to mankind.
Very Impressive. This is something that I have learnt today, Thank you.
It's neat to have a brushed and brushless motor in one. You can really hear how much chatter brushed motors make because of brushes
It is a gorgeous motor. Really wish they would have zoomed in on the nameplate, I'm a total spec nerd.
That thing is fucking GORGEOUS
Nothing like what Emerson produces today
Yikes
That was awesome!! We came a looooong way in motor technology.
That is a beautiful machine.
Just imagine a 100hp version, ha-ha, but this is a cool motor!
This is very helpful i will make one of these someday.
This was really cool! Thanks for showing us this beautiful old motor, and explaining how it works. Cheers!
Interesting motors. All those exposed electrics look a big dangerous. I guess the motor was shielded in some way when in use.
@Muckin 4on 1920s electric safety:
"So .. if I touch that, I will be burned to a crisp?"
"Yes, so don't touch it"
"Shouldn't we consider putting some kind of cover over it?"
"Nah, that would be a waste of money, also you can't marvel the wonders of technology anymore. And anyhow, why would anybody touch it?"
"It happens by accident?"
"I don't think I know such people .. at least not anymore."
Wow, I never realized how loud brushes are until I saw this video haha
Production of this model must be restarted at all costs costs.
Idiotic
@@timsawyer9231 You're right you're the only superior here I bow to you and stab myself for Joe Biden is my lord lmfao
@@timsawyer9231 wtf I'm from Italy I ain't lost nothing
Even the nameplate is a work of art!
Nice manual soft starter for AC motor.
wow it's a good comparison to see the noise that the brushes make
interesting and well explained, thank you
Oh, you guys found me in my electrical form
Это искусство, а не просто двигатель.
Excellent
Sketchy! I like it!
Well explained 👍
wow! what a nice machine! :)
Классный мотор генератор спасибо за видео здоровья вам удачи и всего хорошего пока 👋👍👍👍
oh man i love the sound
Very interesting
Cool vintage motor. So this is 1/2 HP or 370 W of power. Does it consume 370 W from the grid?
Osam mechanical & electrical combination
Jadul banget.. saiki wis pada nganggo AC induksi 3 phase .. controller e nganggo sing pure sine wave jan bisa go gawe mobil listrik kayak tesla matep banget yakin
Quite impressive!
Very nice!!!!
That is beautiful 😀
I wish I had one of those...
That's super cool
New friend from Dubai
Nice video
VERY good!
thank you sire
Im not a pro, but how the hell is induction motor capable of 7200 rpm on 60hz source?
(Sry for bad englisch im from germany and we of course learn everything in german)Its the winding that makes a diffrence. I cant 100% explain it. The windongs of the rotor are placed in a way where the stator has more "way" to pull to the same phase again therefore the magnetic field pulls the stator over a longer distance in the same pulse with less tourqe of course.
That is the most steam punk electric motor I've ever seen
It sounds like my computer when i play Minecraft
Lol
I think this was a sales/demo piece made by Emerson for marketing their technology.
So cool invention. Is Actually a combination of universal motor and AC induction motor??
This is working without battery or with electric energy
Awesome
nice video
Very cool! I have a 2HP Century repulsion start induction run motor from 1927, it powers the blower to my pipe organ, startup even sounds a lot like this smaller motor! The 2HP motor weighs 290 pounds and it had a sheave on one end of the shaft that ran a 12vdc generator, but that had been removed and replaced long ago with a rectifier.
ua-cam.com/video/U1SlR7dMbLg/v-deo.html
Fantastic
Change or lube (Oil caps) that bearing , it drives me crazy in the ON position.
That was cool, thanks
Cool
more than 100years and stil working
vs
2020 ...1 day after warranty end and its broken
Is it like a universal motor to start, then switched to induction?
Almost, except the power to the armature is magnetically induced (inducted?) by the field coil. The brushes provide no power to the armature, only make connections. At least I think, anyway.
where is the power comming from
That's great job . If u bot wiring dagrime . Thanks
Abraço de Portugal 🇵🇹
Probably had it’s shocking moments.
NOTHINS' better than a BIG fat hard wired 3 phase motor!!! SWEET!!!
What if you skipped the start position and went straight to run? Would it speed up slower?
It will pull a shit ton of current and not have as much starting torque.
2:47 by moving the- "cut" brushes to the left
ya id want one too :D
THEM SLEEVE BEARINGS NEED MORE GREASE.
thats a sexy motor.
Riyaz electrical work thanks for watching
they should have used an Arduino
The Zenit of humans was behind 1900-1920 all technical are prinicpial knowledge in this time, with 2 Billion peples and not 8. Now we goe's downward soon .. Gretings the Zinit technology.
An loc de lagere sepote pune rulumentii si atuncia nuai trebuie unse
sounds like my pc
Hermoso
A schematic would help understand it better.
muito bom
Inventions without programes obsolency ❤
No one thought about a capacitor?
A practical motor starting capacitor in 1892?
Por favor preciso da tradução en português obrigado
It's a DEATH TRAP with all those exposed ⚡ electrical ⚡ connections! Wouldn't be allowed nowadays!
👍
This isn't unique. This is essentially the same thing as a slip ring induction motor.
yeah yeah... elettric V-TEC , understand
How many idiots did that thing make respect electricity?
steampunk but electrical :p
😯
i wonder why nobody that operate high voltage motor use rubber gloves? one little sloppy action and you could get zapped.
back then common sense was a commodity EVERYONE had
you kept your hands and fingers away from current carrying parts.
if you didn't and got a shock,, it was YOUR fault . no one elses.
workers used their heads for something besides as spacers to keep their ears
apart back then. what a concept huh?????
@@williammoses6232 ok boomer
@@williammoses6232 wonderfully said, back then there was a reason to have a brain, and if YOU did something bad it was YOUR fault and you didn't have a lawyer to blame what YOU did yourself on the equipment. everyone was not babied by the manufacturers and people actually had to think for themselves and were responsible for their own actions.
zidy utopili ten i wiele innych wynalazków, zakała ludzkości
Geesh....1/2 hp motor...132lbs...lol
Что это такое????
very good