Electromagnetic track brake in action 

That would be bad if only using the regular brakes

Good news

Question what’s the fastest you ever drove a train?

@@Legend-lc9bv our trains are capped at 55 mph and we’re governed depending on track conditions....

@@kellyleathers8806 shit you guys pass me sometimes feel like you guys going 200mph lol

same

Same

Same

Same

Same here

😂

Haha....u pull break ....it stops half mile extra...

Lol

The flintstones used their feet 🦶

BRAWO

That's the greatest part about this, the pads AREN'T taking in the energy! Because the moving magnets induce an opposing electric field in the rails, the kinetic energy of the train is dumped into the rails without heating up the pads all that much.

@@Mark-kt5mh thanks for blowing my mind even further!

@@Mark-kt5mh If that was the case why would it have sparks when applied? An Eddy current brake is what your describing. The eddy current brake does not have any mechanical contact with the rail.

@@Mark-kt5mh Looks to me that the magnets only serve to "suck" the ceramic pads onto the rails with enormous force to cause a lot of friction. Still, the cool rails themselves should soak up most of the heat, so the pads should not heat up nearly as much as they would on an equivalent disk break.

@@fnorgen No, the braking action is generated by the opposing electric fields. The heat is dumped into the rails and only the rails.

You are Saitama you can think that

@@totkagurujii of course.

I feel dumb now for thinking that braking pads on wheels was a thing.

It's not Indian didi on Activa Scooter, it's a train😂😂

@@totkagurujii well said

True that

No more so than car or semi truck brakes. Instead of air or hydraulic pressure it's magnets. Simple on off switch Brake pad material prolly slightly different cause rails are steel rather than cast. And like semi trucks brakes, they prolly fail closed meaning engaged.

@@duganfr Wasn't the video about trains?

@@levigoldwing1536 obviously. But I can tell you don't understand what I said.

@@duganfr dude sorry about Levi Campos hes definitely a Filipino... I as a filipino myself, i concede my own race's incredibly awful reasoning..

I guess you don't to reset the scenario again?

Old Czech trams, there were such trams all over Russia. And now there is.

They don't need to be old ;) Amsterdam trams, all the new ones as well, feature magnet friction brakes for at least half a century already. And though Siemens Combino do not use resistive power control at all, they do feature magnet brakes. Trams in The Hague control this via footpedal if I remember it right, while in Amsterdam it is all incorporated in the drive/acceleration lever: pulling the lever back all the way automatically engages the magnet brake as far as I know.

Pretty much all the new ones, do, too, because they're much less reliant on the rails' condition than the wheels (e.g. ice or autumn leaves make it much, much more difficult to have braking traction)

nope, this is just regular braking method, used a lot in public transport vehicles.

Track brake is exclusively for emergency use on all rail vehicles. It significantly shortenes the brake distance, but obviously causes extensive wear if used for regular braking. Just added this in the description.

@@TC-Rail I used to drive passenger trains in southern Sweden. We were allowed to use these for normal braking too, if we needed to increase the braking action. There was a separate button next to the brake lever that activated the magnets. Excellent for cleaning the track from the grease made from autumn leaves. Only rule was to not use it when passing signals, switches or road crossings, as the metal shavings could cause shorts in the signal gaps in the track. Funnily enough, the newer trains we got deenergized the main switch and dropped the pantograph when pulling into emergency braking, thus also cutting power to the magnets. We got more braking action from full non emergency braking and dropping the magnets manually. On a dry track we could stop from 160 km/h to 0 in less than 500 meters. You almost fell out of the chair.

Yes, that's true, I made the video, using this button. The problem at signals is not shorting the insulation joint (it is shorted by the train itself) but confusing the axle counters which count the magnet as additional wheel.

@@TC-Rail but if track or brake savings savings stuck in they will cause shorted joint. So better to avoid on signals and X ings.

So that means you are going to watch it again and make the same comment in 5 years? You know you don't have to watch something just because it got recommended right?

@@tylerbonser7686 We are at the will of RU-vid and their algorithm

@@brianhecimovich4488 so we are forced to watch videos just because they are recommended to us and then since one doesn't have the ability to not watch something they must complain about it?

See you then 🙂

@@tylerbonser7686 Trust me man you're not the only one sick of seeing "the algorithm " comment on every damn video now. "Well it looks like the algorithm brought us all back together again" like what the fuck does that even mean, stupid.

Yep, i've experienced that in the 1980's. My favorite motorman was a guy named George.

I was wondering how you know this very specific and random fact.. and then I noticed your username is TheChicagoL and everything made sense. Cheers mate

@@MyNameIsSteveYesitis O.K......Lol🤣🤣🤣!

In India also

@@santocyriac1458 No. In Indian trains, the smell that you get is of the brake pads after a round of hard braking.

Its an emergency brake. Its not used for braking at a normal stop station

In which country of Europe ? Because in France they are definitly not like this, they use the motor itself to generate a maximum of electricity while slowing down the tram

Poland, and this is emergency brake

... and a trustworthy crew, to hold him by his ankles while recording. 📹🙃

👍👍

Yeah and it looks illegal.

@@Bassotronics why

@ *Nidhal 01* If this were for constant use, it will scrape the railhead which is essential for a smooth and balanced ride for the wheels. Especially creating uneven surfaces throughout the track system.

No direct metal contact like a bike v brake

That would involve having magnets embedded in the tracks as well. MAG LEV trains utilize the eddy principle though I would assume

@@Hateline I thought they were electro magnets from the thumbnail

that would heat up the tracks

@@abhinaba742 yes, but not enough to fail would it?

the springs are there to keep them up when not braking, they can only support the weight of the brake + something extra when breaking, they are not decreasing the grip by much

@@davidrajchman7162 no

@@powderedwater4742 Yes. The springs hold the brakes off the rail when they are not energised.

😂😂😂😂😂 Haha Wtf happened to me too

I was about to write the same thing..😂

I assume that's because the magnet is powered by dynamos attached to the bogie wheels. On a tram, they can be used down to a stop, taking power from the overhead. Useful when some bonehead four-wheeler tries to cut across the front.

@@Kromaatikse Nope, they get powered by the internal power supply, like batteries. If you don't have enough voltage or a turned off battery, the magnet brakes will not work. The only thing, which indirectly works like a dynamo is the battery charger device.

Vancouver Canada has an automated elevated passenger train system that has this type of emergency brake. They will engage if the train loses its electrical supply and if the onboard computer detects an emergency situation. They have a test cycle done every trip away from the downtown direction at a station just before the service and maintenance yard. (Round trip is two hours) If it fails testing, the train gets taken out of service.

@@matthewsvideos8235 Wait, is this test cycle done with passengers on board? So based on your description this should happen eastbound some time before 22nd Street Station? I'll listen for it in some post-COVID future when I get to ride SkyTrain again. Also, I do recall one time when I was riding westbound just ahead of Broadway / Commercial Drive on the Millennium Line and somebody entered the track area so the train hit maximum braking power. I have this vague recollection that the braking was so sharp, the doors momentarily opened up a small amount before closing shut. Is this possible (do I remember correctly)? Isn't there some form of locking mechanism?

@@antonbabadjanov8813 It is tested while stopped eastbound at Edmonds station. The track brakes will engage if the three onboard computers lose contact with the main control centre or if there is a computer fault onboard. The old Mk1 trains doors do open by hand to a point, but not enough to get out. I was told that it was part of detecting if there was an obstruction when the doors close. Newer trains from 1993 and newer lock properly.

Das ist falsch! Ich bin Qualifizierter Bremseninstandhalter bei der Deutschen Bahn! Unter ca. 5 bis 3 km/h (abhängig vom Fahrzeug) geht die MG wieder hoch!

Yes, they were in use at that time, they are not a new invention.

Oh yes, I was driving trams/street cars built in the 1940's some years ago, and they had Magnetic Trackbrakes like this. They were activated with a foot pedal, step on it halfway down and you got sand, all the way down and you got sand + Magnetic Trackbrake. / B.

Yes, the patent for this first electromagnetic brakes like this was registered since 5 April 1900, one and a quarter century ago

@@harukinoobie5966 Correct, while it may be rules to use when not an emergency this is not the main way of slowing down and stopping (For a signal or a platform.) The magnetic slide brake adds a lot of friction for when you need to stop immediately.

Me too. Had watch the smoke and sparks.

It is actually in wide use nowadays as emergency brake only.

Probably over 40 years on passenger trains.

It's use in Romania on many locomotives and on passengers cars for regional routes.

Nope

Why would anyone have thought that?

Probably

Its just an electromagnet actuated brake. The braking is due to the brake pad using the track as a braking surface.

I think the electromagnet brake works on the principle of eddy currents based on a phenomenon named as electromagnetic dampening.

Хрененца

This is used only in emergency. And it is not used while changing tracks...

Нашол

Привет

Thanks, I was looking for the русский коммент.

Нет

@@ytstolemyname а вот это зря

I do that sort of braking in the car so as not to cause discomfort to the passengers.

@blacknester Take a look again there is a sparking which is produced when two matels frictioned

@blacknester electro magnet is used to push the brakes against the tracks..

@blacknester The electro magnet pulls the braking pad against the rail...

False, this is an electromagnetically actuated friction track brake. It uses an electromagnet to attract a brake shoe to the rail and physically pull it onto it. Eddy brakes are rigidly mounted to the trucks.

@@howlingwolven No, it's not false. Both variants exist, but both get the majority of the braking action from eddi effects rather than friction. Or else they lied to me when I trained to be a driver.

​@@Tjita1 No. The friction-less electromagnetic brakes like the German ICE-3 has are NEVER set down to the track, they always have a few millimeters distance and use the magnetic induction only. However, the classic magnetic brakes like shown here in the video use the magnets only to increase the friction on the rail.

@@Manic97LP In that case my textbooks from my train driver training was wrong..

Tjita1 Where were you trained?

i dont think hurting someone is funny, but ok...

If it would have been a tram, it would have stopped within a tram length. They cause extremely violent braking action on board those things and can easily injure passengers inside if they don't hold on to something.

@@weeardguy By the way, the track brakes get used fairly frequently on the MBTA (Boston area) trains, especially back in the days when we still had Boeing LRVs (lasted into the 2000s) -- they ended up getting used for rollback prevention (the Boeing LRVs had a real problem with rollback when trying to start uphill). That said, the Boeing LRVs were capable of stopping hard when they wanted to, and I was once on one that did this -- some idiot made a left turn right in front of us, but we managed to avoid hitting them. The Type 7s (still in service) have MUCH WORSE stopping ability, even with the track brakes applied (which happens in case of slippery rail -- even with the track brake on, they will slide for several car lengths even when starting braking from station-entering speed). Haven't yet had a Type 8 try to do an emergency stop, but unlike the other types, they only have track brakes under the end bogies, not the on in the middle.

@@Lucius_Chiaraviglio It's a rarity to experience them in action on an average tram here (even though I've been through enough of 'em on Amsterdam trams to try and always find a backwards facing seat to avoid being thrown from a forward facing seat). The Siemens Combinos trams in Amsterdam are (from my experience) very bad at braking with their normal brakes. I've been through numerous SPAD with them (although they aren't really called SPAD I think) when the light turned red quicker than the driver could respond to. Sometimes meant a passenger somewhere had to relay the signal-aspect to the driver. On Dutch trains they are predominantly used as a parking brake and only in emergencies they are used as an extra track brake. It probably saved the day in this collision from 3 years ago: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-qpsvGrAOBOM.html . The train was doing around 80 km/h. Visibility for the train driver is very bad at this point as the crossing is located in a tight curve of the tracks.