Could you also show, how the engine stops and changes its direction? I mean the Walschaert system....?
@kerryjames7150
8 ай бұрын
A non saturated is described , what happened to the suiper heating .
@RakeshKumar-ig3ts
10 ай бұрын
how to make reverse
@anteater555
Жыл бұрын
How is water put into the boiler mid operation?
@jreicker1
Жыл бұрын
Of course locomotives need gears. The requirements of a freight loco (high torque, slow speeds, heavy loads = smaller wheels (like low gear on your car or bicycle) are very different from a passenger loco (smooth running, high speed = large wheels (like high gear on your car or bicycle). Instead of developing a transmission and gears they designed different locos for the different jobs.
@michaelbeary
Жыл бұрын
it'd be nice to see a superheating system video
@opdrvr
Жыл бұрын
Thank you.
@hazemsaeed8710
2 жыл бұрын
How much pressure start moving
@jayvonnoelsmith8445
2 жыл бұрын
Steam locomotives are so amazing
@benrusso9751
2 жыл бұрын
That was very complicated
@TheEmpressMouse
2 жыл бұрын
Best and clearest explanation I’ve ever seen.
@Damontable
2 жыл бұрын
Thanks you so much for this video. It explains things very well.
@shirleymental4189
2 жыл бұрын
Would a stem engine work in outer space?
@WanderingYankee
2 жыл бұрын
Yes, but you would need some modifications. The most important one would be sealing and supplying oxygen to the firebox. Most of the engine would function just fine since it is (mostly) sealed. The boiler/pistons can operate in the neighborhood of 20 times more than normal atmospheric pressure (~around 300 psi). In a vacuum, the difference is only 1. The other issue would be traction. Here on Earth, gravity holds the train down. In space, you would need wheels that can grip a rail, just like rollercoasters do.
@scottprenzler4764
2 жыл бұрын
So where is the steam return back into the boiler ? Or is there one ? Does the steam turn into condensate and return to the system ? Figured the tubes would burn up if it ran low on water
@WanderingYankee
2 жыл бұрын
Once used, the steam does not return to the boiler. It is expelled directly from the piston. The exception would be with the Mallet-type locomotives that have two sets of drive wheels (such as the 4-8-8-4 Big Boy or the 4-6-6-4 Challenger). High-pressure steam from the boiler is used to power one set of drive wheels. Then the steam is routed to the other set of drive wheels with a piston that can utilize a lower pressure. Then it is exhausted out to the sides. Edit: Oh, and running out of water would be REALLY bad! Water under pressure helps keep the temperature down (just like the radiator in your car). Without water, the steel can heat up enough to deform and weaken causing a catastrophic explosion. In other words, if you run out of water, you're going to have a bad day!
@scottprenzler4764
2 жыл бұрын
@@WanderingYankee so since there’s no condensate return to the water supply, then the range, I’d assume, wouldn’t be very far ?? I know water droplets expand 1700x so 25,000 gallons is a lot of steam. (I say 25,000 cuz I seen Big Boy the other day). Not a train guy just work in the refinery ops and was thinking about this. Very cool! Dont guess pulling an extra tank of water and pumping to boiler as needed was a thing.
@jthepickle7
2 жыл бұрын
hypnotic
@dammm3731
3 жыл бұрын
two men fireman??? HOW DARE YOU
@jamesstuart3346
3 жыл бұрын
Should also be noted that the drive wheels were weighted to pull the wheels past the "dead zone" at the end of each power stroke.
@robertbrown2728
3 жыл бұрын
The weights on the wheels are to balance the huge mass of the coupling rods, crankpins etc. There isn't really a dead zone because the opposing wheels are set at 90 degrees on a two or four cylinder loco and at 120 on a three cylinder loco.
@LardGreystoke
3 жыл бұрын
This is the future.
@cbussery
3 жыл бұрын
Some steam locomotives seem to make more than two chugging sounds per wheel revolution. Do the cylinders alternate their movements forward and back or do they both move forward and back together? Please answer.
@robertbrown2728
3 жыл бұрын
Each cylinder is exhausted twice per wheel revolution, as steam is admitted and expelled both sides of the piston. As the crankpins on the wheels are 90 degrees apart from the ones on the opposite side of the loco, there is an exhaust stroke at every quarter of a turn from one or other cylinder, even on a two cylinder loco, therefore, 4 chuffs per revolution.
@gizzly50
3 жыл бұрын
But how do I get my spare ribs into the smoke box?
@scararueduard
3 жыл бұрын
very impressive engine. Although it's very inefficient, being able to move that much weight with great speed without any gears is amazing. That's a lot of power! One of the greatest inventions of mankind.
@marshalcraft
3 жыл бұрын
Inefficient, in terms of mass, which move heavy train further, ?
@scararueduard
3 жыл бұрын
@@marshalcraft inefficient in terms of energy yield... as far as i know, the yield is somewhere less than 10%. Compared to diesel engine that is a lot more efficient in terms of energy yield. This means you need more calories for the steam engine to get the same result as a diesel engine.
@parkershaw8529
3 жыл бұрын
Are two cylinders phased 180 degrees against each other? If yes, then, how does the locomotive starts to move if the pistons happens to be top and bottom dead center please?
@robertbrown2728
3 жыл бұрын
90 degrees on a two or four cylinder loco and 120 degrees on a three cylinder loco
@ivanquituisaca7942
3 жыл бұрын
👍👏
@AuthenticNicholasMeyer
3 жыл бұрын
Sometimes I'm truly amazed by the mechanical ingenuity of our ancestors.
@peters972
3 жыл бұрын
The exhaust steam does not merely escape, it is used to draw heated air and smoke through the boiler pipes as it blows up the chimney. This is a crucial part of the design. Thank you.
@ompalsingh5961
3 жыл бұрын
Nice video that helps the newcomers in the field of boiler.
@leejeffrey5924
3 жыл бұрын
So the fire box is where the fire is. Wow. You learn something new every day.
@H.pylori
3 жыл бұрын
Very good explanation of how the steam engine works. So, the locomotive has a piston and valve on each side. They are slightly out of phase so that power is delivered to the wheels at all times. So is the chuffing sound made up of 4 components, or are the sounds so close that at speed there appears to be only two sounds?
@robertbrown2728
3 жыл бұрын
Each cylinder is exhausted twice per wheel revolution, as steam is admitted and expelled both sides of the piston. As the crankpins on the wheels are 90 degrees apart from the ones on the opposite side of the loco, there is an exhaust stroke at every quarter of a turn from one or other cylinder, even on a two cylinder loco, therefore, 4 chuffs per revolution.
@H.pylori
3 жыл бұрын
@@robertbrown2728 Sir, thank you so much for helping me with this. While researching the history of the SPLA&SL Railroad, I became fascinated by the engineering that went into making these locomotives work. Amazing what they were able to do in getting everything to work in sequence.
@robertbrown2728
3 жыл бұрын
@@H.pylori I'm glad to be of help. There are many aspects of steam locos that I don't fully understand, for example - exactly how an injector works, and I'm fascinated by them all :)
@GeeDuhbyaArbusto1
4 жыл бұрын
This shouldn't be listed under the "Comedy" category.
@thomasvandevelde8157
4 жыл бұрын
Sorry to report this but... You´re only partially right. Steamlocs, like all steamengines, do not run on vapour but dry steam. See this video to get the full picture: kzitem.info/news/bejne/so-EuJyCaZaVd4Y It is A LOT more complex than is shown here.
@krishnansrinivasan830
4 жыл бұрын
Nice & Thanks :)
@HorseCrazieGirl15
4 жыл бұрын
Thomas and Friends brought me here.
@rhodesianwojak2095
4 жыл бұрын
nice
@onceANexile
4 жыл бұрын
But, why dont the cylinders RUST.?
@RetailThrone
4 жыл бұрын
Informative!
@stephensfarms7165
4 жыл бұрын
Thanks. 🙏
@slycat1939
4 жыл бұрын
Thanks I learned something I was wandering about.
@stnicholas54
4 жыл бұрын
That was an excellent and very informative clip. Gotta dash ! .... whuff chuff chuff chuff chuffity chuff chuff chuff chuff chuff chuff chuff chuff chuff chuffity whuff chuff chuff chuff chuff .............
@tendividedbysix4835
5 жыл бұрын
That's awesome, can't believe I could make an electric dynamo easier than I could a friggin steam engine, this stuff is tricky!
@fireant514
5 жыл бұрын
They should make a nuclear steam train.
@MarcusS103
4 жыл бұрын
@Aurora problem with that is if you burned through your water supply before you made it to a stop you would have a nuclear meltdown. Or if the train derailed it becomes a nuclear disaster.
@thomaspeacock9375
5 жыл бұрын
What a fantastically made video! Very informative and simple 👍👍
@insylem
5 жыл бұрын
What about directional control? Forward vs Reverse?
@DS_Fire
4 жыл бұрын
Watch this video, kzitem.info/news/bejne/w22Ep3aLpKt4oqA It gives a pretty good explanation of just the piston and directional movement.
@pkell501
5 жыл бұрын
Well I am 72 and only now learned from this video - many thanks for the excellent lesson
@labrat748
5 жыл бұрын
Excellent narrative on how a train steam engine works..thanks.
@grenadier_boom9144
5 жыл бұрын
Ok I am starting to watch stuff on how steam locomotives work because I am wanting to build my own, I get what’s going on but the valve in the cylinder doesn’t make sense to me. How does the steam get into the pistons.
@koolmckool7039
4 жыл бұрын
There's a tiny little hole that the valve doesn't cover, which is how steam gets through to the piston. When the piston moves, the valve now covers the hole, but allows a second hole to open, allowing steam to flow into the piston, pushing it in the opposite direction.
@biankafondatiova2447
5 жыл бұрын
very helpful video! thanks very much it actually helped me to do my railroads project!
@04u2cY
5 жыл бұрын
I can't begin to imagine how much damage would happen if those connecting rods breaks at full speed the engineer would be in lots of trouble.
@paulbislin8471
5 жыл бұрын
Louie Niglio that occurred several times during steam age. It had the potential to derail an engine.
@pforce9
5 жыл бұрын
The best kept secret that none of you locomotive men seem to want to talk about is the steam ejector. AT some point it occurred to me that there had to be some way to get water back into a pressurized boiler but there was never any talk about how this was done. At this time I did not even know how to phrase the question. It took about three or four days putting the question to google in various ways And then I came across the steam ejector. Finally I found a video of this component and to me, it is the most advanced thing about the entire engine. Two questions, why is it call an ejector when it actually injects and why don''t you guys want to talk about it?
@seen203
5 жыл бұрын
pforce9 Water injector www.steamengine.com.au/index.php/steam/how-it-works/37-watinj
@paulbislin8471
5 жыл бұрын
pforce9 where I live it is called injector not ejector. It works with the functions pressure, speed of flow and diameter. Steam from the boiler (boiler pressure) flows through a intermediate sized pipe to the injector, where the diameter is reduced by a cone, a smaller diameter results in a much higher speed but a low pressure, lower than the atmospheric pressure. This makes that the steam takes the water up. After mixing together, the now hot water with low pressure but high speed enters the pipe leading to the feeding valve. This pipe has a big diameter, so that the hot water now has a very low speed of flow, but high pressure, at least higher than the boiler pressure. It’s a bit similar to a electric Transformator: boiler pressure & intermediate diameter & intermediate speed transformed to low pressure & small diameter & high speed and then transformed to above boiler pressure & big diameter & slow speed. That‘s called venturi effect.
@katie.13
5 жыл бұрын
Don't say nuthing bout my Bex!
@JamesDTapley
5 жыл бұрын
This was very interesting! Technically steam loco's do need gears however this is the reverser and lets different amounts of steam into the cylinders.
@frankservant5754
5 жыл бұрын
Fully exhaustive and highly informative. Well thought-out and very detailed, esp the graphics and animation. Great video.
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