The 10 Most GENIUS Design Features On Locomotives!

In today's video we go over just a handful of features that keep the engineering marvels known as locomotives running smoothly. From glycol-lubricated air compressors, to guru valves, and everything in-between, we hope to shed some light on just what's going on under the hood of these behemoths.
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[@Southern_Plains_Railfan]

Merch, anyone? okieprint.com/SPR/shop/home

[@Southern_Plains_Railfan]

@@francescomolaro5640 Here you go discord.gg/fUsaYCcXXu

[@OceanStateRail]

I’d just like to congratulate the GURU valves out there for saving hundreds if not thousands of engine blocks.

[@MrGus.1]

Who replaces all that coolant prior to the next startup?

[@sterlingodeaghaidh5086]

@@MrGus.1 maintenance, if its sitting long enough to freeze without an auto-start cycle (used to keep electrical system charged), then its in storage and would be serviced anyway before the next use.

[@alanmurdock4319]

It's usually not the block that cracks when frozen but the fuel preheater, lower piping, and air compressor on emd. GE, the preheater, lower piping, and water pump.

[@alanmurdock4319]

@@MrGus.1 We do at the shop.

[@alexschneider8494]

I worked on locomotives in St. Louis and in the winter time we’d zip tie the guru valves so they’d stay in while we were getting the water warmed up in the system.. well one of our guys forgot to cut the zip tie free at the end of the day and turned the main breaker off so the locomotive could no longer auto start. Guess what happened lol

[@rallymodeller]

Honestly surprised you didn't cover radial steering trucks. The fact that locomotives can steer after a fashion is kind of mindblowing.

[@Fullerton_Railfan7706]

T h e y c a n s t e e r?

[@Southern_Plains_Railfan]

Yeah, IIRC, the two outer wheelsets can pivot ever so slightly when going around curves. It reduces wear, especially on the flange. Radial Steering isn't very common these days, but it's out there.

[@ralfie8801]

UP disabled all of theirs because they cause ride quality issues unless you stay on top of the heavy truck maintenance required to prevent those issues, and they don’t rebuild their trucks very often.

[@jacksonwhittier3646]

I live in Oregon and a lot of locomotives used by the short lines have them. The Central Oregon and Pacific uses them on the Siskiyou line after Roseburg because the turns are really tight!

[@Truthseeker4449]

I was expecting some clickbait garbage, but I'm delighted to actually hear some good technical information and some things I've not heard before. I'm eager for more!

[@Proj2008]

Nice catch of LPG04(Sterling, IL to Rochelle, IL Local) @4:23

[@Southern_Plains_Railfan]

Thanks!

[@Train_Developer]

Fantastic video Bro 😎

[@Southern_Plains_Railfan]

Thank you!

[@Train_Developer]

@@Southern_Plains_Railfan your welcome Matey 😎

[@samueljackson8020]

I like the new intro

[@Southern_Plains_Railfan]

Thanks!

[@Lost-In-Blank]

I love these kinds of technical details !!!

[@SoCalOCRailfan]

Amazing video! One of the best train video topics to discuss, and I learned quite a lot of stuff I didn’t really know behind the scenes of these locomotives.

[@Southern_Plains_Railfan]

Thank you, I'm glad I could teach you something new!

[@davidhollenshead4892]

Could you please cover the wired and wireless control systems that link the locomotives together????@@Southern_Plains_Railfan

[@bgmcc907]

I spent my entire career in and around the railroad industry, and that’s the first I can ever recall hearing about floating / rotating piston heads.

[@alanmurdock4319]

The EMD does, GE fdl series does not. Although we do not have EMD tier 4's, thankfully, so can't say about them.

[@carllinden533]

I want to see more of these please! Whatever that's worth.

[@kavemanthewoodbutcher]

Friggen great content. You didn't mention the toilet in the nose of many locomotives. Not many people know about them, despite the need being obvious. Also, a sequel needs made, those air compressors sound pretty interesting.

[@James_Knott]

Yep. I've even used them. Years ago, I used to work for CN Telecommunications and often rode freights. They were located right beside the door, before you went up the steps into the cab. It's amazing the things you remember after almost half a century! 🙂

[@jimsmith9819]

its only in the nose of the wide cabs

[@JohnGeorgeBauerBuis]

@@jimsmith9819I’m not sure how the units with steam generators were designed, but I have seen diagrams that show a cramped (limited headroom) toilet in the nose of traditional cab EMD locomotives.

[@archiebunker7688]

No mention of the GE Crew Comfort Cabs with noise reducing and insulation/ air conditioning to help keep crews cool in summer heat and warm in winter. Before that came about often irritated crews hated their working conditions.😢

[@dj196301]

Nothing but gold here. Thank you.

[@kens.3729]

Your Videos is getting more Impressive and have Details that the majority of us never even knew existed. You obviously did your Homework in School. Thx! 👍🙏

[@Southern_Plains_Railfan]

Thank you so much!

[@chetumaire]

Speaking of a GP60B, There's at least 4 in Spokane, WA engine shops right now.

[@AndreiTupolev]

Well, only a DC generator can be turned as a motor, an alternator can't, so a locomotive with a main alternator will be started by a starter motor

[@LM-fg7vi]

On GE ac4400 locomotives, a switch connects one of the traction motor inverters to the 3 phase main alternator and uses the alternator as a 3 phase motor to start the engine.

[@Robert-cu9bm]

Alternators can be motors.

[@mikefochtman7164]

Lot of alternator rotors have a sort of 'squirrel cage' winding (fancy name is amortisseur winding). It stabalizes phase currents when generating, but can also be used as an induction motor for starting.

[@Class43]

Amazing video!

[@Southern_Plains_Railfan]

Thank you!

[@Blaze06]

As they said in the days you could see any locomotive on the rails, “you never knew what you would find”

[@AndreiTupolev]

3:25looks like the toilet drain 😂

[@Southern_Plains_Railfan]

lol

[@IronWheelProductions]

Fun video. Always am excited to see new videos that you post weekly.

[@Southern_Plains_Railfan]

Thank you!

[@jaredkennedy6576]

Dynamic brakes, nose toilet, and radiator airflow are a few topics worth a bit more explanation.

[@Penncentral-vr6mg]

A Dash 9 in warbonnet paint is defiantly my favorite scheme of all time

[@alanmurdock4319]

Unfortunately they have faded to pink and grey now. Some of the 600's were sent to Mexico to overhauled to the c4 with ac motors, we have had nothing but trouble with them since.

[@CentralIndianaRailfan]

Another thing about the main gen starting the locomotive is that early EMD’s would do the same thing, primarily in the prime days of EMD 567 prime movers. Something neat to mention would be the fact that the diesel engine does not have a traditional engine block in the fact that they have almost like hatches on he side (we call them handholds) that can be opened to view into the crankcase and into the scavenging air box, the block isn’t a solid block and has a whole system inside of it for airflow into the block. The blower hump on the side of EMD’s is being fed by the auxiliary generator which is battery charging and uses it’s electricity to excite the main gen, it also controls some smaller electronics. I can provide pictures of a lot of things on early EMD prime movers.

[@CentralIndianaRailfan]

Also to mention is many locomotives have a system similar to a vehicle’s EGR (exhaust gas recirculation) that route blow by and some fumes back into the scavenging air box via the intake manifold coming off of the roots blower. Simple but neat system.

[@NoName-zn1sb]

its electricity

[@PowerTrain611]

Summer/Winter doors on older EMD's can be found on the roof over one or more of the cooling fans, depending on the setup. These big bulbous housings are actually an addon for some road switchers such as GP38s but are most commonly found on E8/E9 locomotives, because to my knowledge they are the only locomotives to have them built into the body. Now as far as the modern stuff, I have no clue. They may not utilize such a thing anymore. Those "idiot bars" on the Aux Cabs also ground out all the power in the circuits when raised so not only is no more power being sent to them, but it's also drained from them. I did not know about BNSF's Dynamic Weight Management, that is very cool! And about the compressors that use glycol an oil - Propylene Glycol is an active ingredient in antifreeze. Makes sense to me.

[@kshillbilly1967]

the summer winter door on emd series is located at the top of the inner wall between the engine and the aux cab located on and around the alt/gen unit. BNSFs dwm system seems like a good idea but has many problems and suffers from a tremendous amount of wear to the pins and chains. The chain has even worn into the truck frame in many cases. the glycol or oiless air compressors have been tested many times and so far the results aren't that great.

[@JohnGeorgeBauerBuis]

I had heard of the roof mounted ones by the name winterization hatches, but didn’t know how they worked exactly prior to this.

[@PowerTrain611]

​@@JohnGeorgeBauerBuis I believe on any locomotive other than the e8/9, they are referred to as winterization hatches. The operator's manual for the E8 refers to it as the "Engine room ventilation system." All different names for the same thing, it seems.

[@alanmurdock4319]

@@kshillbilly1967 The emd s/w door is not used since it sucks trying to get to it. I always thought that dwm was a bad idea, I worked the drop pit when it first came out, our next locomotive order will have all 6 motors without dwm.

[@davidschick6951]

Love the IAIS footage. Thanks for posting.

[@jjc4577]

Most all older EMDs that I worked on had a start winding in the main generator. These were all DC traction motors and predate the use of alternators for the main gen.

[@boxcarthehusky420]

I don't know much about diesels but i know some for steam. Fireboxes designed with GPCS (Gas Producer Combustion System) uses exhaust steam from the pistons and accessories to preheat and inject air into the firebox leading to more efficient combustion of solid fuels.

[@blabbergasted4380]

Fast & thorough for easy instruction. Thanks.

[@keithposehn]

Very cool. Need some more of these videos!

[@bodaciouslappi]

Awesome new vid, Keep up the great work!

[@Southern_Plains_Railfan]

Thanks! Will do!

[@kentstone319]

Laid 90 miles of ribbon rail for B&N when i was young (liked the job/ as operator)(Gandy Dancing) 3 good meals a day and a cot in a sleeper car for a 19 year old.the perfect job.. made the guys give me tours of the locos. Had a round house. Should have stayed and retired there

[@sam_da_man5252]

I love these videos. Could you make another video about obscure railcars?

[@paulc5333]

Those "Wide Vision" cabs on some locomotives are a Canadian invention.

[@rogerr4620]

Great video and information. Thanks!

[@buckybadger02]

I learned so much from you and your videos. Thank you.

[@ManuelDornbusch]

Thank you for this video. That was really informative to watch

[@robertmatch6550]

Great narration! Thanks!

[@garrettmillard525]

Awesome! More like this please!

[@HATECELL]

A thing that surprised me when I learned about it was the conical wheels and how they work. Since I grew up around farmers I learned at a young age what the difference between an unlocked and a locked differential can be, so I always figured that the wheels not being able to move independently was a bit of an oversight, especially on unpowered axles. Turns out the wheels are conical, and by connecting both wheels this causes the axles and therefore the train to stay centered on the rail, even in corners. If an axle isn't quite centered one wheel will be bigger than the other, and since they are forced to turn at the same rpm this induces a turn, making the bogie go back to the center. In fact, that visible rim on one side of the wheel is mostly a failsafe, and in most corners it won't touch the rail

[@JohnGeorgeBauerBuis]

The Bay Area Rapid Transit system has used cylindrical (flat) wheels, which lead to increased wear on curves. I’m not sure if they have since switched to conical wheels or not.

[@matthewcyrulik7213]

My dad was a huge train buff and taught me about conical wheels back when I was still a young whipper snapper.

[@archiebunker7688]

The cone shaped tire surface helps regulate the surface speeds of each wheel around curves yet the wheel and axle remain as one unit and axle rpm remains constant. In a curved section of track the inner rail surface is shorter than the outer rail surface so what happens is the inner tire surface will ride slightly toward the tapered smaller tire surface while the outer tire surface will ride slightly toward the larger tapered surface to compensate for the extra rail length of the outer rail. On a straight section of track the tire surfaces ride equally centered on equal tire diameters.

[@doct0rnic]

There not really conical, they are shaped to hug the shape of the rail, overtime I've seen wheels actually turn concave,

[@johnfortes2171]

Thank you for a interesting and informative video!!

[@jimhewettjr3730]

The 2 piece piston you talked about for the GE engines look like the 2 piece piston used in truck diesel engines. In trucks the 2 piece design came about due to emissions regulations & rising cylinder pressures & temperatures. Pistons used to be one solid machined piece of aluminum, but temps on the firing faces of the crown were nearing the melting point of the aluminum. Engine pistons were then redesigned into 2 pieces with a steel crown to handle the increased stresses, and an aluminum piston skirt to save weight over a 1 piece completely steel piston. The aluminum is still more than adequate for the lower piston job so it was retained. As locomotive diesels have been also facing stricter emissions requirements this could be an additional reason to use the 2 piece design if not the main reason.

[@ivertranes2516]

This definitely needs to be the first in a series. Really enjoyed it.

[@billcouch9850]

Very interesting. Good stuff.

[@inspectorgadget8234]

Thanks for the video, like it. Regards from the Netherlands!

[@penneyfalgout7869]

I always learn something from you that I never thought about.❤

[@Southern_Plains_Railfan]

Thank you! Glad I could help you learn something new!

[@bradleyjanes2949]

Excellent video thank you

[@RailfanVal]

What about the Armor Windows? They were only use for FXE, FSRR and FTVM, And some MBTA and Amtrak Locomotives such as the MBTA F40PH and Amtrak E60

[@nikerailfanningttm9046]

Armor windows? LMFAO. We call them *GHETTO GUARDS* and they are not windows. They are chain fence sections and grid iron sections made into a netting pattern that allows the engineer and conductor to see forward still while providing a safety barrier against thrown stones, bottles, bags, etc. Train and locomotive windows are not bulletproof, they are just like normal car and truck windows. That’s why *GHETTO GUARDS* are installed on select units on select roads such as MBTA and AMTRAK for runs in cities that have high crime rates and other roads such as FERROMEX use them for protection against vandalism and cartel activities. In some cases, these *GHETTO GUARDS* are installed for use in DPU and helper service on rock and ore train service on BHP Iron Ore and other select Australian mining railroad services to prevent loose materials such as ore and stone from smashing the windows of DPUS should a rough section of track be encountered while the train is in motion.

[@JohnGeorgeBauerBuis]

@@nikerailfanningttm9046I knew the window bars were to protect against debris and thrown objects, but I hadn’t heard that name, although it doesn’t surprise me in modern usage.

[@JohnGeorgeBauerBuis]

I know increasing glass costs led to the removal of some windows from locomotives and other rolling stock (including cabeese) as newer types of safety glass were required on railway equipment.

[@bks7842]

Great info, thanks!

[@Southern_Plains_Railfan]

You're welcome!

[@solarflare623]

Here’s a really stupid idea: a radial engine powered switcher.

[@LegoMan6619]

Sure would sound cool though!

[@JohnGeorgeBauerBuis]

@@LegoMan6619 yes. And it’s not the dumbest thing I’ve ever heard.

[@robertstopford1016]

A great narrator. Ideas and concepts very well explained so that most people can understand. Plus for me as someone living in the UK...the narrator's Southern "drawl" is absolutely wonderful to listen to. Thankyou! This video is a real treat.

[@catnipyfy]

Thanks, great channel!

[@Lakeman3211]

Wow! Now I scour KZbin for informative vids…and this was like taking a class on mechanical sciences!…fantastic!

[@gailmrutland6508]

*Amazing engineering!*

[@njjeff201]

Good stuff! Ty

[@pantherplatform]

Thermodynamic efficiency is what makes trains so efficient compared to a typical automobile.

[@davidhollenshead4892]

Not to mention the bigger factors that are independent of the type of locomotive. As trains have a very low rolling resistance and are very aerodynamic when considering the forces involved per ton carried...

[@pantherplatform]

@@davidhollenshead4892 that's a real fact. Unlike pneumatic rubber tires which are constantly deforming, train wheels don't depend and waste energy overcoming deformation. I have school bus tires on my Grand Marquis inflated to 80 psi and it rolls way better than it did with stock tires inflated to 35 psi.

[@thevideocamman5674]

Great video as always

[@Southern_Plains_Railfan]

Thank you!

[@pantherplatform]

Rolling space shuttle/horizontal elevator.

[@Southern_Plains_Railfan]

Lmao

[@johnelliott4320]

0:11 Rochelle IL rail park! Not to far from where I live, the UP lines on the Dekalb sub are our nothern border of our yard at work

[@oxxnarrdflame8865]

I learned a ton. Thanks.

[@Southern_Plains_Railfan]

You’re welcome!

[@colvinator1611]

Very interesting video. Thanks a lot, Colin UK 🇬🇧

[@metalgear6531]

I have never been this fascinated by diesel locomotives before

[@robertclarkson6064]

Thank you 👍👍👍

[@bearchow1929]

Cool video!

[@NS264.0-tw8xq]

NS SD60Es Have a horse head on cut out somewhere I forget where

[@Southern_Plains_Railfan]

It's on some plate in front of the blower bulge iirc.

[@onkelfabs6408]

The pneumatic assembly that enables standard breaking as well as direct breaking is also a great concept. As well as the partially releasable brake. The latter is not used on freight trains in the US though.

[@renorailfanning5465]

Brake, not break.

[@onkelfabs6408]

@@renorailfanning5465 yeah I always use the wrong one.

[@coloradostrong]

Homophones and homonyms. They're there for their specific purpose. @@onkelfabs6408

[@renorailfanning5465]

@@onkelfabs6408 🤙 No anger or condescending tone in my response. Just a correction 🙂

[@onkelfabs6408]

@@renorailfanning5465 it's actually quite funny. At work, I always write about brakepoints. It is called breakpoint.

[@chrisgoped69]

This reminds me of Mr. Rogers neighborhood when he used to show how things work in factories

[@justinmalachinski1496]

That picture of my home road (Belt Railway of Chicago) was so cool, you should come record here some time

[@Texasrailfan9021]

Nice Learning Of Trains!

[@DirtyLilHobo]

These locomotives are also a rolling latrine. The restroom, located in the cab, is a small room in either the center or off to the left side. These rooms are ventilated to the outside but those vents also leak! Nothing like the order from stale urine and other bodily emissions to brighten your day/night time in that cab on a long run! (BNSF Eng, retired)

[@mrmaster8884]

Shit in Lunch Pail on Deadman...lol

[@wargamz9051]

I think the neatest thing about EMD engines (not sure if GE uses the same process) is that the fuel is used as a lubricant for the cylinders. Same amount of fuel is pumped through the injectors regardless of throttle notch, but the governor moves a pin that opens and closes with each notch of power, alowing more or less fuel into the cylinder. Any excess lubes the cylinder and injectors then falls down back to the fuel tank. Blew my mind when i learned that!

[@PersonManManManMan]

6:30 Is that Danny Devito throwing rocks at the train

[@Southern_Plains_Railfan]

It absolutely is

[@PersonManManManMan]

@@Southern_Plains_Railfan Nice insert

[@thelovertunisia]

very good video.

[@reesewawarosky1058]

I know of a design failure on the dash 9. The air horns are mounted to low. You get more sound at 90degs from the cab than you do in front of the engine.

[@bobpaulino4714]

Nice video. Could also mention auto - start to maintain coolant temp. prior to needing the guru valve, dynamic braking (especially on Saluda !), pneumatic Independent vs train brakes, dead man pedals and tickle switches ----

[@archiebunker7688]

Add to that the changes to the GE Pilbarra units that made refueling possible in the Australian outback without having to leave the locomotive platform eliminating the risk of a dingo attack at night.😮

[@alexander10000000]

The power assembly is called the Power Pack on EMD Engines.

[@schnurrbert]

6:31 Danny de Vito throwing rocks😄

[@user-pd4cl2ty4d]

You should visit the town of Danville Illinois CSX’s Chicago to Nashville district and the NS Wabash District go through Danville so you can see lots of trains each day. And you can also see trains 255 and 256. You also can probably see coal trains there too.

[@SouRwy4501Productions]

The funny thing is that a space shuttle is actually 165,000 lbs, while an SD70ACe diesel locomotive is about 428,000 lbs. you heard me right; the SD70ACe diesel locomotive is heavier than a space shuttle.

[@shadow_wolfen]

Our older EMD, G22ARs don't have a starter motor and use the alt gen to spin rhe motor over. Kinda starts just rocking side to side and then theres almost like a drum beat sound that speeds up before the engine roars into life

[@fluffnose3386]

How is it that I never heard about the center axles on certain locos being able to be lifted up?!?! Sweet vid!!

[@alanmurdock4319]

It's just on the GE c4 truck, I have to work on these, they were an idea doesn't work that well in practice.

[@noahdoyle6780]

Neat stuff, thank you foe the video. Interesting that you sgould mention 'Space Shuttle complexity' as it was my interest in real world spacecraft that has led me to trains (real cargo spaceships would be a lot like trains - big, complex, and moving on pretty fixed paths - maneuvering is hard!).

[@mrvwbug4423]

The interesting part is, they did all of this without computers. Things like automatic throttle control for the prime mover (the engineer's throttle lever is for the traction motors), they had that figured out by the 1920s. Remote control for multi locos, was figured out by the 1930s. In cab signaling was also figured out before computers, and dispatchers could track trains to within 1 signal block long before computers.

[@JoeU21]

How about track sanders? My dad worked as an engineer on the Milwaukee Road. I remember him letting me ride in the cab and he showed me how the tracks were sanded when the wheels slipped.😊

[@GregSr]

Back in the late 70's, I was in the Air Force. I had to escort a pair of SAC railcars from Chicago to northern Maine. The military cars were placed immediately after the engines of a mile long freight train. I learned a lot during that week long journey. My question is: Can you explain what a "kicker" is - relating to the brake system? We were getting intermittent brake activation because of a leak in the air lines. The engineer referred to the problem as a "kicker".

[@Southern_Plains_Railfan]

Hmmm, I’ve never heard of a “kicker” before, but I know that train brakes automatically apply when they have no air pressure, so my guess is that a “kicker” is either an entire railcar or brake cylinder/component (line, valve, connection, etc) that is acting up due to low air pressure.

[@coloradostrong]

It is a hobo that inadvertently kicks the hose on a car while he's sleeping. Or his gear is causing the rusted air line to leak excessively because it's pushing on the lines. Hobo Shoestring laid that on me.

[@natehill8069]

6:43 9mm isnt a particularly "small" bullet, its about halfway up on the handgun scale, being more powerful than .25, .32, and .38 and has about the same power as .44 spl. Its about the same as saying "low powered locomotives like the SW-1 and GP-35".

[@matthewmiller6068]

Fully expected some kind of dumb clickbait from the title but that was actually really interesting!

[@nameless5512]

All these parts always get me a little giddy when thinking of who designed these. Cause for a huge chunk of railway history, it was steam engines doing the heavy lifting. While I’m more leaning to steam, I’m not a stranger to appreciating diesels, or diesel electrics, as they’re versatile and well engineered designs.

[@BK-oo1bl]

Emd uses an auxiliary generator to run all the switch gear,relays etc… the main gen is used for traction and d14 part of it is used for cooling fans,inertial filter motor and for loading through the SCR

[@gnarfgnarf4004]

I suggest you explain acronyms to interest a wider audience. We don't all know what is EMD, GE. PA. etc. "Prime mover"? do you mean "locomotive"?

[@CaptOrbit]

Years ago I was in an old F Unit that had a drill press set up in it

[@Routeofthe400productions]

Facts

[@Johnny35130]

Here is my vast encyclopedic knowledge of rail. My truck is black so I got a NS license plate for the front bumper. And I have a railroad grade watch. The end.

[@Southern_Plains_Railfan]

Lol

[@buzzpoluchi3217]

How about this. Ever wonder how multiple units know which way to pull regardless of the direction they are facing? Pin 8 on the mu cable is forward, pin 9 is reverse. Pins 8 and 9 are reversed in the short hood end of the loco and reversed in the mu cable. Consider the short hood to be forward. Figure it out and you will see they all pull in the same direction, no matter which unit you are running from. Simplicity of a genius.

[@alanmurdock4319]

Unless the m u cable gets crushed, then it can do lots of things you don't want it to.

[@railsandengines]

While DWM is cool in theory, we really dislike it for maintenance purposes on the locomotive. At the end of the day you still have only 4 traction motors providing power. If one goes, that unit is dead where it’s at. If you loose one or even two motors on a C6 GE you might not even notice or at the very least, that locomotive can still keep pulling freight until it can get to a shop

[@MalikCarr]

The GE C4's always seemed like weird locomotives to me. So the idea is to have a slightly cheaper ES44AC that duplicates the tractive effort of an older DC Dash-9 and you replace them 1:1 in your fleet roster - why?

[@JohnGeorgeBauerBuis]

@@MalikCarr I’m guessing to have a warranty, as older GEs tend to decrease in reliability as the prime movers age. That said, replacing the prime movers would be an obvious fix that is cheaper than a whole new locomotive!

[@alanmurdock4319]

@@MalikCarr Somebody in Ft. Worth, that never touched rail equipment thought it was a good idea on a spread sheet.

[@TRASHGHOST666]

Also notice how they use round wheels? Because square ones would not provide the same efficiency.

[@Southern_Plains_Railfan]

Genius!

[@mrmaster8884]

Bidenomics INSISTS on Square, period!

[@toddolson-cn1eb]

Makes me think about the power assemblies on ship engines being dude sized - meaning they are the size of a dude.

[@TheOneWhoPats]

Make part 2!!

[@ChefEarthenware]

I never knew those engines had single-unit, removable heads. What a good idea!

[@EBFISCHADLER]

Aircraft engines also have single unit cylinders

[@graythewolf6096]

What type of transistor, or in the case of older locomotives, thyristors are in use? Im guessing Evolution Series units use IGBTs?

[@indridcold8433]

The dynamic weight distribution system is incredibly intuitive!

[@alanmurdock4319]

It sucks. I have been at BNSF for 25 years, dynamic weight management was disliked when it came out and it is hated now. Our next locomotive orders are supposed to be without dwm.

[@stwright1977]

You answered my question of why bnsf locomotives ride so rough... 😂 Those things will throw you in the floor outta nowhere! I hate riding in those hunks of junk!😂