Inside the Worlds largest operating diesel locomotive Union Pacific DD40X 6936 Cheyenne, Wyoming.

Take a peek inside Union Pacific DD40X, the Worlds largest operating diesel locomotive. This locomotive typically travels with the Union Pacific 844 steam engine during excursions. Filmed during the annual steam shop open house of 2009 in Cheyenne, Wyoming. For a in depth look at another DD40X locomotive inside and out click this link www.youtube.co...

[@travelingtom923]

For a in depth look at the DDA40X both inside and out see my other video here kzbin.info/www/bejne/e4Oxlq1_n8lgfac

[@fixitdude74]

the only surviving DD40X unit still in service, such a beast of a machine, love it.

[@wednesdayfrog139]

13 survive, 1 never retired

[@bigskypeach406]

More proof that anything double D is a good time

[@indridcold8433]

It is also proof that size does matter. How you use it means nothing if you are driving a tiny choo choo.

[@claiborneeastjr4129]

Amen to that - so very true! Just can't have too much of a good thing!

[@Shane-Singleton]

What a beautiful beast. Union Pacific sure had a love for big power. Some of the most interesting leviathans to ever roll on steel rails were born of their requests.

[@asghan]

I thought the biggest one is the BlueTiger?

[@Shane-Singleton]

DDA40X is over 20 feet longer and almost twice the weight of the Blue Tiger (DE-AC33C).

[@stilz0]

Shane, I agree. Big Boy comes to mind.

[@Shane-Singleton]

Don't forget about the Challengers too :) And I think the U50 if I remember right.

[@stilz0]

Good call for the Challengers, but the U50 has such a blunt front; looks like it ran into something.

[@LectronCircuits]

DD40X is to Diesel as Big Boy is to steam, carrying on UP's tradition of first-rate training on a grand scale. Cheers!

[@thomasavensjr.2790]

What a wonderful example of a diesel locomotive, i have to make an arrangement to see one of these massive DDA40X models in person for myself sometime in the future at any railroad museum.

[@g.springfield6866]

I've always admired the mighty DD40X - great, loooong construction, with great design and beautiful UP colors! So I invested some day some money to purchase one - it looks pretty good on my layout. 😊 Thank you for the close-ups and the opportunity to climb on of this real UP legend and take a look inside! 👍

[@57629589]

I remember as a kid, standing by a track in Wyoming as a couple of these and a really long train went by. So much power.

[@janerickson6785]

When I was a hostler in the Salt Lake diesel shop, I ran this unit and spun it on the turntable to get it right for a consist to put it on a train. Just like any other engine of that era, except longer.

[@dmorgan28]

Love this awesome massive machine. I’m a retired locomotive engineer and I love videos like this. I’m subscribing. Thanks 👍

[@indridcold8433]

That is not a locomotive. That is an Iowa class battleship for land! It is as big as two diesels put together.

[@simplywonderful449]

Basically, it IS two diesels put together. Twin prime movers, and the walkway in between is to avoid having to walk the entire length to get to the other side. IRM in Union, IL has one on display.

[@TvshkaHumma]

That's a beast of a train! It weighs 540,000LBS! I bet you can feel it coming before you see it!

[@jerrygarner8115]

WOW! That thing is really massive! Next time,let us see all the working motors. Plus,I believe those are the biggest fuel tanks I have ever seen on a train,but,that thing as big as it is,probably uses a lot of fuel just to keep all those rail cars moving! Great video!

[@themanfromcabowabo1559]

8,000+ gallons

[@bobroberts7305]

I posted this as a "reply" but want to make sure it's available for those who don't look at the many collapsed replies that appear below the primary comments people make: SOME DETAILS ABOUT THIS MONSTER: The DDA40X is a 6,600 horsepower D-D diesel-electric built by the General Motors EMD division of La Grange, Illinois for the Union Pacific Railroad. Nicknamed "Centennial" and "Big Jack", the DDA40X uses two diesel engine prime movers, each rated at 3,300 horsepower. The DDA40X is the most powerful single-unit diesel-electric locomotive ever built, although more recent designs such as the GE AC6000CW and EMD SD90MAC have come close. It is the second most powerful locomotive ever built, exceeded only by the Union Pacific GTEL gas turbine units. It is also the longest single-unit diesel locomotive ever built. Forty seven were built between June 1969 and September 1971. The units were numbered from 6900 to 6946, with 6936 still in service. The DDA40X is 98 ft (30 m) long. The frames were fabricated by an outside contractor, the John Mohr Company of Chicago, since the frame length exceeded the abilities of EMD's plant. Using more than one prime mover in a single locomotive was not new; the E-series were popular dual-engine locomotives, and Baldwin had produced (but not sold) a locomotive with four diesel engines. The 'X' in the designation stood for eXperimental, as the DDA40X locomotives were used as the testbeds for technology that would go into future EMD products. The modular electronic control systems later used on EMD's Dash-2 line of locomotives were first used on the DDA40X and the 4200 HP SD45X. The locomotives were the first to be able to load-test itself using its dynamic braking resistors as an electrical load so that external equipment was not required. The DDA40X used the wide-nosed cab from the FP45 cowl units. This design was superficially similar to the Canadian comfort cab introduced by Canadian National soon afterwards in 1973, but it lacked the structural reinforcements introduced in the CN design that were carried over to future wide-nosed cabs. By 1974, averaging 22,000 miles a month, most DDA40X units had run over 1,000,000 miles and needed more maintenance. In the early 1980s, this factor, along with other issues including the higher efficiency of newer locomotives such as the SD40-2 and the national recession led to all 45 remaining units going into storage. In early 1984 as rail traffic rebounded, Union Pacific brought 25 DDA40X units out of storage and rebuilt them to return to service; 15 unserviceable units were retired in June that year. All DD40AX units were retired by May 1985. Thirteen examples survive. Number 6936 is still in service with UP, though mostly in excursion service. 6922 is in a train museum: www.ci.north-platte.ne.us/parks/cody-park/ A Train Display is open from Memorial Day through the 4th weekend in September from 10:00 a.m. to 8:00 p.m. The display consists of the restored Hershey, Nebraska depot, a Union pacific challenger steam locomotive (3977), a 6900 series diesel locomotive (6922), mail car, baggage car and caboose, along with other railroad memorabilia. No charge. visitnorthplatte.com/attraction/cody-park-railroad-museum/

[@friendlyfire2615]

Bob Roberts when we said we wanted details, we didn’t want reading homework.

[@lukacvenic3758]

They are realy super, super engines. I can't belive she is that old. I'm from Croatia and i can tell you, we can only dream to have such a beauty in our country. I like U.S. trains and engines. Thanks for posting this.

[@wendymcfadyen-allerby6142]

tyvm for the info

[@Makitaization]

Now I heard long ago they took them out of service because of frames cracking. So that was just a rumor?

[@DNDBOT]

Good read ..

[@wernerdanler2742]

This is in much better condition than the one you did the detailed tour of. It has been well maintained.

[@bobbynickerson7631]

what a GAWDDAM BIG ASS train!!!! , my bucket list to see her up close some day!? someday i hope..

[@surendramenon4669]

Much appreciate the Maintaince Team, The Yard is so clean. Well kept, May this be Thumb Rule. ❤️

[@nunogirao8097]

1:22: 100ft of locomotive and this is the place to drive it. Well done, designers!

[@reesecole2031]

What did you expect an AC4400CW's cab?

[@balasheeda]

I hope you were not expecting a bed in the back 😉

[@glennsrailroading]

They should have had the doors open. I want to see the prime movers and what else is under the "hoods".

[@travelingtom923]

I will be making a video in the future, going into more detail, of the DD40X including opening the carbody doors and other parts of the locomotive. It will likely be either be in Ogden or North Platte.

[@bonkeydollocks1879]

Glenn Schwass same here

[@tonkingulfyachtclub8111]

Yes, that's why I clicked...to see "inside," meaning the engines.

[@4gauge10]

@@travelingtom923 You'll see a pair of V 16-cylinder 2-cycle turbocharged diesel engines capable of 3,300 hp.a piece. These are common GMC built 567"prime movers".(6,600 hp.total output at full throttle) The engine is capable of about 130,000 pounds of drawbar pull.

[@HighAway]

have you yet??? i wanna see the real gut of a beast that's diesel powered!

[@wyocoloexperience7025]

These beasts roar through Laramie, Wyoming every day. I love it.

[@Elfnetdesigns]

Maybe the SD70ACe's or GE's but not this one. the DD40X's are museum pieces now

[@crazyman762]

I toured the Cheyenne shops in 1997. We had the run of the place. If a door was not locked we were allowed to go in.. The DD40 was there but inside. I did not climb up on it. The complete business train was there but locked. The FEF and Challenger was there. Only the FEF was able to run. The Challenger was having repairs. GREAT tour. The above clip was nice, but fast. I wonder if it was a permission given walk through or a hit n run. Given the chance to do it again, I might have done the same thing! Thanks for sharing.

[@warrencaudle4995]

I lived near the Hinkle OR yards. These Centennials used to come rumbling down the rails. largest consist I ever saw was 3 of them, plus 2 or 3 SD40-2's on the rear, headed up the Blue Mountains. They were indeed a sight to behold.

[@warrencaudle4995]

and your comment is what?

[@rusty49able]

Jeeze talk about tractive effort ! How were you able to start the train w/o tearing it up ? ..... 12 or 18 traction motors on the SD's and 24 on the big boys that equals 36 or 42 Traction motors ! We were only allowed 24 working TM's on our property (Class 1 RR on the East Coast) on account of potential train handling problems.

[@warrencaudle4995]

The helpers are still used on the Blue Mountain grade from Hinkle. It is a 2% and higher grade.

[@rusty49able]

that is one hefty grade ! Lots of fun no doubt challenging !

[@johntapp1650]

@@warrencaudle4995 as to the comment, let me submit: consists have split up with the advent of remote control. The DDA40X even had circuitry adaptable to this technology, making this one of their undoings; 2. The four-axle "D" trucks. They were long and straight, and most likely fought curves like steam engines. Powerful and impressive they were, and long lasting. But the days of high head end power are near over.

[@BRP42]

Wow! Just Wow! Amazing how neat and clean that engine is!

[@daveicc495]

My father would have been in awe if he saw that. He worked for the ICGRR when the locomotives were going out of style. I wish I could have showed him these videos.

[@MarkBrown5150]

Now that is a piece of equipment. I have seen it in person last time 844 came to Roseville, CA

[@randallbyrd1973]

What a beautiful locomotive Thank you for sharing

[@mark97213]

I always had the impression these engines had some livable space inside somewhere. Learn something new everyday.

[@bradhardy2629]

They put us up in motels at the end of the trip. .

[@Blackscorpion1963]

Stunning vid! I wouldn't have had the necessary courage to prevent the temptation of either 1. starting her up, or 2. driving off in her...

[@Trinigrover]

What a beast, it looks like the union of two engines into one.

[@chaosdemonwolf1]

It basically is.

[@MrMopar413]

Great video never , ever get tired of this stuff.

[@bobroberts7305]

If you want to see one of these (and cannot figure out where to find this one, still in operation): 13 still exist: 6900 - Kenefick Park, Omaha, Nebraska 6901 - Ross Park, Pocatello, Idaho 6911 - Mexico Museum of Technology, Mexico City 6913 - Museum of the American Railroad, Dallas, Texas 6915 - Southern California Chapter, Railway and Locomotive Historical Society, Fairplex, Pomona, California 6916 - Utah State Railroad Museum, Ogden, Utah 6922 - Cody Park, North Platte, Nebraska 6925 - Stored at Chamberlain, South Dakota, on Dakota Southern Railway 6930 - Illinois Railway Museum, Union, Illinois. Used as a control cab only, engines and motors are currently non-operational. 6936 - Still in service with Union Pacific Heritage Fleet 6938 - North Little Rock, Arkansas (Sits in front of Jenks Locomotive Facility) 6944 - Museum of Transportation, St. Louis, Missouri, sent to Altoona in July 2014 for cosmetic restoration, which was completed in May 2015 and is now back on display at Museum of Transportation, St. Louis, Missouri in June 2015. 6946 - Western Pacific Railroad Museum, Portola, California. The last DDA40X built. This locomotive is fairly complete and on static display.

[@riochcogan8913]

This is my favourite U.S. diesel loco. Thanks for the post.

[@verastaki]

That's the largest EMD locomotive ever built by Electro-Motive Division. One of my favorite locomotives. I've heard they had trouble on curved rails and would derail because of the size of it's trucks. 8-axle unit. Sad that they are not as common these days.

[@travelingtom923]

Yes on some tight curves one wheel tended to pop out. I remember when a DDA40X came to Seattle one time to use the wye. They had to grease the rails first.

[@dudleyrathborne9849]

hi there . i was surprised by the comment of the big trucks getting caught up on curves . Had the same problem with an H.O . scale model . So now it sits as a display peace .

[@JMVvideosByDjMarty]

I read some years ago they will build a new one like that, but something longer and with 10 axles...

[@scooter95mph]

It was the 4 axle trucks that did this locomotive in. Kept straightening out the curves

[@frankcrawford416]

What a sweet ride!

[@sadorusvillageof1702]

Officially it is DDA40X. Also, the "hole" in the middle is a walkway so you don't have to go all the way to the end of the unit to get to the other side. The first 3 units were delivered at 7000 hp! The were later de-rated to 6600 hp by changing the injectors. Don't know why. You would think that as great as these units were at 6600hp they would have been Super at 7000 hp!

[@tomedgar4375]

I was told they caused more wear on the rails due to weight and power. Might be the reason for derating

[@EntertainmentWorldz]

great train video

Fantastic. Thanks for the share and she sure is a beautiful piece of engineering. Take care.

[@dudleyrathborne9849]

Way back in the late 1960's EMD made 3 demonstrators . The DD-25 ( It may be DD-50 ) One was an A unit ,the other 2 were B units . While EMD was sending them out on tour , the Great Oil Embargo of the very early 1970's struck ,and these Monsters where no longer cost effective . The only thing i have of this model , is an H.O scale ..A Unit , which is proudly displayed with my other collection of Diesels . While it is true that i fell in love with model RailRoading , i now use them as static displays . And i am an avid Model builder . As such i have re-painted and marked both Passenger and Freight and Locomotives into both CPR and CNR markings . I moved beyond playing with them , into useing them as Models . It has given me a life time of pleasure ....DGR

[@FFred-us9tw]

Their was never a DD25 or DD50. The Predecessor to the DDA40X was the DD35A and DD35B. UP bought the demonstrators and then ordered an additional 25. UP and SP were ultimately the only railroads to buy any and SP only had 3.

[@dudleyrathborne9849]

@@FFred-us9tw Hi Fred ..Thank you for your reply , and for correcting my major mistakes . I was considerably younger back in the 60's and 70's .I was getting confused between the U-50 and the DD-35a .Thanks for your help .

[@FFred-us9tw]

@@dudleyrathborne9849 that’s what we’re here for. To learn!

[@dudleyrathborne9849]

@@FFred-us9tw Hi Fred . Back in the 60's i was a kid with an 12 by 4 foot train table . I also had the good fortune of being able to hang out at the Montreal West train stn when CP rail was running 3 premium passenger services . The Canadian , The Atlantic and the Quebec City run . I was lucky to also see the NY Central ,and the Erie Lackawanna passenger services . That was great fun .Talk to you later .

[@williamrichardson9475]

American super power, what a monster.

[@NaYawkr]

To Take a DUMP the driver puts it on auto-pilot and launches one over the side, or he waits to stop at a McDonald's.

[@markflaherty7960]

Beautiful engine. I would have thought the interior would have been more high tech. More comfortable seating as well

[@harrimanfox8961]

It was built in 1969..

[@daleburrell6273]

Well, "...beauty is in the eye of the beholder"-!!!

[@alanfbrookes9771]

I used to frequently see these Centennial units in Oakland, California. They had such a short life. I never understood why they withdrew them from service.

[@TheTheratfarmer]

EMD is the best locaomatove and nuc. power plant back up generator.

[@jimjones8300]

I love locomotives I guess that comes from working on the water with massive 16 to 20 cyl engine's . I really want to work the railroad now

[@jarhead4God]

you are about 30-35 years to late. Working on railroads (at least it was on the SPRR) in the late 70's through the late 80's was a blast. But after the up merger one had to keep a watchful eye over his shoulders because a trainmaster would be lurking ready to give you an unpaid unscheduled vacation if you failed to dot every "I" and cross every "t"

[@kdolo100]

Wish it was more comfortable inside.. Then again, you have to always be alert.

[@shadowsdad903]

Looks like a nice day in Cheyenne.

[@cellogirl11rw55]

Thanks for sharing!

[@robertross804]

thanks from liberty ky nice tour

[@Vonwra]

Guys what your looking at is Rhodes islands with wheels

[@2kanchoo]

I heard of these but didn't know they were so old, or 8 axle. I can't imagine 6600hp with no computers to mitigate wheel slip. These bad boys could rip knuckles easy haha.

[@TheKurtsPlaceChannel]

Very nice video and fun to watch. Have a nice day.

[@jimmclaughlin5930]

So one of those is the equivalent of two SD40-2 must have been something to see three of those together hauling a couple miles of cars behind.thats 6 SD 40-2

[@Finsami71]

That's more like a damn ship ...

[@bestamerica]

' wow large engine train with 8 axles... that is so big super heavy duty

[@mccoy79productions66]

Nice job!

[@raymondbermudez5660]

This is an awesome locomotive I have two questions the first one is why didn’t southern Pacific use these types of locomotives? And second why did Union Pacific retire them?

[@12345anton6789]

Raymond Bermudez they are 40 years old, to expensive to maintain and operate.

[@raymondbermudez5660]

Henning Kaasa Thank you 🙏 my friend for answering my question I was wondering about the locomotive

[@Putaspellonyou]

@@12345anton6789 50 years old!

[@themanfromcabowabo1559]

They retired them after 10 years of use in 1980ish. Some had 2,000,000 miles on them.

[@jamesdupuis4821]

Great video and it's a first time that I noticed that it has a 3 person crew in the cab

[@rolpfeiffermuller935]

Th2 sharing the Outstanding vid.Bliss

[@wildbill9919]

Nice vodeo. l've been inside the cab of UP 6922 in North Platte Nebraska.

[@jimjones8300]

What's down in the front behind that door ? Damnit I want to see it all inside and out !!

[@travelingtom923]

Working on video as we speak where I open nearly everything on the DD40X and explain how everything works.

[@Justrandomvideos-2023]

Almost two in one locomotive I've seen one and only one of those 9 years ago I've been playing "sim train 3" recently and getting gold metals for my success in missions i bet I can operate that diesel

[@syedjavedahmad9719]

wow never seen one with huge diesel tank. you did not show the bathroom. why?

[@travelingtom923]

See this video for the bathroom. kzbin.info/www/bejne/e4Oxlq1_n8lgfac

[@db417]

I don't know if it's still the largest. The Indian railways DLW-EMD Wdg 5 locomotive looked pretty big too. Don't know it's specifications but it looked quite big.

[@harrimanfox8961]

The Indian locomotive is dwarfed by this in all stats

[@conantdog]

Wow that's quite a large fuel tank 👍

[@skullfracture2]

Plot twist… OP didn’t get permission to do the tour and was just wandering through the railyard and saw the train. 😮

[@eduardogallegos8645]

Gracias por todo y espero que le den la oportunidad a union pacific

[@ericseckman6138]

Looks like the yard in Cheyenne Wyoming near the downtown overpass

[@tracylarson1935]

Those engines are effectively two SD40-2 on one chassis

[@RWMorgan39]

GP40-2

[@martygann834]

No, they are 2 GP 38s as well as the dd35 locomotives

[@JohnBehring]

That is a clean engine.

[@TheSwamynathan]

Nice to see a bell near the steps.In Aussie trains & LCs bells are there.

[@davo8955]

Would love to have seen what’s powering it.

[@voidjavelin23]

2 EMD 16-645 prime movers

[@kelharper7971]

I sure wish people would ever look at posters and labels and things like that long enough for the viewer to read them. Or better, read them all outloud, and point them out so they can see all the details. Like what was up with the "engine start" poster? What were all the controls? And are you allowed to be on that locomotive? I never dare climb on one for fear someone will show up and arrest me. Although I'm always sorely tempted; even in my 30s I can't help but feel like I would like that job very well. I've never driven a locomotive, and yet an can see in my mind the feeling of opening the throttle, and feeling the vibrations, and feeling the weight of the train take up behind me. Interesting.

[@travelingtom923]

I will be doing a very in depth review of this type of locomotive pretty soon. I will be explaining how everything works and I will be opening all the doors. That video should explain anything and everything you need to know about the DD40X.

[@mitchellyardanoff4666]

How many still exist today? Does Jay Leno own one?

[@atmtech72]

According to Wikepedia There is only 1 still in service though 13 have been preserved and 34 have been scrapped.

[@adrianmontelongo9707]

Beautiful nice trains.

[@FEDERALSIGNALTECH]

What a beautiful piece of machinery from what I have read it's two SD 60 engines put together and I was wondering if it still has the original NATHAN AIRCHIME M5 Horn and I'm not sure about the engine if it was the dual SD 60 Engines or something else but I bet it guzzles the fuel tank capacity pretty quick and it's a beast and it's definitely the king of the diesel locomotives in my opinion to bad EMD DIDN'T MAKE IT A FULL PRODUCT and I bet other railroad companies would have loved to that kind of power not to mention that the GENERAL ELECTRIC evolution hybrid is good but not the king even though it's cleaner and greener on energy but I prefer the power over efficiency as a matter of fact I have a gaming PC that I love but it's one of the energy star 80 plus efficient ones that really sacrifices performance and it's an ACER PREDATOR ORION 3000-UA91 That is maxed out with a NVIDIA GEFORCE RTX 3070 And then INTEL CORE I7 EXTREME PROCESSOR AND A 1TB HDD AND A 512 GB SSD BUT IT HAS A POWER HUNGRY GRAPHICS CARD THE NVIDIA GEFORCE RTX 3070 Witch at least needs 650 watts of power not 500 watts witch below the minimum specs and I still don't know why ACER did that but there are some with the 650Watt power supply but mine was not one of those.

[@travelingtom923]

The SD60 engine is a 710 which has slightly more cubic inches per cylinder (710 to 645). I do believe it has the original horn.

[@Cr4z3d]

Is that a whistle on top? Very interesting.

[@travelingtom923]

No there is a steam locomotive nearby. The Union Pacific #844.

[@pooliramesh4497]

Beautiful diesel engine

[@anthony851]

The 4 axle bogies would require easy curvature, not something we have in NZ. Anthony

[@CardboardSliver]

They actually flex in the middle.

[@marisarap5788]

I had a question which your film did not answer! Is there a bathroom for the operators to use? There must be..

[@FFred-us9tw]

Yes, down in the nose.

[@jonathanerickson1543]

Sooooo, do train crews need to train in on specific engines? Or are there pretty universal systems used?

[@voidjavelin23]

not much tbh because twin diesel prime mover/engine locomotive already exist before DDA40X was a thing like the E units

[@sttreetboy]

They should grease the door or is it kept creaking so that it makes a ghoulish noise to keep the pilots awake?

[@freakindawgen]

Wow that was interesting. Would have like seeing inside the panels. What is that area that goes into the nose?

[@travelingtom923]

That is mostly empty except the toilet. I will be making another video on the inside of this locomotive including opening all the doors in July.

[@3melendr592]

Pizza, Bob Roberts did us well by his comment!

[@pshreekumar]

One enormous girl she is! How many hp did you say? What's the difference between DD40X and DDA40X? Thanks for shooting and sharing. Cheers!

[@davidreyes2298]

The dda40x has 6'600 horsepower I not sure with the difference between a dda40x and a dd40x

[@gbopemioyediran9384]

No one's talking about how hard it will be to rerail in case of derailment.

[@hoormazdshahhoseini7665]

Extreme engineering.

[@kcirrednosrednad3596]

Everyone calls me Double D too. My initials.

[@robbleeker4777]

I am playing TSW, (Train Sim World: CXS Heavy Haul)... This looks exactly like the game..... I'm pretty sure I would be able to drive this beast away....

[@mr.railwaysofficial]

Nice massive loco

[@dankerr6914]

Where was this video taken? It looked like there were a couple Milw Rd engines and a caboose there too.

[@CHEVYSORCROWNS]

Is there a bathroom on board?

[@FFred-us9tw]

Yes, in the nose.

[@dmfraser1444]

The ergonomics in the cab seem no better than the 1946 Alco I rode in 12 years ago.

[@clubbingtracks]

Top vidéo Big likes 👍

[@stripervince1]

Why didn't I ever get to work on locos like this when I was a conductor. All we ever got was old ns rejects. Gp38s and 40s and sd70s

[@stanpatterson5033]

Hey, SOMEBODY has to work on the junk. Obviously you were good at it, so they just let you keep working your magic.

[@stripervince1]

Stan Patterson apparently stan

[@donnkelley6823]

Genetics

[@jonathan_careless]

What's in the tanks on the outside along the railing?

[@raymondbermudez5660]

Jonathan Careless Those are fuel tanks the smaller tank resting above the fuel tank is the air tank for the brakes if I’m not mistaken

[@dennislapalme4385]

Those are sand tanks. The locomotives use sand for traction.

[@Muggar62]

The petrol tank looks like a 50 meter swimming pool . . .

[@davidklink3084]

So is csx the next biggest locomotive or not just thought I would ask?

[@voidjavelin23]

i dont think so since they dont even try to do some crazy superpower single unit experiment like UP does

[@oldpete3153]

Would have been a great video if the camera wasn't panned so fast.

[@travelingtom923]

Will have a video up very soon, of a in depth look at the DD40X in Nebraska. It will be at least a hour long.