Worlds largest diesel locomotive on the Cheyenne turntable DD40X 6936.

I wonder how many horsepower this beast is. ???

So cool. Diesels rock!

UP donated this loco. Will it ever travel around the country again or just stuck in town??

The trucks must be specially designed to negotiate the curves.

Is this 2stroke engine

4 axle in one bogie?

Upgraded SD70M-2

Which country

I believe a person who stands 7ft should walk inside of the cab too

Can't wait to see the centennial in the Silvis shops back in action

Sadly, Union Pacific Railroad without approval of the shareholders gave this engine Challenger 3985 and another steam engine away. Just wrong!

Holy Cow !!!!
It is HUGE !!!!!

My Favorite locomotive! Such an awesome honor to see one working and sounding perfect!

Time to get out the old track straightener ....

Like the horn

I'm impressed but still in love with the Big Boy. 😊

Imagine that paired up behind the 4014!!

Best SOund Like That!

Really good catch. Im a new subscriber. Greetings from Port Saint Lucie, Florida ! I also watch Roman's Milwaukee Roads train videos, he films in Wisconsin covering Wisconsin and Southern railroad and others.

The engineers don't wave from the trains anymore, not like they did back in 1954, they got computers"n" diesels "n" things but engineers. Don't wave from the trains

To see the engines work, go to the Moffatt tunnell on the west side of Berthoud pass in Colorado. Watch the coal trains going west as they climb the continental divide.

SD 40s?

Trainz Simulator: DD40X Review!

When steam enthusiaths look at diesel wheels:

:Oh look an 0-8-8-0 articulated diesel😇😛😜😙😁🤨😐😄🤑

Begob, I remember visiting the Cheyenne turntable in 1957, my grandfather worked there for 40 years.

i remember being at a train crossing in Australia with the iron ore locos in port hedland and when it past me the ground was shaking really bad. it was impressive and ive never forgotten it. it was a fucking long heavy train! it just made trucks look pathetic and wasteful.

it has two engines ?!!

Wow ! How much does that beast weigh ?

This thing is literally 2 sd40 into one

So this is essentially two locos on one frame, hence the gap in the centre.
How long is it? A passenger coaches about 20m so I guess it’s about 25-30m long.
I find it interesting that it needs to rev up quite a bit to get moving.
Usually idle power should be enough to get it creeping slowly.

It's interesting to see a railroad turntable in action. I didn't think that there many of them left.

That loco is a beast

That's one big mother of a Locomotive ,Size is everything looking at this big behemoth of a beast of US Traction 😮Wow ❤️❤️🇬🇧❤🇺🇲

She's a beauty.

This steel beast brought to you buy fragile squishy little humans

The sound of the engine almost drowns out the horn!

Sad..miss that big girl

So that's the world's largest diesel locomotive to remind wow you know Pacific is getting lucky In 2019

It's very beautiful.

YOU BETTER BELIVE IT!SHE IS STILL A CLASSIC DIESEL!AND FOR HER TO STILL BE RUNNING AFTER ALL THESE YEARS, IS TRULY AMAZING! SHE LOOKS GREAT ,AND SHE SOUNDS GREAT,TOO!

This unit is no housed in the shop i work at. It has a few issues so i'm going to get to fix them. I hope my boss and i get to test her out on the fast track

Just to put into perspective how large this diesel is: the Cheyenne turntable is built for Challengers and can handle Big Boys as well.

Mostly diesel loco fleets and still using turn tables, us is actually in the stone age of railways

I just want to see it paired with the big boy on a train

Always wondered what those short little air hissing noises are. All modern diesel locomotives seem to make them at low speeds.

This is a very impressive diesel locomotive model, the DDA40X is the largest diesel locomotive ever constructed and produces the highest amount of horsepower of any single diesel unit at 6600 hp. Union Pacific rr had an impressive roster of historic steam/ diesel locomotives that were large in size and power output, which made them a unique & interesting railroad company.