I think I can I think I can (AKA Locomotive thread)

[ThatOneEuroE30]

Am I the only one who's curious to know how many psi these things push. I bet its a ridiculous amount.

[Exodus_2pt0]

26psi in notch 8.

I did the math the other day, horsepower = torque x rpm / 5252.

Worked out to around 20,000 ft. Lbs of torque.

[ThatOneEuroE30]

26psi in notch 8.



I did the math the other day, horsepower = torque x rpm / 5252.



Worked out to around 20,000 ft. Lbs of torque.

Damn that's alot

[payney8]

Have a read of this big girl. I did a cylinder head change on one. Was very impressive.

http://www.mtudda.com.au/attachments/article/246/20V_8000_M91_Low_Load_Factors.pdf

9100kw, I have seen them touched up to 9500kw on a special order.

4000 series, Ive done a few rebuilds on these.

https://www.youtube.com/watch?v=Qalfs2RQhBg

https://www.youtube.com/watch?v=uAnsqQnOPeA

[Exodus_2pt0]

Current view.

[15Michaeljoseph]

So, what's the timing belt like? ;)

This is freaking awesome! I love trains and big stuff! trains are like these big, metal, hulking, giant, intimidating, creatures and I respect the shit out of trains. So cool to see what goes on behind the scenes!


--Mike

[Exodus_2pt0]

Moar turbo



And that's just one of the baby twins on the 480V AC generator for the lights, A/C systems, ect.

[Exodus_2pt0]

Saw these on the tracks that run beside our shop today.

[15Michaeljoseph]

some neat stuff for sure!


--Mike

[Exodus_2pt0]

Been crazy lately. These locomotives have been moody.

Had a dynamic brake grid catch fire a few weeks ago. It was fun times climbing up to the top with a big ass fire extinguisher to save the multi million dollar equipment!

Then on the very next loco we inspected, during the outbound load test we had another set burn up. Luckily this time it opened up and the computer shut everything down before it became a hazard.


A little technical info as to what you are seeing. As we know the locomotive uses a diesel engine attached to a generator to power the 4 electric motors/axle sets. During some braking conditions, the motors become the generator in order to put a load on the axles and slow the locomotive without using the brake shoes. They are damn good at it so the energy is then routed to these resistor banks, and dissipated as heat. The energy is also used to power 2 blower fans.

The grids also serve another purpose. During load tests, the energy from the main generator is routed through them in the same manner.

And, snapped this one this morning. Early morning in the office today.

[15Michaeljoseph]

this is so sick man i love trains


--Mike

[Dozyproductions]

yeah man, you're serving every boys early childhood's fantasy. Keep this thread updated!

Now all we need is some one who works on a bagger 288 ;)

[ttrousdell]

You have an awesome job OP. Ive worked with those EMD engines a lot. Old American muscle.
Although originally developed for trains a lot of them have found their way into tugboats. Ive worked on a few old boats from the 60s that had dual V16 EMD 645s. One was this one in Philly harbor.

Engine front

Rear of the engine coupled to reduction gears. On right out little detroit diesels for power generation.

Video i took interning.Turning the engine over on air. Roots blowers for forced induction.


Did someone say big turbos?

[bikerbill2021]

And, snapped this one this morning. Early morning in the office today.

still as cool as always, still got me thinking about the future :D

so to get these things into your shop, do you personally drive them in? have a conductor drive them in? or some kind of "tug boat-esque" system and push them in?

[Exodus_2pt0]

I am a certified "Hostler" so as long as I have another Hostler to be my ground man, I get to drive them within the service track. Most of the time the night crew Engineer will leave it in front of the shop. That way we can do our inbound load and running tests, then pull it in for service.

Pretty awesome feeling moving a 280,000 pound machine.