UP 4014?

Trains Apr 8, 2018

  1. Trains

    Trains TrainBoard Member

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    A friend sent me a photo of the 4014, and ask if I knew what the cylinder on the top front is.
    There are three, a big one, a smaller one, then a very small one on the top.
    Need to know what the small one is on the top?

    Thanks
    Don
     
  2. Mr. Trainiac

    Mr. Trainiac TrainBoard Member

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    What do you mean by “top front”? of the locomotive? The steam chests? The only thing I could find with three things on top of each other was this image: If that is what you are asking about, that is just the end of the steam pipe from the smokebox to the pistons. BC398250-311B-4F9D-BA87-ACA9C5A216AF.jpeg
     
  3. BoxcabE50

    BoxcabE50 Staff Member TrainBoard Supporter

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    Please ask your friend for permission to upload his photo, here. If not his, a link to that picture location is good to go.
     
  4. Trains

    Trains TrainBoard Member

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    I have the photo in rail image but can't get it here!
    Don
     
  5. Hardcoaler

    Hardcoaler TrainBoard Member

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    Are you looking at the various domes along the top length of the boiler? If so, the two large domes are sandboxes and between the two is a smaller steam dome. The casing you see just behind the number boards and bell is a fairing around the exhaust stacks.
     
    Last edited: Apr 8, 2018
  6. Eagle2

    Eagle2 Staff Member TrainBoard Supporter

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    I'm guessing you mean this photo:

    [​IMG]
     
  7. Trains

    Trains TrainBoard Member

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    That's the one need to know what the small cylinder on the top of the other two is for?
     
  8. Mr. Trainiac

    Mr. Trainiac TrainBoard Member

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    That is the other side of the cylinder I circled in the other picture. You can see the firebox in the background, and with only one set of drivers in between it and the cylinder, that is the rear set of pistons. That top cylinder is probably for the steam pipe, and the one next to the piston valve is probably the exhaust, since it looks bigger. I might have them mixed up, but generally the input is at a higher pressure than the output.
     
  9. Doug Gosha

    Doug Gosha TrainBoard Member

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    Regardless, the Big boys are incredible machines for all time.

    Doug
     
  10. BoxcabE50

    BoxcabE50 Staff Member TrainBoard Supporter

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    Couild this top cylinder have been intended for use as part of the power reverse?
     
  11. Mr. Trainiac

    Mr. Trainiac TrainBoard Member

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    It might have a part to play in it, but to make steam locomotives even more complicated, another cylinder was added on top of the ones we are already discussing. I found this picture on the internet that shows the reversing piston linked to the L shaped rocker above the stub ended pipe on the piston valve. That means our unknown cylinder is not the power reverse. 6D5DE669-D5F2-4ACD-950E-B4359EAAF7A0.jpeg
     
    Last edited: Apr 9, 2018
  12. BoxcabE50

    BoxcabE50 Staff Member TrainBoard Supporter

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    OK. Then it is just a steam exhaust.
     
  13. fitz

    fitz Staff Member

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    At first I thought it was a "drifting valve" that the ATSF used on their steamers, but I don't think UP ever used them.
     
    Hardcoaler likes this.
  14. Doug Gosha

    Doug Gosha TrainBoard Member

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    Yeah, I don't think it's really a cylinder, it's just a housing connecting to the swiveling steam exhaust pipe to the smokebox. Right?

    Doug
     
  15. Mr. Trainiac

    Mr. Trainiac TrainBoard Member

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    I don’t think it would swivel, or at least it shouldn’t under normal conditions. The rear set of drivers is rigidly attached to the boiler. Only the pipes to the front engine would need to move. The thing I still don’t understand is why the steam pipe doesn’t just have a 90 degree bend at the end. Maybe the pressure would burst such a tight corner.
     
  16. Doug Gosha

    Doug Gosha TrainBoard Member

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    Oops, yeah, that wouldn't have to swivel, only the connections to the front engine. But it obviously is connected to the steam pipe. Yeah, the bolted-on head at the rear is a poser but I'm sure there's a reason. :D

    Doug
     
  17. BNSF FAN

    BNSF FAN TrainBoard Supporter

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    Anyone hear anything new on the progress on the 4014? UP still has it listed as heading to the 150th Golden Spike celebration late in April along with the 844.
     
  18. BoxcabE50

    BoxcabE50 Staff Member TrainBoard Supporter

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    It would be nice to read an update. Surely some news on how close they are now to operation....
     
  19. bremner

    bremner Staff Member

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  20. BoxcabE50

    BoxcabE50 Staff Member TrainBoard Supporter

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    Yes. I had seen that. But since then, all quiet.
     

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