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UP 4014

Dieses Thema im Forum 'International Heritage Railways/Tramways' wurde von athelney gestartet, 23 Juli 2013.

  1. 5944

    5944 Resident of Nat Pres

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    Train Maintainer for GTR at Hornsey
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    Letchworth
    Heritage Railway Volunteer:
    No I do not currently volunteer
    4019 did for a few months after the end of WW2.
     
    Bikermike gefällt dies.
  2. Gladiator 5076

    Gladiator 5076 Resident of Nat Pres

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    Heritage Railway Volunteer:
    No I do not currently volunteer
    If the U is out of gauge I am sure this will fit just fine.;)
     
  3. guycarr360

    guycarr360 Part of the furniture

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    Chester le Street County Durham
    Ed Dickens
    29 September at 03:09 ·
    Question: What is the purpose of the Elephant Ears, Wind or Smoke Wings/Lifters?
    My detailed answer:
    UP designed wind or smoke wings, elephant ears etc were not designed to “lift smoke” per se. The concept is quite simple, they create a visual path between the plate and the smoke box that is clear(er) as the locomotive is drifting often times with unfavorable crosswinds on the vast openess of Wyoming and Nebraska. I have experienced this numerous times over the years particularly in cooler weather while drifting downgrade when the lower exhaust pressures in a drifting condition are inadequate to carry the smoke and steam vapor upward - it therefore will continuously wrap around and downward swirling around quite effectively obscuring the view of the engine crew.
    As many people have likely observed over the past several years of operating the 4014, the smoke is carried high with sufficient exhaust pressure to carry the smoke upward - another handy use for that MU’d (Multiple Unit electrically connected and controlled from the cab of the 4014) dynamic brake as I’ve mentioned over the years, hold the train back and permit higher drifting throttle operation to give the fireman more exhaust to work with for both Elesco TP503 exhaust steam injector and on the UP 844 the wonderful Worthington SA - 5. Both of these feedwater devices utilize exhaust steam and the higher exhaust pressures result in improved operation while drifting.
    As with everything that was designed and installed on the major classes of UP Steam, they were based on trial and testing, and they were there because they served an important function.
    Additionally, these devices were typically applied to locomotives assigned to passenger service, while the Big Boys did pull such trains on several occasions over the years, they were simply too much power and too big (just like today, only use what we need to pull tonnage) for such service and were considered to be wasteful and therfore utilized where they could earn their keep pulling full freight tonnage.
    So - enjoy this temporary addition while you can.
    Thanks for reading.
    Ed
     
    35B gefällt dies.

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