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UP 4014

Discussion in 'International Heritage Railways/Tramways' started by athelney, Jul 23, 2013.

  1. Dunfanaghy Road

    Dunfanaghy Road New Member

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    Thanks Tom.
    Definitely collar work, then.
    Pat
     
  2. guycarr360

    guycarr360 Member

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    It should be pointed out that the run took place with Roller Bearing equipped Rolling stock, and one of the big hurdles to overcome in operation was treating the rolling stock with sufficient respect until everything truly warmed up.

    Another example is here as UP844 helps rescue a stalled freight.



    When asked about "how much", they could hang off the drawbar of 4014, Ed Dickens looked over at a freight yard in Sacremento, and said, all of that!!!
     
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  3. Enterprise

    Enterprise Well-Known Member

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    Altitude has very little effect on the power output of a steam locomotive except in poorly designed boilers the mass of air available for combustion could be reduced enough to limit steam production and superheat temperature.
     
  4. mdewell

    mdewell Member

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    But on the other hand, reduced atmospheric pressure will mean a lower boiling point for water (93 degrees at 6,000 feet). Whether that would completely counter balance the above point I have no idea but in theory it should help.
     
  5. Jamessquared

    Jamessquared Nat Pres stalwart

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    No it won’t, because the boiler pressure controls the temperature of the water in the boiler.

    Tom
     
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  6. mdewell

    mdewell Member

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    Doh! :Facepalm:
     
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  7. guycarr360

    guycarr360 Member

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    The best clip to date...
     
    huochemi and David likes trains like this.
  8. The Saggin' Dragon

    The Saggin' Dragon Part of the furniture Staff Member Moderator

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    Only when its in a free volume, not when its contained ... like in a boiler.
     

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