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Streamlined Non-Pacifics

Discussion in 'Steam Traction' started by DismalChips, Jan 9, 2019.

  1. ragl

    ragl Member

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    Yes, it's a Pacific, but I would be absolutely delighted to find out that this still survives:

    RSH Pac 1.jpg

    IQbr670332.jpg

    Built by RSH in 1941, ran in Iraq until the 60's. What's more, I do believe that it would "fit" our railways.......


    Cheerz,

    Alan
     
  2. Jimc

    Jimc Well-Known Member

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    I've never seen any wind tunnel test results, so who knows...
     
  3. Hermod

    Hermod New Member

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    On a locomotive doing 200 km/h the upper part of drivers do 400 and here we are really talking resistance.
    This is not influenced very much by streamlining or not.
    It can only have been a marketing gag to put a scale model in a windtunnel and then giving air resistance savings with three significant numbers.
     
  4. Eightpot

    Eightpot Well-Known Member

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    Lubeck - Buchener Eisenbahn 2-4-2 T of the 1930s, later as Deutsche Reichsbahn BR 60.
     
  5. Monkey Magic

    Monkey Magic Well-Known Member

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    It is rather phallic looking.

    It looks a bit like Peter Perfect's Perfectmobile.

    Maybe it is compensating?
     
  6. LesterBrown

    LesterBrown Member

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    I recall reading that the renowned industrial designer Raymond Loewy, before he designed the streamlining of the S1 'Big Engine' had seen photos of the GWR efforts and commented that it 'had possibilities'
    [​IMG]
     
  7. Jimc

    Jimc Well-Known Member

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    I've had a 5 minute go at one of the images, giving it
    - valances which make the cylinders etc look a bit less of a bolt on
    - combining the splashers with the steam pipe/front end fairing
    - single fairing over chimney and safety valve as far as the cab.

    Does it look any better? be interesting to see what the high quality photo hackers could make of it.

    kingstreamlinemod.jpg

    Original image here: http://www.curbsideclassic.com/trac...-george-v-combining-innovation-and-tradition/
     
    Last edited: Jan 12, 2019
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  8. 60017

    60017 Part of the furniture Friend

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    Could be the 'love child' from a one night stand between an A4 and Princess Coronation!
     
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  9. Matt37401

    Matt37401 Part of the furniture

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    Still not convinced! :)
     
  10. Richard Roper

    Richard Roper Member

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    Well, if it is, they certainly produced a looker! I'm not generally "into" the overseas scene, but if this came back home I'd certainly pay to go and see it!

    Richard.
     
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  11. Spamcan81

    Spamcan81 Resident of Nat Pres

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    And then there was the DRG Class 05 4-6-4.
    DRG05.jpg
     
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  12. Steve

    Steve Part of the furniture Friend

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    That just seems to be an exercise in how to make every part that you might want to access on a daily basis, inaccessible.
     
  13. Jamessquared

    Jamessquared Nat Pres stalwart

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    OTOH, the increased time spent on shed is compensated because it can get from A to B quicker once hauling a train - so swings and roundabouts ... :)

    Tom
     
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  14. Steve

    Steve Part of the furniture Friend

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    Hmmm....
     
  15. pete2hogs

    pete2hogs Member

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    Which was done on the streamlined sets the A4's were designed to haul. . the beaver tail obs cars were expected to help as well.

    And they did regularly run at very high speed for the day. Calculations were made as to how much horsepower was saved - about 300hp IIRC
     
    Last edited: Jan 16, 2019
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  16. Smokestack Lightning

    Smokestack Lightning New Member

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    Anyone who thinks that air resistance can be ignored at lower speeds has obviously never ridden a bike into a head wind.

    Dave
     
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  17. Hermod

    Hermod New Member

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    Problem is that no one knows how much was saved by smothing.
    Small scale locomotive models in wind channels with stationary motion and no waggons in tow was not a safe bet.
     
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  18. Spamcan81

    Spamcan81 Resident of Nat Pres

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    So why did aero-engineers experiment with scale models in wind tunnels to test all manner of theories before building prototypes if no useful data could
    be achieved?
     
  19. Jamessquared

    Jamessquared Nat Pres stalwart

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    Who'd trust an aero engineer? Not one of them tried out an asymmetrical compound propulsion ...

    Tom
     
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  20. Hermod

    Hermod New Member

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    Aero engineers do experiments if payed.
    Railway marketing had the money .
     
    Last edited: Jan 16, 2019

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