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Flying Scotsman

الموضوع في 'Steam Traction' بواسطة 73129, بتاريخ ‏24 أوت 2010.

  1. keith6233

    keith6233 Member

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    Yes i noticed that but did not want to mention it for the same reason.
     
  2. Johnb

    Johnb Nat Pres stalwart

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    The "Gresley knock" was was well known in the old days and quite distinctive for those of us who were privileged to stand on Harringay Station watching a GN express getting into its stride. I'm sure it's nothing to worry about.
     
  3. paullad1984

    paullad1984 Member

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    Must say she sounds as good as ever, and the sight of her easily taking that load on the test run boads well for the ecml!
     
  4. andalfi1

    andalfi1 Well-Known Member

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    Lets face it, she was a bag of spanners for years, at last she has been well and truly bottomed, she's never sounded as good since her last shopping at the Plant.
    Well done to the Lancastrian boys, you done good...
     
    green five, fish7373, 26D_M و 1 شخص آخر معجبون بهذا.
  5. greenslade

    greenslade Member

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    the settle Carlisle line is blocked,bbc news,since this is the route to be taken tomorrow does anyone know if it will go both north and south over shap?
     
  6. Sidmouth

    Sidmouth Resident of Nat Pres Staff Member Moderator

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    I don't hear a knock at least in a mechanical sense, one beat seems sharper or louder than the others which gives the illusion of the knock
     
    steamvideosnet و S.A.C. Martin معجبون بهذا.
  7. twr12

    twr12 Well-Known Member

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    Three cylinder locos should sound off beat, due to the different lengths of the exhaust pipes from valves to blastpipe.
     
  8. class8mikado

    class8mikado Part of the furniture

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    Are you for real ?
     
    andalfi1, LMS2968 و fish7373 معجبون بهذا.
  9. twr12

    twr12 Well-Known Member

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    Yes. And I post things on here to annoy people like you.

    (Will that do Ed?)
     
    أعجب بهذه المشاركة Nigel Day
  10. ragl

    ragl Well-Known Member

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    Nah, being a proper train spotter, you should know that it's 'cos the front driving wheels are a different diameter to the middle ones. Jeez, some people.....
     
    LMS2968 و BDY26 معجبون بهذا.
  11. 242A1

    242A1 Well-Known Member

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    So a given volume of steam takes exactly the same time to exit from the exhaust ports and then exit from the blastpipe tip regardless of any variation in the exhaust tract. Anyone believe this? And further it will do so with identical pressure drop.
     
  12. twr12

    twr12 Well-Known Member

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    As you say, a given volume of steam will take longer to travel through a longer pipe.
    But laws of physics don't apply in a silly argument
     
  13. Linesider

    Linesider Well-Known Member

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    Posted also on the LE thread, but for those concentrating just on this one, here is another video from the big day:

     
    VirtualSteam, GHWood, S.A.C. Martin و 3 آخرون معجبون بهذا.
  14. ragl

    ragl Well-Known Member

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    Superb David, looks like a really good day out despite the gloom.. The sound capture is excellent - especially the slip!! Many thanks for sharing.

    Cheers,

    Alan
     
  15. Linesider

    Linesider Well-Known Member

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    Many thanks Alan, shame it wasn't on Wednesday given the weather, but perhaps that would have been asking for a little too much! Very pleasing to see her back on the big railway.
     
  16. class8mikado

    class8mikado Part of the furniture

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    But I'm not annoyed... bemused perhaps, more posts like this please.. sooner or later one will actually be funny.
     
  17. 242A1

    242A1 Well-Known Member

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    I would not go as far as "silly argument" but it is remarkable how views stick in spite of good reason for them not to.
     
  18. JJG Koopmans

    JJG Koopmans Member

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    Let's take exhaust steam at 100 m/sec and a pipe 1 m longer, the difference would be 1/100 sec. Is your hearing that good?
    Kind regards
    Jos Koopmans
     
  19. Doningtonphil

    Doningtonphil New Member

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    Still showing as routed south from Carlisle on the S&C tomorrow, will it be open? IF not, when will a new path have to be booked by?

    Busy day tomorrow, is it not due in York by the end of the day?
     
  20. threelinkdave

    threelinkdave Well-Known Member

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    Re the whistle. Sounded a typical LNER high pitched (french) screamer. Chime whistles came with later locos
     

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