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Flying Scotsman

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

  1. Martin Perry

    Martin Perry Nat Pres stalwart Staff Member Moderator Friend

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    Looking at photos in the various magazines, one thing struck me as odd; in all the photos of the cracked frame stretchers, the crack testing seems to have been done without first removing the paint ... very strange.
     
  2. RalphW

    RalphW Nat Pres stalwart Staff Member Administrator Friend

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    Would it need paint removal for X-Ray testing?
     
  3. Martin Perry

    Martin Perry Nat Pres stalwart Staff Member Moderator Friend

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    No ... but it would not need white contrast paint either (evident in the photos), which is generally used with Magnetic Particle Inspection (MPI) or Dye Penetrant. X-ray inspection is a complex and expensive process to use when other methods are available.
     
  4. RalphW

    RalphW Nat Pres stalwart Staff Member Administrator Friend

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    Thanks for that Martin, was not sure how many different ways of testing there are.
     
  5. Sir Nigel Gresley

    Sir Nigel Gresley Member

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    I remember seeing 60516 'Hycilla' piloting 60006 'Sir Ralph Wedgwood' from the north into the then Platform 16 at York, in the summer of 1960(?). There is a published photo of this train in the vicinity of Thirsk, which IIRC appeared in the Ian Allan 'Locospotters' Annual' (or similar) of that era.

    There were also not infrequent occasions of double-headed A1s between York and Doncaster, in the late '50s/early '60s: The 08:45 Hull - K+, and the 09:15 York - K+ normally combined at Doncaster, and went up to London with the A1 which was on the latter. (The former worked Hull - Doncaster with a Dairycoates D49 or K3.) When both trains were heavily-loaded, they ran separately, and York provided an additional A1 for the ex-Hull train. To get this loco to Doncaster, it double-headed the A1 on the 09:15 from York.
     
  6. polmadie

    polmadie Well-Known Member

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    [video]http://www.youtube.com/user/davaarx#p/u/6/3RVAV6MwUac[/video]
    Probably the nearest we will see of double headed LNER Pacifics.
     
  7. Dan Hill

    Dan Hill Part of the furniture

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    Didn't 60007 and 60532 double head over the S&C together back in the late 90's. More recently (though not on the mainline) 60163 and 4492 double headed on the MHR.
     
  8. Anthony Coulls

    Anthony Coulls Well-Known Member

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    They did, May 1998 I think, I was on it. Southbound over the S&C, great fun. Wish I had a sound recording of the climb from Appleby.
     
  9. No.7

    No.7 Well-Known Member

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    During the Sir Nigel Gresley Locomotive Preservation Trust AGM in September we had an afternoon with Dick Hardy and Peter Townend. The topic of double heading on the ECML came up. Peter told us that when he wrote his book on Top Shed he asked the civil engineering department why double headed ‘pacifics’ were banned on the route, expecting some concern about Welwyn viaduct or some other structure. After some study the answer came back that they couldn’t find any reason at all. The theory is that when the Gresely ‘pacifics’ were first introduced somebody thought they had better do something because they were so heavy and so the order was made - no double heading of pacifics. This stayed in place for the entire life of the LNER 'pacifics' on the ECML.

    Peter made the comment that this curiosity saved the LNER and BR thousands and thousands of pounds, “you only had to look over the wall at St. Pancras to see the amount of money the LM wasted on double heading”.
     
  10. conireland

    conireland Member

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    And presumably because Pacifics are strong enough to haul most trains single handedly without too much of a struggle? Although that wouldn't account for why the double heading was banned...
     
  11. fish7373

    fish7373 Member

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    HI martin and ralphw , all surface need to be cleaned in all processes of Magnetic Particle Inspection (MPI) or Dye Penetrant and X-ray testing for cracks, you can use mag and etch and ultrasound as well, the cheapest one is dye pen, most commen one to use mpi all you need is magnet white spray and magnetic particle spray, we use this on the underground at our depot to test trucks for cracks when a unit goes through HO. FISH7373 SOUTHALL 81C FITTER
     
  12. Foxhunter

    Foxhunter Member

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    There was a long held suspicion that the roller-bearing fitted A1's were overweight. I believe that weight savings with a welded boiler brought 60163 back under, certainly she's been weighed for the mainline OK. Did the Civil Engineer turn a blind eye or did no-one tell him? :whistle:

    Foxy
     
  13. std tank

    std tank Part of the furniture

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    Engine & Tender 166ton 2cwt compared to 164ton 9cwt for the normal A1s.
     
  14. Foxhunter

    Foxhunter Member

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    .....

    Those are the all up weights but what about the individual axle loadings? The *unsprung* weight was much more on the bogie wheels and driven axles because of the canon boxes, however 60163 passed its track force tests at the GCR with flying colours, better than 70013 apparently (but then a 3 cylinder engine should!).

    Foxy
     
  15. std tank

    std tank Part of the furniture

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    No diagram was ever issued for the roller bearing A1s, but the information I have in front of me says the axle loading on the driving axles was 22 ton 7cwt each compared with 22ton 0cwt on the normal A1s. Incidentially, is there a diagram for Tornado?
     
  16. Foxhunter

    Foxhunter Member

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    Good question. I've never seen a weight diagram of 60163 published but someone (Delta Rail?) must have the data. 7cwt for a canon box and the bearings... I wonder!

    Foxy
     
  17. campainr

    campainr Well-Known Member

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    Any more updates from Bury?
     
  18. irwellsteam

    irwellsteam Member

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    When and as they occur.
     
  19. std tank

    std tank Part of the furniture

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    NRM have scheduled a "press day" for 7th December at Bury.
     
  20. martin butler

    martin butler Part of the furniture

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    Probally to announce that Mr Osbourne has sold the NRM to Virgin for £1

    Now on a serious note, lets hope its good news and that 4472/502/102 will be centre spread back in one piece and in steam
     

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