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Rasprava u 'Steam Traction' pokrenuta od KentYeti, 24. Kolovoz 2010..

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  1. twr12

    twr12 Well-Known Member

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    Tangmere hasn't left Carnforth yet, because it isn't ready
     
    twr12, 3. Ožujak 2011.
    #381
  2. j alsop

    j alsop New Member

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    Any further news re Tangmere please, kind regards john
     
    j alsop, 6. Ožujak 2011.
    #382
  3. JohnRobinson

    JohnRobinson Member

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    Just recd an e-mail via preston railgen

    "While at carnforth tonight have noticed that Tangmere is in light warm
    up type steam and facing s/b - it was turned a couple of weeks ago
    after the test runs and topped up with coal on Friday."

    Anyone add to this?

    John
     
    JohnRobinson, 6. Ožujak 2011.
    #383
  4. Bulleid Pacific

    Bulleid Pacific Part of the furniture

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    According to the latest Beano, there were issues with the air pump and the valve settings that emerged during the test run, but apart form those, she 'ran sweetly'.
     
    Bulleid Pacific, 6. Ožujak 2011.
    #384
  5. j alsop

    j alsop New Member

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    No move showing as of 08.30 today.............so presume it's being tested, rgds john
     
    j alsop, 7. Ožujak 2011.
    #385
  6. RalphW

    RalphW Nat Pres stalwart Staff Member Administrator Friend

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    Still a problem with the air pump I believe.
     
    RalphW, 7. Ožujak 2011.
    #386
  7. buseng

    buseng Part of the furniture

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    None of this with good old fashioned vacuum brakes. One, sometimes 2, simple ejectors + a pump on ex GW locos & thats it.
     
    buseng, 7. Ožujak 2011.
    #387
  8. noelist

    noelist Member

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    a fellow enthusiast asked me why rail enthusiasts call compressors air pumps, well as a lorry/wagon driver, one knows that an air pump aint no good for air brakes, pedantic view here, on top of the back of Tangmere's tender are 4 or 5 air reservoirs, kept at a high number of PSI's, pressurised with the compressor, the way air brakes work is that the air pressure holds the brakes off, when the brake is applied air is released in a controlled way allowing the brakes to come on. this was not always the case, for safety, if you run out of air the brakes come on. pedantic rant over.
     
    noelist, 7. Ožujak 2011.
    #388
  9. Steve

    Steve Resident of Nat Pres Friend

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    The use of the word 'Pump' is more usually associated with reciprocating compressors but both are 'pumping' a fluid.
    Air brakes on trains are also fail-safe so, if you lose your air pressure, the brakes come on.
     
    Steve, 7. Ožujak 2011.
    #389
  10. Mighty Mogul

    Mighty Mogul Well-Known Member

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    Without specifically citing the current suggested probems with 34067, why is it that so many of the failures/problems relating to main line steam appear to be connected to the air pump / air braking system? Is there a fundamental reason why, locomotives originally designed with vac brakes seem to struggle, and yet European and American locomotives seem to fare much better given their historical precedent for air braking?
     
    Mighty Mogul, 7. Ožujak 2011.
    #390
  11. Steve

    Steve Resident of Nat Pres Friend

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    I'd probably put it down to experience and familiarity. We've years of experience with vac brakes and know what to do when things go wrong. Air pump experience is much more limited.
     
    Steve, 8. Ožujak 2011.
    #391
  12. Neil_Scott

    Neil_Scott Part of the furniture

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    When were mainline steam engines first fitted with air pumps (post-preservation)?
     
    Neil_Scott, 8. Ožujak 2011.
    #392
  13. Martin Perry

    Martin Perry Nat Pres stalwart Staff Member Moderator Friend

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    First one on the mainline was Clan Line in the early 90s. I think that the Nene Valley may well have fitted air brakes to Britannia and 73050 before that? Either way it is hardly new technology.
     
    Martin Perry, 8. Ožujak 2011.
    #393
  14. odc

    odc Member

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    Also numourius small Ex Southern and a few Great Eastern locos have had them since the Victorian era, not to mention all the Narrow gauge outfits.
     
    odc, 8. Ožujak 2011.
    #394
  15. guard_jamie

    guard_jamie Part of the furniture

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    Not all. The VoR only went over to Air brakes post-89 and the Talyllyn in '91 I believe.
     
    guard_jamie, 8. Ožujak 2011.
    #395
  16. Neil_Scott

    Neil_Scott Part of the furniture

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    Off the top of my head I'm not sure I could name a narrow gauge line that used air. Welshpool, Corris, L&B and Festiniog were all vacuum I think (?).
     
    Neil_Scott, 8. Ožujak 2011.
    #396
  17. std tank

    std tank Part of the furniture

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    Standard 2-6-4 tank 80064 was fitted with air brakes when it was restored.
     
    std tank, 8. Ožujak 2011.
    #397
  18. odc

    odc Member

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    You take me too literally. The many air braked NG operations may not have been using it for all that long (excepting the North Wales Narrow Railway railway that became part of the WHR) but they have little trouble with it. The SR and GER loco's, were very definatly Victorian or early 1900's though
     
    odc, 9. Ožujak 2011.
    #398
  19. JohnRobinson

    JohnRobinson Member

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    just recd this

    Tangmere Friday 11/03/2011.

    5z47

    CARNFTHST 08:00
    CRNFTHLHS 08:10 08:12
    CARNFORTH 08:17 09:49
    CRNFTHNJN PASS 09:50
    CRNFTU+DG 09:52 09:56
    MORCM SJN PASS 10:03
    LANCASTER PASS 10:06
    PRESTON PASS 10:27
    EUXTON JN PASS 10:34
    BLSHAWLJN PASS 10:36
    WIGAN NW PASS 10:43
    WIGAN SJN PASS 10:44
    SPRINGSBJ PASS 10:45
    WINWICK J PASS 10:51
    WARRDALLJ PASS 10:54
    WARRTN BQ PASS 10:56
     
    JohnRobinson, 10. Ožujak 2011.
    #399
  20. belle1

    belle1 Part of the furniture Moderator

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    Thanks for that info John, I will go out to Winwick if it runs.

    Neil.
     
    belle1, 10. Ožujak 2011.
    #400
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