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71000 Matters

Discussion in 'Steam Traction' started by paralaxerror, Jan 12, 2013.

  1. GWR4707

    GWR4707 Nat Pres stalwart

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    I know she fits round the Cumbrian Coast, which is normally a pretty good sign of wide ranging route availability.....
     
  2. staffordian

    staffordian Well-Known Member

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    The problem these days seems to be that just because it used to fit, there is no guarantee that Network Rail will agree (or even know?) if it still fits...
     
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  3. Kylchap

    Kylchap Member

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    Does anybody have an idea about the timescale for 71000 to be operational again? I'm interested in how long it might be before the relaunched Tyseley set-up might have her available for outings.
     
  4. Stevo_m

    Stevo_m New Member

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    Early 2019
     
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  5. Luke McMahon

    Luke McMahon Member

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    Fantastic news, can't wait to have the Duke back in action as she's been dormant for way too long now.

    Out of curiosity which parts of 71000 have been re-engineered? The owners did say they were tweaking a few bits to make her more reliable & perform better. Also does she still have her american chime whistle fitted? Always sounded fab with that on.
     
  6. MellishR

    MellishR Resident of Nat Pres Friend

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    Without ploughing through several issues of the newsletter I'm not certain, but I think the only parts that are being tweaked are the exhaust cams, everything else being refurbished or replaced like-for-like. If you're keen to have the Duke back in action, join the Trust and add your support: https://www.theduke.uk.com/support/membership/
     
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  7. class8mikado

    class8mikado Part of the furniture

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    Luke, I believe that the cylinder lubrication is to be changed to give more direct/ less atomised feed. The piston and rods are being renewed, but by a more conventional method of manufacture ( cant remember the ins and outs but the originals were unusual) - this in response to short piston ring life/ cylinder liner wear common with the larger standards.
    Apart form the cams mentioned I don't recall much else.
     
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  8. std tank

    std tank Part of the furniture

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    New front cylinder covers are also being made. These are to accommodate the the nuts/lock nuts on the conventional piston/piston rod set mentioned by yourself.
     
  9. class8mikado

    class8mikado Part of the furniture

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    Rear cylinder covers with a slide bar 'anchoring point' are not being made... ( not yet anyway ).
     
  10. Luke McMahon

    Luke McMahon Member

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    Gorgeous loco & can't wait to see the duke back out n about again, i'll certainly be on a few of her tours. Was magic when she was based at bury for a few years, drew the enthusiasts in their droves, I could be completely wrong here but is 71000 bigger than usual for a pacific?

    She always seemed rather chunky even from platform level, loved her with that chime whistle she had on for a while, do hope she keeps it.
     
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  11. LMS2968

    LMS2968 Part of the furniture

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    71000 - 101T 5cwt
    Stanier Pacific 105T 5cwt
    Merchant Navy 97T 18cwt
    A4 102T 19cwt
    A1 104T 2cwt

    So not particularly big.
     
  12. Luke McMahon

    Luke McMahon Member

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    Just my perception when I first saw it then it looked bigger. Fab loco & was lucky to survive by the sounds of things.
     
  13. sir gilbert claughton

    sir gilbert claughton Well-Known Member

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    WE are lucky she survived - and that so much work has been done setting her to rights .
    I wonder what a Kylchap/Caprotti Duchess could do . ooooooooo another new build ??
     
  14. 30854

    30854 Resident of Nat Pres

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    With or without inverted tin bath?
     
  15. LMS2968

    LMS2968 Part of the furniture

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    Since with the existing exhaust, the boiler could produce more power than the wheels could transmit to the rails, probably not a lot.
     
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  16. class8mikado

    class8mikado Part of the furniture

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    Indeed, potential improvements in efficiency maybe..... The Duke looks chunky because the Boiler diameter is maxed out but the length is short / wheel base is compacted - so she is a tad shorter than other Class 8 Pacifics....
     
  17. JJG Koopmans

    JJG Koopmans Member

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    Well, the double chimney had 4 7/16 in orifices, the 6245 Kylchap fitted had two of 5 1/2 in diameter which is only 50% more in area! Tiny detail?
    Kind regards
    Jos
     
  18. LMS2968

    LMS2968 Part of the furniture

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    But did it perform any better?
     
  19. JJG Koopmans

    JJG Koopmans Member

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    I would expect it did. However Powell writes "Little is known of the performance of this application, but the Motive Power Department
    complained that the cowls above the blastpipes seriously interfered with tube cleaning, and it was not persevered with"
    Kind regards
    Jos
     
  20. LMS2968

    LMS2968 Part of the furniture

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    Fair enough. Thanks.
     

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