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BR Standard class 6 No. 72010 'Hengist' and Clan Discussion Thread

Discussion in 'Steam Traction' started by Bulleid Pacific, Nov 23, 2009.

  1. ianh1

    ianh1 New Member

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    Yes, they are very good, aren't they? I had a very good e-conversation with the owner of the web site who was very interested in our project and happy to alow us a link on our web site. Although we have a lot of drawings, there's nothing like the real McCoy. The revised drawings does show the stub of the vents so maybe that has what has happened to Britannia. I've got access to 71000 cannon box photos but I can't see the vent pipes anywhere.

    Our design team have been working on the cannon box CAD models (see the appeals page) and have come up with an elegant seal system for the ends of the axles. The class 5 cannon box drawing used a leather seal. The class 6 drawing shows a revised arrangement but doesn't seem to include a seal - other than a labyrinth metal seal. We intend to have a meeting with Timken before we proceed to manufacture.
     
  2. std tank

    std tank Part of the furniture

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    With grease lubrication, I'd have thought that relief valves would have been fitted.
     
  3. ianh1

    ianh1 New Member

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    Yes agreed. Our revised design has an indicator to show when sufficient grease has been applied. Whenever you do car bearings, you're told to leave some air space
     
  4. Sheff

    Sheff Resident of Nat Pres

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    Air space = space for moisture. Be careful.
     
  5. class8mikado

    class8mikado Part of the furniture

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    2 Page full of grease and not a nipple in sight.... :Sour:
     
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  6. ianh1

    ianh1 New Member

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    Sheff - would you advocate filling the cannon boxes full of grease and having some form of relief valve to show when you've pumped enough grease in?
     
  7. Sheff

    Sheff Resident of Nat Pres

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    I would talk to the people who really know at Darlington. I can only give you my observations from the occasional cleaning turn and information give by the Trust to their supporters.
     
  8. 5944

    5944 Part of the furniture

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    [​IMG]
     
  9. class8mikado

    class8mikado Part of the furniture

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    :Hungry:
     
  10. ghost

    ghost Well-Known Member

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    ooh-matron.jpg
     
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  11. class8mikado

    class8mikado Part of the furniture

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  12. Sheff

    Sheff Resident of Nat Pres

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  13. The Green Howards

    The Green Howards Resident of Nat Pres Friend

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  14. Richard Roper

    Richard Roper Member

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    Did anyone t
    They've gone for the 9F option then... Even to the extent of 10x 6'2" drivers by the looks of it! Beast!

    Richard.
     
  15. marshall5

    marshall5 Well-Known Member

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    What size of injectors are you going to need to feed that big bu**er?
    Ray.
     
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  16. class8mikado

    class8mikado Part of the furniture

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    Thats only the top boiler, its going to be 'Clan McCrosti'
     
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  17. Ploughman

    Ploughman Part of the furniture

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    Didn't you know.
    They are building 2 boilers, but out of one big barrel then cut it in half.
     
  18. 5944

    5944 Part of the furniture

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    That's a pity, I was hoping that would just be the preheater!
     
  19. Sheff

    Sheff Resident of Nat Pres

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    Have you read the latest Steam Railway? Both 70000 and 71000 require new roller bearings due to water ingress.
     
  20. ianh1

    ianh1 New Member

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    I haven't yet but thanks for the tip. We had started with the Class 5 cannon box drawing - that has a leather seal at the ends with an adjustment ring and washer. There should be a modern alternative to this. The Class 6 drawings show the adjustment ring replaced by an enclosure ring. Our design team are looking at using modern seals at the outer ends.
     

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