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P2 Locomotive Company and related matters

Rasprava u 'Steam Traction' pokrenuta od class8mikado, 13. Rujan 2013..

Stranica 92 od 194
  1. Richard Roper

    Richard Roper Well-Known Member

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    Looking at the P2 website, their level of investigative research is extremely thorough, and with the extremely good fortune of being able to be introduced to George Carpenter, has led to an invaluable line of contact with people involved with the development and implementation of Franklin B valvegear at ALCO in the USA.

    Reading of George Carpenter's connections in themselves is fascinating stuff, I'd love to be able to read his memoirs of working with Stanier, Bulleid, Chapelon & Porta. All through the kindness of a P2 supporter. Fantastic stuff!

    When you read about the USA connections with Vernon & Charles Smith, their retention of archive material, and also the fact that both drawings and manuals survive and have been borrowed, the story becomes even more absorbing.

    I hope that a comprehensive book can be produced on the construction of No. 2007 (To compliment Andrew Hardy's excellent book), covering the areas of research, discoveries etc., which have emerged since Andrew's book was written.

    Oh, and I'd absolutely LOVE to see the 10.25" Gauge (I presume, says 10" on the P2 site) P2 model built by one of the supporters. That in itself will be damned impressive!

    Richard.
     
    Last edited: 10. Svibanj 2018.
    Richard Roper, 10. Svibanj 2018.
    #1821
    S.A.C. Martin, BrightonBaltic i 240P15 se sviđa ovo.
  2. 240P15

    240P15 Well-Known Member

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    240P15, 17. Svibanj 2018.
    #1822
    aron33, 30854, Richard Roper i 5 ostalih se sviđa ovo.
  3. Foxhunter

    Foxhunter Member

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    Is this what you are referring to Knut?

    [​IMG]

    Foxy.
     
    Foxhunter, 20. Svibanj 2018.
    #1823
    aron33, Kinghambranch, S.A.C. Martin i 1 drugoj osobi se sviđa ovo.
  4. 240P15

    240P15 Well-Known Member

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    Yes, it is:) Great engineering.
     
    240P15, 20. Svibanj 2018.
    #1824
  5. S.A.C. Martin

    S.A.C. Martin Part of the furniture

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    Mikado before the end of the year? Terrific update.
     
    S.A.C. Martin, 21. Svibanj 2018.
    #1825
    aron33 and Kinghambranch like this.
  6. The Green Howards

    The Green Howards Nat Pres stalwart

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    Deleted.
     
    The Green Howards, 21. Svibanj 2018.
    #1826
  7. 240P15

    240P15 Well-Known Member

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    240P15, 1. Lipanj 2018.
    #1827
    clinker, jnc, Bluenosejohn i 3 ostalih se sviđa ovo.
  8. Richard Roper

    Richard Roper Well-Known Member

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    Richard Roper, 4. Lipanj 2018.
    #1828
    Bluenosejohn and 240P15 like this.
  9. philw2

    philw2 Member

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    Why are they quartering the wheels of a three-cylinder loco please?

    Sent from my Nexus 7 using Tapatalk
     
    Last edited: 4. Lipanj 2018.
    philw2, 4. Lipanj 2018.
    #1829
  10. philw2

    philw2 Member

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    Sent from my Nexus 7 using Tapatalk
     
    philw2, 4. Lipanj 2018.
    #1830
  11. Jamessquared

    Jamessquared Nat Pres stalwart

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    Surely “quartering” in this context just refers to the generic process of ensuring that the crank pins have the correct relative alignment; not a specific statement that they are at 90 degrees to each other.

    Tom
     
    Jamessquared, 4. Lipanj 2018.
    #1831
    MarkinDurham, paullad1984 i BrightonBaltic se sviđa ovo.
  12. BrightonBaltic

    BrightonBaltic Member

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    I'd presume it's technically 'thirding', but I doubt such a word exists in the steam engineer's lexicon...
     
    BrightonBaltic, 4. Lipanj 2018.
    #1832
    LesterBrown se sviđa ovo.
  13. class8mikado

    class8mikado Part of the furniture

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    'Blessed are the cheesemakers....'
     
    class8mikado, 4. Lipanj 2018.
    #1833
    andrewshimmin and sir gilbert claughton like this.
  14. W.Williams

    W.Williams Well-Known Member

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    My understanding is they are still at 90degrees to each other?
     
    W.Williams, 5. Lipanj 2018.
    #1834
  15. LMS2968

    LMS2968 Part of the furniture

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    No, 120 degrees. 90 degrees is for two- and four-cylinder engines only.
     
    LMS2968, 5. Lipanj 2018.
    #1835
    BrightonBaltic se sviđa ovo.
  16. W.Williams

    W.Williams Well-Known Member

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    Yes, that makes sense.
     
    W.Williams, 5. Lipanj 2018.
    #1836
    BrightonBaltic se sviđa ovo.
  17. 242A1

    242A1 Well-Known Member

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    Well, yes and again no. It all depends. If we are only considering simple expansion types, which we usually are since by far the bulk of our attention is devoted to UK practice, then the answer is yes (though for four cylinder simples you also have the 135 degree alternative setting).

    Three cylinder compounds are another area, they can have 120 degree settings or 135 - 90 -135.

    There are other arguments concerning optimal settings, but there is little point in entering these areas since we are never going to come across their application.
     
    242A1, 5. Lipanj 2018.
    #1837
  18. 30854

    30854 Resident of Nat Pres

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    ...... and then there was Mr Paget's creation on the Midland ..... ;)
     
    30854, 5. Lipanj 2018.
    #1838
  19. LMS2968

    LMS2968 Part of the furniture

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    We can always find exceptions and quote the wonderful and simply bazaar, but 99% of engines will conform to what I said.
     
    LMS2968, 5. Lipanj 2018.
    #1839
    jnc and 240P15 like this.
  20. BrightonBaltic

    BrightonBaltic Member

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    Weren't the crank angles on Bulleids and some Lord Nelsons a bit weird too?
     
    BrightonBaltic, 5. Lipanj 2018.
    #1840
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