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US Boiler Design and Combustion Chambers

Rasprava u 'Steam Traction' pokrenuta od Jimc, 20. Prosinac 2023..

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  1. Hermod

    Hermod Well-Known Member

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    Best british locomotive buch I have.
    You are in for a nice expirience
     
    Hermod, 21. Prosinac 2023.
    #21
    LMS2968 se sviđa ovo.
  2. bluetrain

    bluetrain Well-Known Member

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    A further thought here, if I may. Some of the Continental European Pacific designs had sloping throatplates at the front of the firebox. This had the effect of moving the rear tubeplate forward a couple of feet and putting that distance between the burning coals and tube ends, even in the absence of a discrete combustion chamber.

    Attached are a diagram and photo of a Czechoslovakian Class 387 Pacific, a 3-cylinder design of 1926. Its boiler layout and dimensions are very close to those of the well-known Bavarian S3/6 type. In both cases, there is no combustion chamber but there is a sloping throatplate, the front tubeplate is set well back and the tube length is only 5250mm (17ft 3in).

    So if Churchward had seen the Great Bear's tube length as a problem, he would have had a number of options to address it.
     

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    bluetrain, 21. Prosinac 2023.
    #22
    5944 se sviđa ovo.
  3. RLinkinS

    RLinkinS Member

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    I think the UK first locos to have a sloping throatplate were the GNR large atlantics

    Sent from my SM-A105FN using Tapatalk
     
    RLinkinS, 21. Prosinac 2023.
    #23
    Steve se sviđa ovo.
  4. osprey

    osprey Resident of Nat Pres

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    If you get into Graces Guide and search John Fowler there is mention of combustion chambers
     
    Last edited: 22. Prosinac 2023.
    osprey, 22. Prosinac 2023.
    #24
  5. LMS2968

    LMS2968 Part of the furniture

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    I'm now a long way into reading it. Have to agree with you on this one!
     
    LMS2968, 25. Prosinac 2023.
    #25
  6. Hermod

    Hermod Well-Known Member

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    Can we make a Peter Davis fan club and ask him to publish coresponding Webb four-cylinder compound book?
     
    Hermod, 25. Prosinac 2023.
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  7. S.A.C. Martin

    S.A.C. Martin Part of the furniture

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    Do you have the title to hand? I would be interested in obtaining a copy off the net tomorrow if the budget allows, post pay day...!
     
    S.A.C. Martin, 4. Siječanj 2024.
    #27
  8. LMS2968

    LMS2968 Part of the furniture

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    Certainly Simon:
    F. W. Webb's Three-Cylinder Compounds by Peter Davis (2020) published by The London & North Western Railway Society, ISBN 978-0-9570158-5-2

    I reviewed this for the 8F Society and found that it is in very short supply. The rrp appears to be £30 but those advertising it as available have a price of £50 and over.
     
    LMS2968, 4. Siječanj 2024.
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    S.A.C. Martin se sviđa ovo.
  9. S.A.C. Martin

    S.A.C. Martin Part of the furniture

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    Much appreciated, thank you.
     
    S.A.C. Martin, 4. Siječanj 2024.
    #29
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