If you register, you can do a lot more. And become an active part of our growing community. You'll have access to hidden forums, and enjoy the ability of replying and starting conversations.

US Boiler Design and Combustion Chambers

Discussion in 'Steam Traction' started by Jimc, Dec 20, 2023.

Page 2 of 2
  1. Hermod

    Hermod Well-Known Member

    Joined:
    May 6, 2017
    Messages:
    1,109
    Likes Received:
    317
    Gender:
    Male
    Location:
    Klitmoeller,Denmark
    Heritage Railway Volunteer:
    No I do not currently volunteer
    Best british locomotive buch I have.
    You are in for a nice expirience
     
    Hermod, Dec 21, 2023
    #21
    LMS2968 likes this.
  2. bluetrain

    bluetrain Well-Known Member

    Joined:
    Mar 3, 2019
    Messages:
    1,561
    Likes Received:
    1,584
    Gender:
    Male
    Location:
    Wiltshire
    Heritage Railway Volunteer:
    Yes I am an active volunteer
    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.
     

    Attached Files:

    bluetrain, Dec 21, 2023
    #22
    5944 likes this.
  3. RLinkinS

    RLinkinS Member

    Joined:
    Nov 8, 2008
    Messages:
    982
    Likes Received:
    972
    Gender:
    Male
    Heritage Railway Volunteer:
    Yes I am an active volunteer
    I think the UK first locos to have a sloping throatplate were the GNR large atlantics

    Sent from my SM-A105FN using Tapatalk
     
    RLinkinS, Dec 21, 2023
    #23
    Steve likes this.
  4. osprey

    osprey Resident of Nat Pres

    Joined:
    Oct 3, 2007
    Messages:
    10,493
    Likes Received:
    2,850
    Occupation:
    semi-retired, currently doing R&D for my patents
    Location:
    Halifax
    If you get into Graces Guide and search John Fowler there is mention of combustion chambers
     
    Last edited: Dec 22, 2023
    osprey, Dec 22, 2023
    #24
  5. LMS2968

    LMS2968 Part of the furniture

    Joined:
    Sep 1, 2006
    Messages:
    3,072
    Likes Received:
    5,361
    Gender:
    Male
    Occupation:
    Lecturer retired: Archivist of Stanier Mogul Fund
    Location:
    Wigan
    Heritage Railway Volunteer:
    Yes I am an active volunteer
    I'm now a long way into reading it. Have to agree with you on this one!
     
    LMS2968, Dec 25, 2023
    #25
  6. Hermod

    Hermod Well-Known Member

    Joined:
    May 6, 2017
    Messages:
    1,109
    Likes Received:
    317
    Gender:
    Male
    Location:
    Klitmoeller,Denmark
    Heritage Railway Volunteer:
    No I do not currently volunteer
    Can we make a Peter Davis fan club and ask him to publish coresponding Webb four-cylinder compound book?
     
    Hermod, Dec 25, 2023
    #26
    LMS2968 likes this.
  7. S.A.C. Martin

    S.A.C. Martin Part of the furniture

    Joined:
    Aug 31, 2010
    Messages:
    5,615
    Likes Received:
    9,418
    Gender:
    Male
    Occupation:
    Asset Engineer (Signalling), MNLPS Treasurer
    Location:
    London
    Heritage Railway Volunteer:
    Yes I am an active volunteer
    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, Jan 4, 2024
    #27
  8. LMS2968

    LMS2968 Part of the furniture

    Joined:
    Sep 1, 2006
    Messages:
    3,072
    Likes Received:
    5,361
    Gender:
    Male
    Occupation:
    Lecturer retired: Archivist of Stanier Mogul Fund
    Location:
    Wigan
    Heritage Railway Volunteer:
    Yes I am an active volunteer
    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, Jan 4, 2024
    #28
    S.A.C. Martin likes this.
  9. S.A.C. Martin

    S.A.C. Martin Part of the furniture

    Joined:
    Aug 31, 2010
    Messages:
    5,615
    Likes Received:
    9,418
    Gender:
    Male
    Occupation:
    Asset Engineer (Signalling), MNLPS Treasurer
    Location:
    London
    Heritage Railway Volunteer:
    Yes I am an active volunteer
    Much appreciated, thank you.
     
    S.A.C. Martin, Jan 4, 2024
    #29
Page 2 of 2

Share This Page