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  1. LMS2968
    Post

    Driving a compound locomotive

    I could be wrong on this, but i think the receiver on Francis Webb's three cylinder compounds was inside the smokebox, and a desire to gain some...
    Post by: LMS2968, Nov 19, 2021 in forum: Steam Traction
  3. LMS2968
    Post

    GCR 8K/LNER 04 63601

    The photos are of 2968's firebox under repair on the Severn Valley, 26 July 2020.
    Post by: LMS2968, Nov 17, 2021 in forum: Steam Traction
  4. LMS2968
    Post

    Driving a compound locomotive

    What the bypass system did was supply boiler steam to both sides of the HP piston(s), so putting the HP cylinder(s) into equilibrium and...
    Post by: LMS2968, Nov 17, 2021 in forum: Steam Traction
  5. LMS2968
    Post

    GCR 8K/LNER 04 63601

    Yep - agree!
    Post by: LMS2968, Nov 17, 2021 in forum: Steam Traction
  6. LMS2968
    Post

    GCR 8K/LNER 04 63601

    I'm not a boiler smith so don't know, but shear head bolts are used in the motor industry as you say. But those heads look a little too...
    Post by: LMS2968, Nov 17, 2021 in forum: Steam Traction
  7. LMS2968
    Post

    GCR 8K/LNER 04 63601

    Patch screws. These are inserted from the fire side into threaded holes, then the square end cut off and the head peened over. [IMG] [img]
    Post by: LMS2968, Nov 16, 2021 in forum: Steam Traction
  8. LMS2968
    Post

    Maunsell W Tanks

    The 4Fs were a much maligned class, and the criticism is only partly justified. The main criticism is the axleboxes which, according to rumour,...
    Post by: LMS2968, Nov 10, 2021 in forum: Steam Traction
  9. LMS2968
    Post

    Maunsell W Tanks

    I doubt many LMS men would agree with you on that one, Simon! Few of the ones I worked with would take a Standard Five over a Black Five, unless...
    Post by: LMS2968, Nov 10, 2021 in forum: Steam Traction
  10. LMS2968
    Post

    GWR 111 "The Great Bear" and Surrounding Controversies

    It was mostly about the spacing of the inside and outside cylinders, the former over the leading bogie axle and the outers over the rear one, same...
    Post by: LMS2968, Oct 31, 2021 in forum: Steam Traction
  11. LMS2968
    Post

    GWR 111 "The Great Bear" and Surrounding Controversies

    Yes, that's just one of the advantages of a wide firebox, but there are others. You have a larger grate area which can better deal with lower...
    Post by: LMS2968, Oct 30, 2021 in forum: Steam Traction
  12. LMS2968
    Post

    GWR 111 "The Great Bear" and Surrounding Controversies

    The original Class 1 boilers 6200/01 were 20' 9" between tubeplates; the later ones with an elongated combustion camber were 18" shorter. The...
    Post by: LMS2968, Oct 29, 2021 in forum: Steam Traction
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