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  1. Allegheny
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    Disused Tracks in Surrey

    Thanks Chris, I'll look forward to hearing the results of your exploration. Unfortunately, I've got my teeth into this now. Here is the Google...
    المشاركة بواسطة: Allegheny, ‏10 جوان 2016 في منتدى: Narrow Gauge Railways
  3. Allegheny
    مشاركة

    Disused Tracks in Surrey

    Chris, The map dates from 1948, so it would show the track that was extant at the time. Ilvaporista, I wasn't sure from your post whether the...
    المشاركة بواسطة: Allegheny, ‏10 جوان 2016 في منتدى: Narrow Gauge Railways
  4. Allegheny
    مشاركة

    Disused Tracks in Surrey

    I followed the link from "Collection X" onto this thread. I'm just wondering if the J-shaped track to the west of Loxhill on the 1948 OS map...
    المشاركة بواسطة: Allegheny, ‏9 جوان 2016 في منتدى: Narrow Gauge Railways
  5. Allegheny
    مشاركة

    Locomotive Front End Designs

    I agree it's a fascinating subject. Please correct me if I am wrong, but the original exhaust on 71000 was a double chimney based on the Dean...
    المشاركة بواسطة: Allegheny, ‏6 جوان 2016 في منتدى: Steam Traction
  6. Allegheny
    مشاركة

    Edward Thompson: Wartime C.M.E. Discussion

    Depends on what you've been drinking.
    المشاركة بواسطة: Allegheny, ‏23 ماي 2016 في منتدى: Steam Traction
  7. Allegheny
    مشاركة

    Replica builds for heritage lines.

    For now, I think it would be better if LNWR aficionados lent their support to the George V project, rather than dividing resources between a...
    المشاركة بواسطة: Allegheny, ‏23 ماي 2016 في منتدى: Steam Traction
  8. Allegheny
    مشاركة

    Replica builds for heritage lines.

    There is obviously a spectrum here. If the only criterion was logic and common sense, would we be discussing steam locomotives?
    المشاركة بواسطة: Allegheny, ‏29 إبريل 2016 في منتدى: Steam Traction
  9. Allegheny
    مشاركة

    Replica builds for heritage lines.

    I stand corrected
    المشاركة بواسطة: Allegheny, ‏28 إبريل 2016 في منتدى: Steam Traction
  10. Allegheny
    مشاركة

    Replica builds for heritage lines.

    In the true spirit of this comment, I'd go for a "Hush-Hush" and a Turbomotive. For non-replicas, I have a 5AT and a Quadraplex Super Garrett - a...
    المشاركة بواسطة: Allegheny, ‏28 إبريل 2016 في منتدى: Steam Traction
  11. Allegheny
    مشاركة

    Replica builds for heritage lines.

    A replica of GWR 102 "La France", the de Glehn compound Atlantic, that was trialed at the beginning of the last century, but updated with more...
    المشاركة بواسطة: Allegheny, ‏25 إبريل 2016 في منتدى: Steam Traction
  12. Allegheny
    مشاركة

    Strathspey Railway

    It's the gradient profile of the line north of Grantown that fascinates me. As mentioned above, the Forres end of the line has been built over,...
    المشاركة بواسطة: Allegheny, ‏25 إبريل 2016 في منتدى: Heritage Railways & Centres in the UK
  13. Allegheny
    مشاركة

    6023

    The other aspect of efficient draughting is the reduction of back pressure on the pistons. This leads on to a reduction of coal and water...
    المشاركة بواسطة: Allegheny, ‏23 إبريل 2016 في منتدى: Steam Traction
  14. Allegheny
    مشاركة

    Flying Scotsman

    Is anything planned for Flying Scotsman's 100th birthday?
    المشاركة بواسطة: Allegheny, ‏28 مارس 2016 في منتدى: Steam Traction
  15. Allegheny
    مشاركة

    46235 City of Birmingham

    I would think that the lower back-pressure of the double Kylchap also makes a difference.
    المشاركة بواسطة: Allegheny, ‏2 مارس 2016 في منتدى: Steam Traction
  16. Allegheny
    مشاركة

    Strathspey Railway

    Out of curiosity, does the Strathspey Railway have any ambitions to extend over Dava moor?
    المشاركة بواسطة: Allegheny, ‏19 فبراير 2016 في منتدى: Heritage Railways & Centres in the UK
  17. Allegheny
    مشاركة

    P2 Locomotive Company and related matters

    If possible, it would be interesting to couple it to a Pendolino, and the use the regenerative braking to load it up!
    المشاركة بواسطة: Allegheny, ‏19 فبراير 2016 في منتدى: Steam Traction
  18. Allegheny
    مشاركة

    46203 Princess Margaret Rose

    I'm slightly confused by this post. Is it 9100 or 9236 which has the 40-element superheater?
    المشاركة بواسطة: Allegheny, ‏18 فبراير 2016 في منتدى: Steam Traction
  19. Allegheny
    مشاركة

    P2 Locomotive Company and related matters

    My interpretation of the Kylchap (and similar) is that the blastpipe pressure is divided between two or more nozzles in series. Would this make it...
    المشاركة بواسطة: Allegheny, ‏14 فبراير 2016 في منتدى: Steam Traction
  20. Allegheny
    مشاركة

    P2 Locomotive Company and related matters

    Jos, I have a copy of "The fire.." Could you please direct me to which section of the book the calculations for sequential sections are in. Thanks...
    المشاركة بواسطة: Allegheny, ‏14 فبراير 2016 في منتدى: Steam Traction
  21. Allegheny
    مشاركة

    Flying Scotsman

    At 40 mph, FS will produce an exhaust beat every 60 milliseconds. Against that background I think your hearing would detect an error of 10 millisec.
    المشاركة بواسطة: Allegheny, ‏6 فبراير 2016 في منتدى: Steam Traction
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