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Sheff 近期的活动

  1. Sheff 支持 flying scotsman123 在 North Yorkshire Moors Railway General Discussion 内发表的帖子.

    Just had to check which thread, indeed which forum, I was on reading that! [emoji15] Sent from my PGT-N19 using Tapatalk

    2026-07-26 , 20:32

  2. Sheff 支持 Steve 在 North Yorkshire Moors Railway General Discussion 内发表的帖子.

    There are lots of riveted steel fireboxes out there but there are a growing number of welded steel fireboxes. The problem with a riveted box is it requires lap joints and that is a weak spot compared with a welded box because there is a greater...

    2026-07-26 , 09:34

  3. Sheff 回复主题: North Yorkshire Moors Railway General Discussion.

    So you wouldn’t want to oil fire them ?

    2026-07-26 , 07:09

  4. Sheff 支持 std tank 在 North Yorkshire Moors Railway General Discussion 内发表的帖子.

    Stanier Class 5s 44718 to 44727 had riveted steel inner fireboxes.

    2026-07-26 , 07:08

  5. Sheff 回复主题: North Yorkshire Moors Railway General Discussion.

    I stand corrected then. I’m only acquainted with WCs, S160s and Tornado.

    2026-07-25 , 17:57

  6. Sheff 回复主题: North Yorkshire Moors Railway General Discussion.

    …. for completeness, cf a steel box which being all welded doesn’t have laps.

    2026-07-25 , 16:47

  7. Sheff 支持 torgormaig 在 North Yorkshire Moors Railway General Discussion 内发表的帖子.

    I dont think it does either. There is an interesting website about the current restoration of Alaskan Railways N0. 557, an oil burning S160. It included a video of the laying of fire bricks in the firebox which is clearly without a combustion...

    20260724_224453 (1).jpg 2026-07-25 , 16:44

  8. Sheff 支持 Steve 在 North Yorkshire Moors Railway General Discussion 内发表的帖子.

    That's an interesting question and I don't know the answer. Looking at photos, I don't think it does but that's only a guess.

    2026-07-25 , 16:44

  9. Sheff 支持 Steve 在 North Yorkshire Moors Railway General Discussion 内发表的帖子.

    I believe the prime area for degradation in copper boxes are the lap joints where the amount of copper is much thicker than the rest of the box. Although copper is a good conductor, the temperature gradient is fairly constant, thus causing the...

    2026-07-25 , 16:43

  10. Sheff 支持 Trevor Beglin 在 North Yorkshire Moors Railway General Discussion 内发表的帖子.

    Sorry to be that person but might be worth creating a new thread for oil burning as the threads deviated a little

    2026-07-25 , 16:43

  11. Sheff 支持 TonyW 在 North Yorkshire Moors Railway General Discussion 内发表的帖子.

    I did: *** Copper fireboxes are actually suitable for oil firing and have been used successfully with liquid fuels, meaning the premise that they cannot be used is incorrect. Operational Factors Flame Impingement: Direct contact between a raw,...

    2026-07-25 , 11:59

  12. Sheff 支持 Kylchap 在 P2 Locomotive Company and related matters 内发表的帖子.

    IIRC the A1Trust carry out final assembly of mating components with a film of wet paint between the two, which is supposed to give protection which is superior to assembly with either bare metal faces or faces previously painted where the paint...

    2026-07-24 , 22:35

  13. Sheff 回复主题: P2 Locomotive Company and related matters.

    Monobloc finally installed today https://mailchi.mp/a1steam/monoblocfitted?e=412f4848b6

    2026-07-24 , 20:12

  14. Sheff 回复主题: Tornado.

    P2 Monobloc installed https://mailchi.mp/a1steam/monoblocfitted?e=412f4848b6

    2026-07-24 , 20:07

  15. Sheff 回复主题: North Yorkshire Moors Railway General Discussion.

    You can ask Google AI why and you’ll get some plausible answers, some maybe not so much ….

    2026-07-24 , 17:22
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