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26D_Ms letzte Aktivitäten

  1. 26D_M antwortete auf das Thema The 10A Allocation.

    Thanks, we might be getting mixed up here as I think 5231 went mainline around 2005 but 45305 returned a bit later, maybe 2010? I also have some memory of Ian Riley stating he didn't think it was wise to have LMS 5s 'plated' for 75mph but again I...

    11 Juni 2026 um 14:38

  2. 26D_M antwortete auf das Thema The 10A Allocation.

    Yes I know, I was simply pointing out John that there was no difference in max speed using 2 otherwise very similar designs, dimensionally where one has rollers and the other does not. The analogy being that black 5s are all 60mph so the addition...

    11 Juni 2026 um 10:42

  3. 26D_M antwortete auf das Thema The 10A Allocation.

    Eh? I'm not arguing with the magazine report, I'm agreeing with the technical analysis others have made vis bearing/driving wheels differential on permitted max mph. As you said David Smith says 4767 can go faster because it has rollers and...

    11 Juni 2026 um 10:27

  4. 26D_M gefällt class8mikados Beitrag in dem Thema The 10A Allocation.

    Cant think that the use of roller bearings has ever been a factor in setting mainline loco speed limits. Some dispensation would need to be sought for a Black 5 to run at 75mph, but perhaps because of a proposed alteration to balancing or perhaps...

    11 Juni 2026 um 10:14

  5. 26D_M antwortete auf das Thema The 10A Allocation.

    Indeed, as an example a Britannia and rebuilt Bulleid are both 75mph but the former has rollers, the latter plain whilst both have 6' 2" drivers and are Pacifics.

    11 Juni 2026 um 10:13
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