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Miff's Recent Activity

  1. Miff liked Fireline's post in the thread Rother Valley Railway.

    The RVR blog has made one thing very clear. The whole length of line is going to be a construction site. Given the problems we have had with the landowners, they have asked that the site is not visited by anyone without permission. We'd be...

    Dec 2, 2023 at 12:52 PM

  2. Miff liked Big Al's post in the thread Steam speed records including City of Truro and Mallard.

    Just to say that this discussion is one of many fascinating threads that occasionally pop up on Nat Pres. I won't go off piste too much except to say that in the notebooks of many ex Southern enthusiasts including @gricerdon are detailed speed...

    Nov 29, 2023 at 8:03 AM

  3. Miff liked Jamessquared's post in the thread Steam speed records including City of Truro and Mallard.

    1) No 2) See 1 :) Being kind ... The forces act instantaneously. Momentum is real, but in physical terms, change the forces = instantaneous response as described by F=ma. However - the real world experience of momentum when applied to a train...

    Nov 27, 2023 at 9:08 PM

  4. Miff liked 35B's post in the thread Steam speed records including City of Truro and Mallard.

    I understood (well, think I did;)) @Jamessquared; I'm afraid @Hermod went straight over my head.

    Nov 27, 2023 at 9:08 PM

  5. Miff liked 35B's post in the thread Steam speed records including City of Truro and Mallard.

    This scientific ignoramus has heard of something called "momentum". In his ignorance, and quite possibly wrongly, he understands this to mean that a train travelling at a given speed will take a little time before the forces described above...

    Nov 27, 2023 at 7:10 PM

  6. Miff replied to the thread Steam speed records including City of Truro and Mallard.

    I guess you're right but @Jamessquared's additional words made it far more intelligible to someone like me, who only studied Physics to O-level :)

    Nov 27, 2023 at 7:08 PM

  7. Miff replied to the thread Steam speed records including City of Truro and Mallard.

    And, presumably, anyone else wanting to carry out similar research (or attempt to refute Simon's after he's published) can go to the NRM and request their own copy on the same terms.

    Nov 27, 2023 at 5:44 PM
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