MellishR's Recent Activity
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MellishR liked LMS2968's post in the thread GWR four-cylinder arrangement?.
Yes it can, but there are still limits as to the power which can be generated and then delivered; diesels (and electrics) do not have super powers when it comes to climbing gradients. There are still limits. There are advantages and...
Jul 13, 2026 at 7:08 AM -
MellishR liked ghost's post in the thread New build M&GN C class.
Neither project would be mentioned here as this is a thread for a specific standard gauge loco. Gowrie is mentioned in several of the FR threads. The ZA6 has its own thread which was updated in March 2026. If you have updates, feel free to...
Jul 12, 2026 at 9:41 PM -
MellishR replied to the thread GWR four-cylinder arrangement?.
Thank you for the point about traction current. In effect that limits the tractive effort at low speeds, if the adhesion limit isn't reached first. But can diesel not produce a more nearly constant power at the rail than a steam loco over a range...
Jul 12, 2026 at 9:39 PM -
MellishR liked Steve's post in the thread GWR four-cylinder arrangement?.
What’s wrong with the first post? Within the limitation of adhesion, a diesel locomotive is a constant horsepower machine whereas a steam locomotive is a constant tractive effort machine within the limitations of its boiler.
Jul 12, 2026 at 9:34 PM -
MellishR liked Jamessquared's post in the thread Flying Scotsman.
It’s interesting looking at dates and times that the Stourbridge - Bristol and Bristol - Minehead trips look like they are essentially a single combined day out for the loco and carriages, but two separate sets of passengers. That’s clever, it...
Jul 12, 2026 at 9:32 PM -
MellishR liked Romsey's post in the thread VT: Ticket to Ride with 7029 - 11/07/26.
As a comment there was generally less electrical signalling equipment trackside 60 years ago. Cheers, Neil
Jul 12, 2026 at 11:02 AM -
MellishR liked 45698Mars's post in the thread VT: Ticket to Ride with 7029 - 11/07/26.
A classic example in this photograph of the perils of not clearing lineside vegetation. The metal cabinet didn't catch fire, it was obviously surrounded by vegetation that did and the contents of the cabinet were effectively "cooked". I am old...
Jul 12, 2026 at 11:02 AM
