LMS2968's Recent Activity
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LMS2968 odgovara u temi GWR four-cylinder arrangement?.
I'd like to see the evidence! Even with balancing, which would not eliminate all the out of balance stresses anyway (you can't balance to 100% of the reciprocating masses), and which becomes ever more problematic as speed rises, you still have...
15. Srpanj 2026. u 10:36 -
LMS2968 liked ross's post in the thread GWR four-cylinder arrangement?.
I have to ask Mr Hermod, how familiar are you with Britain and it's geography? At times you have stated that any locomotive with driving wheels greater than 5' is an error, and that designing locomotives to operate at more than 75mph is...
15. Srpanj 2026. u 06:38 -
LMS2968 odgovara u temi GWR four-cylinder arrangement?.
I remember the day, actually night, very well; I had long left the railway by then but was enjoying a ride from Warrington to Kingmoor and return courtesy of a friend, an Arpley man at that time. It was intriguing how the amps to that traction...
13. Srpanj 2026. u 17:24 -
LMS2968 odgovara u temi GWR four-cylinder arrangement?.
This is all absolutely true but fixed and marine plant tends to work at a constant speed and power output over a long period so the 'maximum' and 'continuous' ratings are vital and staying within them is critical. A railway locomotive however,...
13. Srpanj 2026. u 10:25 -
LMS2968 liked johnofwessex's post in the thread GWR four-cylinder arrangement?.
Many many years ago I was talking to a former Chief Engineer of the Maid of Kent - Denny built steam turbine cross channel ferry. He said that it was a dream, if you were running late you just opened everything up to full and away she went...
13. Srpanj 2026. u 08:09 -
LMS2968 odgovara u temi 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...
13. Srpanj 2026. u 06:47 -
LMS2968 liked Spamcan81's post in the thread GWR four-cylinder arrangement?.
Challenger 3985 slogging up the 1 in 100 of Archer Hill at “walking pace”. [MEDIA]
12. Srpanj 2026. u 19:30 -
LMS2968 odgovara u temi GWR four-cylinder arrangement?.
What's wrong with it is that it suggests, even if it doesn't state, that whereas a steam engine struggles against gradients a diesel will fly up it with ease, which isn't the case. The power output of any internal combustion engine varies with...
12. Srpanj 2026. u 19:14 -
LMS2968 odgovara u temi GWR four-cylinder arrangement?.
Erm . .. have you ever tried driving a heavily loaded diesel up a steep gradient?
12. Srpanj 2026. u 15:12 -
LMS2968 odgovara u temi GWR four-cylinder arrangement?.
No. It was always steam. One of the main functions of the bankers on Shap often wasn't so much to assist the train engine to get the load to the top but to act as a defence against coupling breakage and runaways of unfitted goods trains beyond...
11. Srpanj 2026. u 21:00 -
LMS2968 liked Jamessquared's post in the thread GWR four-cylinder arrangement?.
So just imagine the logistics for a while. In the normal scenario, a loaded rain comes to rest at Tebay (for Shap). The banker runs onto the back from a convenient siding; within a few minutes the train is back on its way. The banker drops off...
11. Srpanj 2026. u 19:52 -
LMS2968 liked Sheff's post in the thread GWR four-cylinder arrangement?.
But was only for short bursts up the bank, with time between turns to clean the fire and box it up again .
11. Srpanj 2026. u 19:14 -
LMS2968 odgovara u temi GWR four-cylinder arrangement?.
No. Even Beattock was only ten miles long and the engine would arrive with a well prepared fire and plenty of steam and, important, water in the boiler, and the preparation would have started at least twenty minutes before the start of the bank....
11. Srpanj 2026. u 16:56 -
LMS2968 liked Jamessquared's post in the thread GWR four-cylinder arrangement?.
And the overall financial efficiency of that? You are falling into the same trap as everyone else, finding ever more elaborate workarounds to enable one technological option while ignoring the total cost of operation. Tom
11. Srpanj 2026. u 11:48 -
LMS2968 liked Jamessquared's post in the thread GWR four-cylinder arrangement?.
How do you propose to fire a 6,000hp steam loco? That’s well beyond the capability of a single fireman, so you fall back presumably on a mechanical stoker - which rather throws away the enhanced cylinder efficiency by creating worse boiler...
10. Srpanj 2026. u 16:22
