JayMac
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« on: May 14, 2015, 01:03:11 » |
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"A clear conscience laughs at a false accusation." "Treat everyone the same until you find out they're an idiot." "Moral indignation is a technique used to endow the idiot with dignity."
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Chris from Nailsea
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« Reply #1 on: May 14, 2015, 01:14:05 » |
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William Huskisson MP▸ was the first person to be killed by a train while crossing the tracks, in 1830. Many more have died in the same way since then. Don't take a chance: stop, look, listen.
"Level crossings are safe, unless they are used in an unsafe manner." Discuss.
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stuving
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« Reply #2 on: May 14, 2015, 01:20:19 » |
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That shows it as it was when it arrived. The schedule said the engine was to turn round via the triangle at Bristol, after the diesel at the back had hauled the whole train into the depot. For some reason that never happened, so on the return trip the engine ran tender first.
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Chris from Nailsea
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« Reply #3 on: May 14, 2015, 01:28:02 » |
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Please pardon my ignorance / possible lack of attention in the past, but how far can an engine go 'tender first' - and at what speed?
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William Huskisson MP▸ was the first person to be killed by a train while crossing the tracks, in 1830. Many more have died in the same way since then. Don't take a chance: stop, look, listen.
"Level crossings are safe, unless they are used in an unsafe manner." Discuss.
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bobm
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« Reply #4 on: May 14, 2015, 01:47:57 » |
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I don't have a definitive answer, but there are pictures on the internet of 34046 Braunton travelling tender first between Exeter and Par last year.
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Chris from Nailsea
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« Reply #5 on: May 14, 2015, 01:53:26 » |
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William Huskisson MP▸ was the first person to be killed by a train while crossing the tracks, in 1830. Many more have died in the same way since then. Don't take a chance: stop, look, listen.
"Level crossings are safe, unless they are used in an unsafe manner." Discuss.
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JayMac
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« Reply #6 on: May 14, 2015, 01:58:40 » |
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That shows it as it was when it arrived. The schedule said the engine was to turn round via the triangle at Bristol, after the diesel at the back had hauled the whole train into the depot. For some reason that never happened, so on the return trip the engine ran tender first.
Not just a triangle at Bristol. Also a loop with a pointy bit near Bedminster. Sort of more like a speech bubble than a triangle. Two options at Bristol for a steam loco that's arrived from the east. Detach and reverse up the Up Filton to Dr Days Junction then forward round the Rhubarb Curve to North Somerset Junction and backward onto the opposite end of the carriages in the station. Or detach and head out toward Bedminster and then reverse right round the St Phillips Marsh loop and, again, back on the carriages.
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« Last Edit: May 14, 2015, 02:06:50 by bignosemac »
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"A clear conscience laughs at a false accusation." "Treat everyone the same until you find out they're an idiot." "Moral indignation is a technique used to endow the idiot with dignity."
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JayMac
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« Reply #8 on: May 14, 2015, 02:23:33 » |
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When the British Pullman arrived at Temple Meads there was no diesel in rear. I saw it come in.
Also I didn't see any diesel at Barton Hill or looped in the station.
BR▸ Standard Class 70000 'Britannia' was on shed at Barton Hill and appeared to be in steam, but I'm not sure she was diagrammed for the British Pullman, so may just have been coincidence a second kettle was in Bristol yesterday.
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"A clear conscience laughs at a false accusation." "Treat everyone the same until you find out they're an idiot." "Moral indignation is a technique used to endow the idiot with dignity."
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stuving
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« Reply #9 on: May 14, 2015, 09:40:06 » |
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Looking at that movement in RTT» (087D, not as numbered in uksteam.info), its start and end at the East Depot show in realtime, but nothing in between. That could mean anything or nothing, of course. But she did come through Wokingham backwards, so I assume the 3-point turn did not happen. Looking closer at the movements as described on uksteam.info, the Bristol ECS▸ moves (507M and 508M) did not involve a diesel. Again, that omission may not be reliable evidence, though for the moves in and out of Victoria the diesel is shown. Actually dragging a diesel behind a commercial steam tour is pretty rare, I think. I can't imagine the train being propelled from the Carriage Line at Bristol West to the East Depot, even on the Down Through, but that is what 507M suggests. Which leaves plan C - running round the train in the Carriage Line or in the station (Platform 9 or 3, whichever you believe). Or something.
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Red Squirrel
Administrator
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Posts: 5456
There are some who call me... Tim
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« Reply #10 on: May 14, 2015, 11:01:17 » |
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Please pardon my ignorance / possible lack of attention in the past, but how far can an engine go 'tender first' - and at what speed?
I found this article which goes into, with what to my mind is actually rather too much detail, the practicalities of tender-first running. The short answer is 'as far as you want, but slower'. I seem to remember reading somewhere that a 4575 class could go 60mph chimney first, and 45mph bunker first, as a not very good example given that that's a tank engine... the technical problems include stability, coal dust in yer eyes, who's supposed to be watching out for the boards (as we're now effectively left-hand drive, or right-hand for a Southern loco) and many others.
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Things take longer to happen than you think they will, and then they happen faster than you thought they could.
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broadgage
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« Reply #11 on: May 14, 2015, 11:19:30 » |
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Please pardon my ignorance / possible lack of attention in the past, but how far can an engine go 'tender first' - and at what speed?
On strictly mechanical grounds, a steam locomotive works the same whether running forwards or in reverse, all the moving parts should work in the same way in either direction. In practice though, running "backwards" is avoided when possible, the view is inferior and the fireman would be largely facing the fire and have no forward view when so doing. If the coaling was excessive or carelessly done, the crew might be struck by coal falling from the tender. The permitted speed was often reduced when running tender first, either due to the reduced sighting, or because the small wheeled tender at the front was considered less stable. Running tender first was preferred in the exceptional case of filming from the footplate as smoke and steam would not obstruct the view, but was otherwise avoided if possible.
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A proper intercity train has a minimum of 8 coaches, gangwayed throughout, with first at one end, and a full sized buffet car between first and standard. It has space for cycles, surfboards,luggage etc. A 5 car DMU▸ is not a proper inter-city train. The 5+5 and 9 car DMUs are almost as bad.
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TaplowGreen
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« Reply #12 on: May 14, 2015, 17:29:22 » |
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I saw it just outside Reading, 10 am-ish, very impressive!
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Red Squirrel
Administrator
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Posts: 5456
There are some who call me... Tim
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« Reply #13 on: May 14, 2015, 17:41:17 » |
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...the view is inferior...
Not necessarily - for example, there's not much of a view going forwards in many classes (that pesky boiler thing gets right in the way); the view over the tender or bunker can be better.
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Things take longer to happen than you think they will, and then they happen faster than you thought they could.
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