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MarkyT's latest activity
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MarkyT replied to the thread More questions about lever frames.Yes semaphore signal machines were quite common in early electric signalling. Economical point operation is the term for single lever... -
MarkyT replied to the thread HS2 Old Oak Common.I see Hythe Rd station as being mainly about putting the future redevelopment of its immediate surroundings on the LO map, and the link...
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MarkyT replied to the thread Lines for Level Crossing Closures.No. In the previous mechanical layout, there was a scissors crossover just north of the crossing so trains could be started from #1, but...
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MarkyT replied to the thread Which junctions would you grade-separate?.What's the extra capacity/flexibilty for? To create new capacity or better manage that which exists today. I'd argue that at critical...
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MarkyT replied to the thread Lines for Level Crossing Closures.It's the lack of a left handed crossover that prevents the starting of a train towards Newton Abbot from platform 1. At the other end...
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MarkyT replied to the thread Cable theft delays to reduce?.Different manufacturers may have different concepts and circuits internally. That's a right-side failure at least. There are special...
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MarkyT replied to the thread Which junctions would you grade-separate?.I'm hoping Southeastern go for a level boarding solution for new metro stock. That comes with extending gap filler steps that could be a...
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MarkyT replied to the thread Which junctions would you grade-separate?.Something like this perhaps:
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MarkyT replied to the thread Which junctions would you grade-separate?.My suggestion is here: https://www.railforums.co.uk/threads/fantasy-bristol-parkway-grade-separation.278099/post-7216185
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MarkyT replied to the thread Cable theft delays to reduce?.When LEDs became available. RT/NR wanted to change as many filament lamps as possible to the new tech to save on the huge maintenance...
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MarkyT replied to the thread Cable theft delays to reduce?.They were prone to contact welding in certain scenarios. Still used in non-vital circuits for indications, telemetry followers etc...
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MarkyT replied to the thread Cable theft delays to reduce?.Definitely. In the 1960s and 70s, modern colour light signalling was often referred to as power signalling. The prospect of endless...
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MarkyT replied to the thread Single line sections that would benefit from becoming multitrack?.Very true. That may not matter much on an isolated branch line with almost no through running, but elsewhere, where initial delay can be...
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MarkyT replied to the thread Chiltern abandoning West Midlands on Sunday.People moan about bustitution, but this is another level. the industry clearly has precedent now for any service to be summarily...
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MarkyT replied to the thread Aylesbury electrification - how would this happen?.I recall previous suggestions to build additional side platforms for the lower-floored tube stock. The high floor Met trains would open...
