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UNDERGROUND TRAIN QUESTION / 1986 PROROTYPE STOCK
"Soniakostas" wrote in message
1) Firstly when a train goes does the first car pull and the last one push ? otherwise how just one car can pull so many other cards same size as itself ? In the rasilway trains one carriage is pulling and the last is pushing i was wondering if the same happens to the underground trains. The front car pulls; the back car pushes; and some of the cars in the middle push and pull at the same time! 2) I noticed sometimes in a train with many carriages they put in a middle an engine car but they have it as a passenger car not doing anything, howcome they didnt put a normal passenger car and they put an engine car in the middle as well ? (usually circle line or metropolitan) The theory is that additional driving cabs make the formations more versatile. 3) Going back to the past i would like to ask what was the purpose exactly of the so called "prototype trains" back in 1986 like the green one here http://world.nycsubway.org/perl/show?23602 and here http://world.nycsubway.org/perl/show?23618 Did these trains ever carried passengers or they just used them to test the engineering of the forthcoming trains ? if thats what they were used for howcome they were completely furnished inside with seats maps and everything ? Lastly were these prototype trains in service long andf how many were created if anyone knows There were 3 of these prototype trains - each of four cars (each of the sets was painted a different colour). They were used as trials for the 1992 tube stock which is used on the Central Line and the Waterloo and City Line. As prototypes they saw passenger service on the Jubilee Line; it is a Jubilee Line map that you can see in the second picture and even Jubilee Line passengers deserve a few seats. Bob |
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