And then there were two.... S Stock

S Stock no. 21001 sits at Neasden Depot photo ©  Andy Davison. 


The S Stock is a new type of Train built by Bombardier in Derby. The Trains are due to take over the Metropolitan Line, District Line, Circle Line and Hammersmith and City Line. Prior to their expected delivery this year, two pre-delivery units have been built and sent down to Neasden Depot in North West London for extensive testing. The new Trains are part of Bombardier's Movia family which the 2009 stock currently operating on the Victoria Line belong to. The S Stock will have an articulated 'style' carriage structure the same style used on the recently introduced Class 378s, this means you can see right the way down the Train. They will have a limited top speed of 62mph and the current line voltage on the Metropolitan Lines we gather will be raised from 630V to 750V.  The First stock to be replaced will be the A60/62 Stock currently operating on the Metropolitan Line they are just over 50 years old but are probably some of the best stock operating on the Network. Next are the C Stock that currently operate on the Circle and Hammersmith & City Line they also take up small duties on the District Line between Edgware Road and Wimbledon. The C Stock are probably some of the worst stock operating on the Network I'm sure any enthusiast will agree. Then last to be replaced are the D Stock, these trains will be replaced in 2013 as the last of them were refurbished in 2008. They operate solely one the District Line however for a short period time they were used on the East London Line.