- London Underground T Stock
Infobox Underground stock
name = T Stock
InService = 1927-1962
Manufacturer = Birmingham RC&W
The T Stock was originally built in various batches by Metropolitan-Vickers and Birmingham RC&W for the
Metropolitan Railwayin 1927-31 for use on electric services from Baker Street and the City to Watford and Rickmansworth, though rarely some worked on the Uxbridge branch.
The earlier batches were built from wood and sandwiched trailers of 1898-1923 vintage, however later batches were steel in construction and worked with new built trailers. As built the group has some variations in equipment, mostly to allow use with existing stock such as the Saloon and Ashbury trailers and leading to imcompatabilities within the class, however upon transfer the London Transport this was rectified and the entire fleet largely standardized about 1938.
T stock never ran to Aylesbury, though latterly worked to Chesham and Amersham after electrification. Prior to this, trains destined to beyond Rickmansworth were hauled by the famous Metropolitan Vickers Bo-Bo electric locomotives until Rickmansworth where a changeover to steam traction occurred.
electric multiple unittrains had slam doors with rounded tops, thought to be less prone to damage if accidentally opened in the tunnels north of Baker Street.
The stock was replaced from 1961 by the A60 and A62 Stock with the final train running on 5th October 1962.
In 1961, two driving motor vehicles were converted into sleet locomotives. These were numbered ESL118A and ESL118B, having previously been 2758 and 2749 respectively. After being withdrawn, both cars were preserved, currently located at the
Spa Valley Railway
The first coaches of the first batch (1927) had westinghouse brakes, Metro-Vickers control systems and MV153 motor; they were used to replace the motor cars working with Ashbury stock trailers that formed 'W' trains.
The rest of the coaches from the first batch had the same motor equipment but used vacuum brakes instead. They ran with converted Dreadnoughts of the 1920/23 batches to form 'MV' stock.
The second batch (of 1929) were very similar in terms of equipment to the first coaches of 1927 and were interchangeable. This batch included specially built trailers and when running with which were known as 'MW' trains; the W indicating Westinghouse Air Brakes were fitted.
The last batch (1931) were like the previous batch but had equipment by the GEC and used WT545 motors. They were found not to be as compatible as hoped, and remained segregated until the LPTB standardisation of Metropolitan Railway rolling stock.
When standardised, the MV stock trains were converted to air brakes. The ashbury coaches were withdrawn eventually and replaced by 7 more converted Drednaught coaches. Folling a reshuffle this allowed 9x8 coach and 10x6 coach trains, which were then designated 'T' stock. 22 motor cars remained spare however, but by 1961 this had been reduced to 6 spare.
Source: 'Steam to Silver', J Graeme Bruce, 1970
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