Over the years, London Underground has acquired various types of engineering stock to help with the construction of new lines and maintenance of existing lines. Some of these wagons were inherited from its predecessors, many were built new and some were acquired second-hand from the main-line railways. Several types of specialist wagons have been used.

Rail Grinders

With track works everywhere are facing continued challenges of maintaining track in shortened work blocks and with limited resources. 

An effective rail grinding program is a key component for the london tube  maintenance plan.   rail grinding, extended rail life, Fuel savings, reduced surfacing cycles, extended track component life, increased axle loads, Increased train speeds and Improved ride quality and passenger comfort

 

 Here’s my first  version of a Plasser and Theurer Tamper machine used by London Underground.
This tamper machine is very different to the normal size used by Network Rail as this one has to work in tunnels.
A Tamper is a very clever bit of kit. It’s used to sort out the track by straightening, putting in cants, adjusting the height, pretty much anything to ensure a nice smooth ride for trains.

The London Underground 1973 Stock is a type of rolling stock used on the Piccadilly line of the London Underground. It was introduced into service in 1975 with the extension of the line to Hatton Cross in 1975, followed by a further extension to Heathrow Central in 1977.

In the early 1970s London Transport placed an order for a new fleet of trains to replace the 1959 stock, the 1938 stock and 1962 stock vehicles  which previously operated on the Piccadilly line.

Built between 1972 and 1975 by Metro Cammell in Birmingham, the first unit entered service on 19 July 1975 and the last was introduced by 1977. The trains featured longer cars and larger door space than the previous ones, being designed for airport travellers with luggage.

Finding tube stock is not easy so I've gone to a few bring and buy model train shows lately and purchase  some old Mark 1 British Railways’ lines coaches

Cutting the top window off and lowering the roof by 8mm.

The next stage will be to add engines and change the coupling to bring the cars closer

so far so good