Class 90 commissioning 1988
The class 90 bo-bo locomotives were designed to complement the existing Class 87 and in fact were originally designated Class 87/2. They were designed for both locomotive-hauled and 'Push-Pull' operation and in the latter mode could be operated remotely from a Driving Van Trailer (DVT) vehicle using a Time Division Multiplex (TDM) system of control by which 'signals' are sent through the standard Railway Clearing House (RCH) lighting jumper cables to operate the controls of the locomotive. I remember undertaking TDM trials on the WCML with a couple of class 85s and a rake of Mk2 coaches, mainly between Crewe Basford Hall and Stafford. The locos were not permanently fitted for TDM just 'jury-rigged' and monitored. Later when the Mk3 DVTs arrived they were also trialled in a similar way but with a class 86 which would be coming off works fitted with TDM kit. Rated at 5,000 HP with a maximum permitted speed of 110 mile/h they were well able to deal with the passenger services on the WCML 90001 was delivered to the RTC, Derby for trials in late Autumn 1987. The fleet of 50 locos were introduced onto the WCML in 1988 and I was part of the team responsible for the commissioning of the locomotives. |
Here is a selection of photos of the class 90 on test.............
Click on the picture for a bigger image - photos are the author's unless otherwise credited
...........and in service
In the early 1990s, with the sectorisation of British Rail, 26 locomotives were dedicated for freight traffic; they were reclassified Class 90/1 and renumbered 90125-150 by the addition of 100 to the original number. The modifications included lowering the maximum speed to 75 mph (121 km/h) and isolating the electric train supply. |
Loadbank testing work
In 1996 Freightliner inherited 10 Class 90/1 locos, These have since been returned to their original Class 90/0 configuration.
More pictures will be added as time permits
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