British Rail Class 901 - 901001

901001

This unit was converted in 1986 from a Class 101 power-twin unit. It was rebuilt as an Ultrasonic Test Train, replacing the former-Derby Lightweight unit that was previously used for this task. The unit was substantially rebuilt, including new headlight clusters, sealing of many windows, and later fitting of video and floodlight equipment for night-time use.

The unit also incorporates a heavily-modified former Class 432 4Rep driving motor vehicle, which is now an intermediate trailer.

The Units Class 101 Power Cars are unique, as they are the only first generation DMU cars to have been converted to Air Brakes (both Westinghouse and Electro-Pnumatic). Most of the brake equipment came from former Class 50 Diesel Electric Locomotives, with some parts from ex-Southern Region EMU stock. All first generation DMUs were fitted with Vacuum Brakes from new.

The Power Cars DB 977391/392 are both now resident on the Churnet Valley Railway,for permeant way use. It is doubtful how much use the unit will get - as it is expensive to run. Both the units engines AND the units in-built generator unit need to be running - the generator provides a 240Vac supply for the battery charger and compressor (the units original engine driven air pumps would not be able to cope with air demand for Air brakes, air ep gear changing valves and the Air Conditioning units - which also require air.

In addition, special keys are required for the unit - which provide access to the doors, and only certain keys will fit the Drivers control switch.

There are also precious few Drivers who have experience of driving the unit with Air Brakes - although those that have say it is an exceptionally responsive train to drive, and can stop on a six-pence

The unit was originally painted in a unique silver and grey livery. This was replaced by Serco red/grey in the mid-1990s, followed by Railtrack Blue/lime green and finally Network Rail's all-over yellow.

This unit was cut-up on site at Oakamoor February/March 2012.