5604 Class 56 Trainload Freight three-tone grey Heavy Freight Diesel Locomotive Controller-Accessories as these units were non-standard

as these units were non-standard compared to other later DMU vehicles

Variable pulse width frequency motor regulation (up to 40kHz)

which started with Class 24 in the late-1950s

Two balanced and matched motors for maximum pulling power and slow speed runnning

Unobstructed interior including seat and table detail

5604 Class 56 Trainload Freight three-tone grey Heavy Freight Diesel Locomotive Controller-Accessories as these units were non-standardThe first of BR's heavy Type 5 freight diesels, introduced to cope with an increase in coal traffic after the 1973 oil crisis. The first 30 were built by Electroputere in Romania under sub contract from Brush, while the rest were constructed by BREL at Doncaster (56031 115) and Crewe (56116 135). Although they were retired by EWS in 2003, a number have been reactivated for use by freight companies such as Colas, UK Rail Leasing and, soon, GB