144 Book of Engineering 



The pioneer Diesel-electric set built by 

 the English Electrical Company is to the 

 order of the L.M.S. 



The 5OO-h.p. engine is of the Beardmore 

 type, which has eight cylinders, the engine 

 being coupled to a 340 k.w. 6oo-volt 

 generator and a 8 k.w. exciter. 



The conversion of a unit of the electric 

 stock used on the Manchester-Bury line to 

 Diesel-electric propulsion has been carried 

 out by the engineering staff of the railway. 

 The engine has four speeds and the gener- 

 ator supplies power to two traction motors, 

 each of aSo-h.p. mounted on one of the 

 motor coach bogies. In normal services the 

 motor coach will operate with three trailer 

 coaches, making a compact and useful train 

 with driving compartments at either end. 



A i2O-volt battery consisting of 60 cells 

 is provided for starting the engine. The 

 battery is connected by means of a change- 

 over switch to the generator; the latter acts 

 as a motor, and rotates the set until the 

 engine commences to fire. The battery is 

 then disconnected from the generator. In 



