NODDING ALONG THE ‘PACER’ STORY › PART 3
AFTER the introduction of the BRE-Leyland Class 141s in September 1983, and the subsequent order of the first 50 Class 142s in January 1984, one could be forgiven for thinking the Derby/Workington partnership had the light railbus market pretty well cornered. After all, they had effectively developed the concept from the prototype LEV1 into something cheap and workable, if not necessarily desirable or comfortable.
Yet BRE-Leyland did not have the monopoly on the manufacture of the ‘Pacers’. Even as the Class 141 design was evolving into the ‘142s’, British Rail invited three other bus builders – Metro-Cammell of Washwood Heath, Walter Alexander of Falkirk and Marshalls of Cambridge – to submit their own designs for a lightweight multiple unit based upon the ‘141s’, and tender for their construction.
The contract for 25 two-car units was thus awarded jointly to Walter Alexander and Andrew Barclay of Kilmarnock on January 16, 1984 at the same time BRE-Leyland won the Class 142 order. Alexander would build the bodies and Barclay the underframes (to the Derby design), final assembly being carried out in Kilmarnock.
The new units became the Class 143s, and while clearly of the same family as the BRE-Leyland products, they were distinctly different, especially in terms of aesthetics. Like the Workington-built units the Class 143’s aluminium bodies were constructed using existing road bus panels, this time from Alexander’s P-type. A more rounded cab front was fitted, but again employing a three-window windscreen, with destination box in the centre window.
Each car measured 51ft 0½in, the same as the Class 142, but were slightly narrower at 8ft 10½in, compared to the 9ft 2¼in of the ‘142s’.
They were split into Driving Motor Standard (DMS Nos. 55642-55666) and Driving Motor Standard Lavatory (DMSL Nos. 55667-55691) configurations, with seating for 62 in the DMS and 60 in the DMSL on 3+2 seat bus-type seats. Passenger access was via three sets of twin-leaf doors on each side of a two-car set.
As built, they were numbered 143001 to 143025, but these would change in due course with subsequent refurbishments and modifications. Like the BRE-Leyland units they drew their power from a Leyland ‘TL11’ 205hp engine beneath each car, and featured mechanical Self Changing Gear (SCG) transmission, giving
