BR/Brecknell-Willis MK.III pantograph tests Euston-Carlisle July/Aug 1979 (TM-ETR-124)

The BR/Brecknell-Willis Mk.III Pantograph was first tested on the main line in December 1978, between Euston and Preston. It performed well when running with the knuckle leading, but there were aerodynamic difficulties in the knuckle trailing direction. Modifications have since been made to the pantograph to improve its aerodynamics, and...