FROM UPMINSTER TO UPCYCLED: Vivarail’s D-Train
SOMEWHERE deep in rural Warwickshire, a former London Underground ‘D Stock’ driving car stands on arailway siding. Surrounded by dozens of its sisters, mothballed Midland Metro tramcars, ex-Thameslink Class 319s, and redundant freight wagons, it’s not much to look at. Then suddenly – silently –it sets off, accelerating quickly and cantering around the test track with no more than adistant electrical whine. No, it’s not a runaway, but Vivarail’s battery powered D-Train demonstrator – one of several options the company is now developing to power its upcycled trains.
Inside, a bank of batteries obtained from the Bombardier/Network Rail Independently Powered Electric Multiple Unit (IPEMU) project provides power for the traction motors and enough charge for up to 80 hours of operation. It’s unlikely this could be replicated in the harsher realities of main line operation, but computer simulations predict it would be sufficient for a full-day diagram on a branch line such as Maidenhead to Marlow.
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