Alongside occasional design work recently, I have also been tasked with delivering and collecting some of the Crosville fleet in preparation for the 2017 season.
This has meant a lot of solo mileage but fortunately the destinations have been familiar, so not too stressful. The first of these movements, a few weeks ago, saw me taking one of the Crosville hybrid deckers up to the Yorkshire premises of Cobus, the bus restorers. Last week I took another of the Wrightbus hybrid buses up to Cobus and, the following day, brought the first one back to Weston-super-Mare as its conversion to open top had been completed.
As before, the journey was slow and tedious. Don’t get me wrong, the bus is dead easy to drive around town as it was originally used on the (mostly flat) streets of London. But put a gradient in front of it and, just like a tired donkey, it gets all moody and unresponsive. Normally, power comes from a Cummins diesel engine which charges the propulsion batteries but in Direct Energy mode (used for these long journeys) these batteries are switched out and the bus relies solely on the relatively small diesel engine. Propulsion still comes from the Siemens electric traction motor but it can only deliver the energy provided by the diesel engine. Which isn’t nearly enough on hills. Even on motorways, where gradients are usually gentle, our speed dropped away alarmingly. At times we were down to about 30mph!