Twice Around London – Without Recharging

Dean Sigler Electric Powerplants Leave a Comment

On May 27, Imperial College students driving their electric race car around the M25 orbital road that cirles London looked more like ninja thieves (because of headgear that protected them from early morning breezes) headed toward a convenience store than serious test drivers, but their mission was far more benign than their appearance. http://www.youtube.com/watch?v=-MkZlb29ge8 Their mount, a white and green two-seater that looks more destined for LeMans fame than for ecological breakthroughs, was the RGE (Racing Green Endurance) based on a Radical Sportscars SR8 chassis. Its power comes from two Evo-Electric motors each with a motor controller, propelled by a Thunder Sky 56 kWh battery pack and monitored by a National Instruments CompactRio unit which combines management of the motor control function, battery management system, and driver interface. RGE is capable of 200 kilometers per hour top speed (124 mph) and 400 kilometers (268 miles) range. The motors are light weight “pancake” type units with a power density of 4.2 kilowatts …