Designed by Matt Wright, the DOHC blown V4 was showing considerable potential despite its considerable weight and ongoing cooling problems. In 1939 it broke - smashed rather - the lap record at the Ulster GP with the first 100mph lap of the circuit before retiring with suspension problems. The bike reappeared briefly after hostilities ceased, but then new rules disallowed supercharged models.
Specifications
Engine: Water-cooled 500cc 50x63mm DOHC V4 with Zoller supercharger Power: 55hp at 7200rpm Transmission: 4-speed gearbox; chain final drive Suspension: Girder forks and plunger rear suspension Brakes Drum front & rear Weight 405 lb
