Impressionnante.
Quelques détails,specifications: 4 stroke 50 degrees V4, liquid cooled,
494 cc (50 x 63 mm), 55 HP at 7200 rpm, 2 x SOHC with chain drive,
ignition by twin magnetos, fuel supply with Zoller supercharger,
primary and secondary chain drive, 4 gears, drum brakes, maximum speed
over 160 km/h.