Engine: Single cylinder four-stroke OHV
Bore & stroke: 60 x 61 mm
Compression ratio: 7.0:1
Engine Capacity: 172.4cc
Maximum power: 9 h.p. @ 6,500 rpm
Cylinder: Cast in special iron, cylinder head in aluminum, fitted with withdrawable valve seats and guides
Valves: OHV (Single shaft operating overhead valves which are offset from the vertical. Valve operating through two pairs of 'Gleason' helical cut bevel gears
Valves per cylinder: 2
Ignition type: Automatic advance dynamo coil - 45 Watt, 6 Volt
Cooling system: Air cooled (Auto-Lite)
Lubrication: Forced lubrication of crankshaft and rocker system from a mechanical gear pump
Transmission: Primary transmission through helical cut shaved gearing, chain final
Clutch: Cable operated with multiple wet disc in oil bath
Gearbox: 4-Speed foot-change
Throttle: Cable operated
Frame type: Open cradle tubular and pressed steel
Suspension: Telescopic front fork with hydraulic damping
Rear Suspension: Dual Hydraulic shock absorbers
Front Brake: Drum, hand operated
Rear Brake: Drum, pedal operated
Front tyre: 2.75 x 19 in.
Rear tyre: 2.75 x 19 in.
Seat: Duck tail race seat
Fuel tank capacity: approx. 19 litres
Source: Hessink's NL
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