Frame

Numbered 30940 to 36442 (approx). Bolt on seat stays with drawback type chainstays for rear wheel adjustment.

Wheels

WM2x19 (f), WM2x19 (r). interchangeable with black enamelled rims. Black spokes with NPB nipples. Bolt on sprocket.

Mudguards

6” D section, unvalanced, front and rear. Rear with detachable tail section.

Tanks

Petrol/oil tank black with gold lined panels. Twin screw type fillers with front fitted petrol balance pipe. Single bolt damper arm fixing. Brass lever petrol tap.

Engine

Numbered 52000 to 57000 (approx) - 4 valve 499cc with cast iron open valve cylinder head, parallel inlet valves and parallel exhaust. Splayed exhaust ports. Rockers mounted on plates bolted to the head. 18mm side plug. Forward mounted ML Maglita or round ML magneto. Square based cylinder barrel and plain drive side crankcase. Total loss oiling with vertical adjustable ‘pump’ in timing cover.

Brakes

8” front and rear, coupled with steel shoes.

Electrics (optional)

Miller 6” 64EA headlamp (with small ammeter retained by 3 screws), rear mounted switch and 34E rear lamp (where fitted).

Transmission

4 speed gearbox with hand change on RHS of tank. External kickstarter stop. Steel primary chain cover.

Carburetter

Amac type 15MDY with AMAC 2 lever or optional twist grip control.

Exhaust system

Twin 1 3/4” low-level downpipes into Rudge ‘can’ type silencers and 6” fishtails.

Standard Fittings

1” handlebars with folded type inverted levers and Rudge steering damper. Spanner adjusted fork shock absorber. Single toolbox fitted to nearside of machine opposite the battery carrier. Riveted angle & strip steel centre stand. Open ended ‘D’ section forks.

Extras

None listed.

©  Colin Chapple