Frame

Numbered 55701 to 58075 (approx). Bolt on seat stays with drawback type chainstays for rear wheel adjustment.

Wheels

WM2x19 (f), WM2x19 (r). with identical hubs and black enamelled rims. Black spokes with NPB nipples.

Mudguards

Plain inverted U section, unvalanced. Rear with detachable main section.

Tanks

Petrol tank painted with gold lined Maroon panels with Enots reserve tap. Single central CEE-ESS type filler with front fitted petrol balance pipe. Two bolt damper arm fixing.

Engine

Numbered A1 to A600 (approx) - 2 valve 245cc with cast iron open valve cylinder head, bolted to the barrel from below. 14mm side plug. Rear mounted Lucas 30W Maglita ignition/dynamo. Oil feed to rear of cylinder. Cast alloy plain rocker cover.

Brakes

Both 6 3/4”, coupled with aluminium shoes.

Electrics

Lucas DU142 8” headlamp, CZ23 8-0-8 ammeter, rear lamp and electric horn.

Transmission

4 speed gearbox with hand change on RHS of tank. Aluminium oil bath chaincase with ‘R’ on dome and separate filler on shock absorber dome.

Carburetter

Horizontal Amal type 75/151 with straight pull Amal control. Fitted with flame arrester.

Exhaust system

Single 1 3/4” low level pipe into Rudge ‘can’ type silencer and 6” fishtail.

Standard Fittings

Mechanism shield, no battery cover,1” handlebars, licence holder and rear carrier. Two toolboxes fitted to either side of machine. Steering damper and handwheel operated fork shock absorber. Open ended ‘D’ section forks. Pressed steel central stand. THAPEX tyre inflator. Cover to front engine plates.

Extras

Trip chronometric 80mph speedometer, pillion footrests and foot change. Chrome plated rims.

©  Colin Chapple