WM1x21 (f), WM1x21 with plated rims. Bolt on rear sprocket.
Plain steel racing type. Rear with extra strip steel stay for support and tool box mounting.
Petrol tank black with double lined panel and 8 bolt fixing. Twin Coventry Movement quick release fillers with front fitted petrol balance pipe. Single breather. Single bolt damper arm fixing. Oval knee grips. Oil tank mounted on seat tube with twin Coventry Movement quick release fillers, one either side of machine.
4 valve 249cc with cast iron open valve TT pattern fully radial cylinder head, bolted to the barrel from below. Oil feed to rear of cylinder. 14mm central plug with oval inlet port. Rear mounted ML racing magneto driven at half engine speed. Webbed crankcases manufactured in RR50 alloy with cast platform for magneto mounting.
Front, 8” assembly from 500cc, and 350cc assembly on the rear. Operated from RHS of machine.
4 speed close ratio gearbox with rocking foot change on LHS of machine. Gearbox end cover thicker than standard with no kickstarter. Clutch chainwheel with 40 teeth.
Amal type 6/113 with castellated top nut and 11/32" bolt holes (same carb as the 1931 Works machines).
Twin 1 3/8” low level pipes into Rudge ‘can’ type silencers and 5” fishtails.
1” handlebars, pressed steel central stand, Bowden single cable handlebar controlled steering damper and leather fronted toolbox on nearside of machine. Frame with 1 1/4” front downtube. Open ended ‘D’ section forks (500cc pattern). Spanner adjustable fork shock absorber.
TT type exhaust pipes. LH brake and RH gearchange.
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