GRAND PRIX RANGE
(NON UNIT)
250 c.c. O.H.V. 350 c.c. O.H.V.
MODEL 50 MODEL 60
ENGINE.
Model 50. 246 c.c., bore 62½ mm., stroke 80 mm. Model 60. 346 c.c., bore 70 mm., stroke 90 mm. O.H.V, single port. Lubrication by dry sump system. 6 pints of oil are carried in tank, remote from engine. The oil is delivered under pressure to the timing gear, big end bearing, and overhead rocker spindles. A a lead is also taken to the thrust side of the piston, remainder of the reciprocating and rotating parts are fed by splash and the oil is returned by pump from the engine sump to tank. The crankshaft is mounted on three large bearings, rigidly mounted in the crankcase. The connecting rod is carried on double row roller bearings of ample proportions,
TRANSMISSION*
½" x .305 chain in cast aluminium oil bath cafe to 4-speed all-enclosed gear box. with foot change and folding kickstarter, and by 5/8" x 1/4" chain to rear wheel. Engine shaft shock absorber is provided.
FRAME.
Tubular cradle type of very pleasing appearance giving low centre of gravity.
FORKS.
Light tubular construction with easily adjustable rebound dampers and steering dampers.
WHEELS.
Model 5O. 19" x 2½ rim. 26" x 3.25 tyre, Rear. 20" x 2½" rim. 26" x 3" tyre Front.
Model 60. 19* x 3" rim, 26" x 3.50" tyre. Rear. 20" x 2½" rim 26" x 3" tyre Front.
BRAKES.
Powerful internal expanding type, 7" diameter.
TANK.
Very pleasing contour, finished in chromium and blue. Capacity 2¾ gallons.
EQUIPMENT,
Includes "Amal" carburetter, flexible top saddle, toolbox and kit, pump, licence holder, spnng-up rear stand.
IGNITION AND LIGHTING.
Lucas 6-volt Magdyno set, voltage control, parking and dipping devices, and H.F. horn.
FINISH.
Black enamel, 3 coats on frame, wheels, etc. Usual fittings chromium plated.
PRICES COMPLETE
(Illuminated Trip Speedometer £2 10s. extra,)
