TECHNICAL SPECIFICATION
ENGINE UNIT: Air cooled
two-stroke, single cylinder, with unit-construction two-stroke
gearbox.
BORE 4·00 m.m.
STROKE 39·5 m.m.
CUBIC CAPACITY 49 c.c.
COMPRESSION RATIO 6·8 to 1
HORSE POWER 2·1 b.h.p. at
6,000r.p.m.
CYLINDER: Chill cast aluminium
alloy, with cast-iron lining.
CYLINDER HEAD: Aluminium-alloy,
detachable. PISTONS: Aluminium-alloy, dome-topped, with anchored
Gudgeon pin.
BIG-END BEARING: Parallel
Roller-bearing type.
LITTLE_END BEARING: Phosphorous
Bronze bush type.
MAINSHAFT BEARINGS: Ball-bearing
type.
CLUTCH: Multi-disc, running in
oil-bath. OVERALL
GEAR REDUCTIONS: Bottom gear 22·6
to 1. Top gear-14·9 to 1.
PEDAL-DRIVE Built in to rear end
of gearbox, with Roller/Wedge freewheel mechanism, and back-pedaling
trip-action for rear brake operation. Pedal drive to rear wheel
through motor-in-chain.
SPARK PLUGS: 14 m.m.
IGNITION AND LIGHTNING: 3·2 m.m.
(1/8) in advance of top-dead-centre.
WHEELBASE: 44". LENGTH OVERALL:
70".
HEIGHT OVERALL: 37". TOTAL WEIGHT:
96 lbs.
FRAME: Tubular head, with
twin-tube "backbone".
FRONT FORK: Phillips No. 2
Telescopic spring fork, carried by ball-bearing steering-head.
HANDLEBAR: Wide-Raised adjustable
comfort pattern, mounted directly on Telescopic Fork by
two-point attachment.
BRAKES: Phillips Internal
Expanding, hand-operated front, foot operated gear.
TYRES: Dunlop 23"dia.x2·00"
section with Schrader-type valves.
MUDGUARDS: Deep-section pressed
steel, with pressed steel channel-section stays. Side valances
for front wheel and full-quarter sidepanels for rear wheel.
FUEL TANK: Large capacity, with
reserve-type tap.
SADDLE: Phillips P.21/3, large
spring seat. Adjustable for height.
EQUIPMENT: 3 1/3" Headlamp with
provision for speedometer. Tail lamp and horn. Also
tyre-inflator, bipod prop-stand, tool-kit, carrier, and blank
front and rear number-plates.
FINISH: Flamboyant Red Enamel,
with chromium plated fitments. |