ENGINE: "F. B. Minarelli" two-
stroke single. Bore: 38 mm. x
stroke: 42 mm. Iron cylinder, alloy
head. "Dell 'Orto" carburettor with
air cleaner. Enclosed flywheel
magneto with 18-watt lighting coils.
TRANSMISSION: Helical gear pri-
mary drive to 3-speed gearbox with
twistgrip change. Ratios: 11.65,
17.66 and 31.45 to 1. Multi-plate
cork insert clutch in oil. Final
drive: "Perry" chain with top run guard.
FRAME: "Cimmatti" box-section
welded steel pressings with integral
rear mudguard and built-in tool
compartment. Telescopic front
forks, swinging arm rear with
semi-pneumatic damping. Fuel
tank capacity: 2 1/4 gallons.
WHEELS: 20-inch chromed rims on
light alloy ribbed hubs with full-
width hub brakes. "Michelin" or
"Dunlop" 2-inch tyres, ribbed
front, patterned rear.
ELECTRICS: 15/15-watt headlamp
with handlebar switch, electric
horn, illuminated speedometer in
WEIGHT: 110 lbs.
PRICE: £91 13s. 6d. (Including P.T.)
MAKERS: J. O. Ball, Pilford Heath.