"11.50 Special" Specification
|This machine is specially built for the "tough guys" of the motor-cycling
game, and for overseas riders requirements the " 11.50 Special " can be
obtained in Colonial form with long rear-swept handlebars, twist-grip controls,
foot-boards, foot-clutch if necessary, and foot-change. This machine
is extensively used by Police Constabularies in all parts of the World.
Engine. 60o "V" Twin, 85
x 99, exceptionally large bearings throughout ; pistons of a special
alloy, detachable cylinder heads which are highly polished, including the
ports. Full dry-sump lubrication is incorporated to all moving parts,
lubricated by oil under pressure, including valves, tappets and guides.
This engine can be decarbonised quite easily
|Gearbox. This component is pivotal
mounted and has four speeds (three close ratios with a low bottom), and
positive foot change. The kick-starter pedal is extra long to ensure
easy staring in exceptionally cold weather. Gear ratios are 4.2,
4.83, 6.13 and 10.5.
Tank. This is the world-renowned and much-copied original bulbous-nosed saddle tank, heavily chromium-plated with a black top panel edged with a fine gold-leaf line. It holds four gallons of petrol, and is fitted with two large filler caps, easy in operation and conveniently placed for refilling; two level petrol taps, and very comfortable and conveniently placed knee-grips. The oil tank is separate and is fitted behind the saddle tube and holds six pints of oil.
Handlebars. The standard bar gives a very comfortable and natural riding position, and is appreciated for long-distance touring. It is set up slightly from the lug, but is not of the "sit-up-and-beg" type. A sports handlebar, as illustrated, can be fitted to order.
Chain Cases. A very strong cast aluminium oil-bath chain case is used for the primary chain, and the top and bottom runs of the rear chain are effectively covered. Chains employed are 1/2in. x .305in. front, and 5/8in. x 3/8in. rear -- double-strength Renold.
Wheels and Brakes. Wheels are fitted with 7 gauge butted spokes throughout, journal ball-bearings, and very effective 8in. Brakes, coupled with instantaneous brake adjustment, 27 x 4.00 rear tyre, and 26 x 3.50 front tyre. Dunlop "Fort" tyres are standard.
Saddle. A really comfortable 18in. wide pan seat, giving armchair comfort, is fitted as standard.
General. Very effective and strong mudguards are fitted as standard; mudguard stays, lamp brackets, cable tube carrier, are all made of strong round section tubing. Lodge Plugs. Saddle height, 26in. Ground clearance, 5 1/2in. Wheel Base, 57in. Petrol consumption, 65 m.p.g. solo and 50 m.p.g. sidecar. The machine is capable of 80-85 m.p.h. solo, and 65-70 m.p.h. with large touring sidecar.
The machine chosen by the Australian and Canadian Mounted Police
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