3½ h.p. Water-cooled Model

Engine - Single cylinder water-cooled with large jackets surrounding bore, valves and head; 3 1/2 h.p.; bore
and stroke 84 x 90 m/m ; cylinder desaxé : ball bearings to main shaft; mechanically operated valves;
half compression device for easy starting; large silencer with tail tube.

Radiator - Honeycomb; very strong and light; water capacity 3 quarts, giving ample cooling; fitted with concealed escape pipe.

Starting Device - Kick starter on chain stays.

Carburetter - Brown & Barlow ; operated by Bowden wires from handlebar.

Ignition -    - High tension magneto; gear driven; placed behind engine; controlled from handlebar.

Transmission - Dunlop 1 in. rubber belt, V shape; on variable pulley, giving gems ranging from 4:1 to 0 ; 1 on top gear.

Three-Speed Gear and Free Engine - Sturmey-Archer; operated by lever on top tube; clutch operated by foot pedal.

Tank - Made in two compartments; petrol capacity 1½ gallons; oil capacity 1 quart; fitted with petrol gauge and drip feed lubricator to engine (Best and Lloyd type) and extra large fillers.

Frame - Strong design; dropped top rail; low position (saddle 28 in. from ground); fitted with foot-boards and specially designed spring forks.

Wheels & Tyres - 26 in. x 2½ in. Dunlop extra heavy rubber studded tyres, with beaded edges

Mudguards - Detachable; front guard has side extensions for its whole length; back guard hinges up to facilitate tyre repair; belt guard also fitted.

Brakes - Front rim brake and powerful internal V back rim brake, operated by foot pedal.

Control - All Bowden wires neatly enclosed in handlebar.

Saddle - Lycett No. 4 Pan seat or Brooks B 170

Carrier - Of strong steel tube.

Stands - To front and back wheels; rear stand is hinged on fork ends separate from hub spindle ; the latter can be removed with stand in position.

Tool Bags - Fitted each side carrier, with complete kit of tools

Number Plates - Enamelled ready for registration letters and numbers.

Finish - Enamelled black on coslettised frame, lined green and gold; tank finished with large aluminium panels and lined to match frame.

Adapted from a catalogue available at Barnstormers NZ

Humber Motorcycles 1909-1919