OK-Supreme Motorcycles

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OK Supreme Britannia Model LB/34 & LE/34

ENGINE 497 cc O.H.V. Bore 85.7mm. stroke 85mm. Dry sump with single port head of new design with positive lubrication to valve guides, rockers, and primary chain. We test on and urge the use of CASTROL XL.

FRAME The 1934 frame has been improved to take the added strain of this improved engine unit, and the engine plates are enlarged. It Is built throughout of A. & P. highest grade tubes. Sidecar lugs are embodied. Sturdy front stand fitted, spring up rear stand.

FORKS Webb heavy type girder with spring-loaded shock absorbers and steering damper.

GEARBOX 4-speed Burman with hand control, foot control optional. Ratios, 4.86, 6.13, 8.22 & 13.00. The foot control is of the built-in type. The box is slung and held by two stout bolts. Provided with simple and accessible adjustment. Use CASTRO LEASE for sweet gear changing.

BRAKES & HUBS Drop forged drums fitted with rubber shock absorbers In rear hub. Wide linings. Rain and mud excluders and finger adjustment.

TYRES 26 x 3.25. Dunlop heavy on Dunlop chrome-plated rims, lined carmine.

MUDGUARDS Car type, deep dome with central strengthening rib, hinged rear. Beaded edges to guards and number plates.

TANKS Both of welded steel. Petrol 2 gallons 6 pints. Chrome finish with two level push-on tap giving reserve supply. Oil tank ½ gallon. Oversize knee grips.

LIGHTING Lucas Magdyno, 6 volt, with the new large double filament head lamp and stop light at rear. brake controlled. Larger rubber suspended battery in universal carrier (Patent No. 21454/33), which allows for swinging out or quick detachment for topping up, etc. Every cable armoured.

HANDLEBARS & CONTROLS Amal, clean. with a controls get-at-able. Twist grip. Bar adjustable as to height and angle.

CHAINS By Coventry. Front chain entirely enclosed. automatically lubricated.

SADDLE Large 3-point suspension, soft top.

CARRIER & FOOTRESTS detachable top with two large metal tool containers with complete set of Abingdon tools ; Bluemel pump. Foot rests drop forged, adjustable, fitted with honeycombed soft rubber rests.

DETAILS The whole frame and all metal parts treated with anti-rust. Finished off with best black enamel. The petrol tank is chromium, coloured out and lined gold.

Upswept pipe no extra, but battery will not swing out in this'case.
Short travel foot-change.
Totally enclosed sturdy frame.
Engine bolts and plates increased in strength.
Footrest position improved.
Double filament bulb in head lamp.

For overall length, wheelbase, extras, etc., see N/34 " HOOD."

Source: ok-supreme-muv archive