Triumph Motorcycles

Triumph Speed Twin 1954

Triumph Speed Twin

The famous 500 c.c. "Speed Twin," forerunner of all today's vertical twins, is silent, smooth and fast and offers all the performance required under normal circumstances. It has established a wonderful reputation with experienced riders in all parts of the world.


ENGINES. O.H.V. vertical twin cylinder with two gear-driven camshafts. "H" section RR56 alloy connecting rods with patented plain big ends. Central flywheel. Dry sump lubrication, plunger type pumps, pressure fed big ends and valve gear. Timing cover highly polished and fitted with oil pressure indicator. Patent air cleaner. New and most efficient barrel type silencers.

FOUR SPEED GEARBOX. Triumph design and manufacture. Positive stop footchange. Shafts and gears of finest nickel and nickel- chrome steel. Large diameter multi-plate clutch with rubber pad type shock absorber. Polished aluminium primary chaincase.

FUEL TANKS. All-steel welded tanks with quick release caps and accessible fillers.

FRAMES. Brazed full cradle type with lugs for sidecar attachment either side. Front and rear stands.

SUSPENSION. Triumph design telescopic forks with hydraulic damping. Famous Spring Wheel rear suspension (extra).

BRAKES. Exceptionally powerful, with large diameter cast-iron drums. Finger adjusted. Controls adjustable for position.

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