Triumph Speed Twin (1947-58)

Make Model: Triumph Speed Twin 500


Year: 1947-58
Engine: Four stroke, parallel twin, OHV
Capacity: 498 cc / 30.4 cub in.
Bore x Stroke: 63 x 80 mm
Compression Ratio: 7.2:1
Cooling System: Air cooled
Induction: Single Amal carburetor 15/16″
Ignition: 6 V magnetic flywheel
Starting: Kick
Max Power: 20.9 kW / 28 hp @ 6000 rpm
Clutch: Wet,6 plate
Transmission: 4 Speed, constant mesh
Final Drive: Chain
Frame: Singe tube frame
Front Suspension: Hydraulic telescopic fork
Rear Suspension: 1947-1954 sprung hub, after 1954 Swingarm with two shock absorbers
Front Brakes: Drum, 7 in SLS
Rear Brakes: Drum, 7 in SLS
Front Tyre: 3.25 – 19, Dunlop Universal
Rear Tyre: 3.50 – 19, Dunlop Universal
Wheelbase: 1372 mm / 54 in

Saddle Height: 749 mm / 29.5 in
Ground Clearance: 152 mm / 6.0 in
Dry Weight: 182 kg / 401 lbs
Fuel Capacity: 18 L / 4.8 US gal / 4.0 Imp gal


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