Technical specifications
|
| Model: |
Speed Twin 500 |
| Years: |
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
|