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BSA A75 Rocket III

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Make Model

BSA Rocket III

Year

1970 -

Production

27 480 units

Engine

Four stroke, transverse, inline triple, OHV, 2 valve per cylinder

Capacity

740cc / 45.2 cub in.
Bore x Stroke 67 x 70mm
Carburetor 3 x Amal 26 mm concentric
Cooling System Air cooled
Compression Ratio 9.5:1
Lubrication Dry sump
Oil Capacity 2.8 L / 6 US pints
Exhaust 3-into-2, stainless steel

Ignition 

Twin coil
Spark Plug Champion N4

Battery

12V

Starting Kick start

Max Power

44 kW / 60 hp @ 7250 rpm

Max Torque

61 Nm / 6.2 kgf-m / 45 ft/lb @ 6900 rpm
Clutch Dry single plate

Transmission 

4 Speed
Final Drive Chain
Frame Double loop cradle frame

Front Suspension

Telescopic forks with coil spring - hydraulically damped

Rear Suspension

Coil spring/hydraulically damped

Front Brakes

Prior 1971: Drum

1972 - 75: Disc

Rear Brakes

Prior 1975: Drum

1975: Disc

Wheels Steel, wire spokes

Front Tyre

4.10 x 19 in., K81

Rear Tyre

4.10 x 19 in., K81
Wheelbase 1430 mm / 56.3in.
Ground Clearance 178 mm / 7.0 in.
Dry Weight 206 kg / 455 lbs
Wet Weight 226 kg / 498 lbs

Fuel Capacity 

19 L / 5.0 US gal

Top Speed 185 km/h / 115 mph

0 - 100 km/h - 0 - 60 mph

5.5 sec - 5.2 sec

Road Test

Cycle World
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Any corrections or more information on these motorcycles will be kindly appreciated.
 
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