1951 AJS Model 20 500

AJS Model 20 500 1951


1951 AJS Model 20 500 specifications, pictures, reviews and rating

General information
Model AJS Model 20 500
Year model 1951
Type Allround
Rating 2.8  Check out the detailed rating of reliability, maintenance costs, value for money, etc. Compare with any other motorcycle.
Engine and transmission
Engine size 498.0 ccm (30.39 cubic inches)
Type of engine Twin, four-stroke
Effect 20.0 HP (14.6 kW)) @ 6800 RPM
Top speed 137.0 km/h (85.1 mph)
Compression 7.0:1
Bore x stroke 66.0 x 72.8 mm (2.6 x 2.9 inches)
Fuel system Carburettor
Ignition Magneto
Cooling system Air
Gearbox 4-speed
Transmission type Chain (final drive)
Clutch Wet multiplate
Chassis, suspension, brakes and wheels
Frame type Single cradle
Front suspension Telescopic
Rear suspension Twin shock
Front tire 3.25-19
Rear tire 3.25-19
Front brakes Expanding brake (drum brake)
Rear brakes Expanding brake (drum brake)
Wheels Spoked
Seat Dual
Physical measures and capacities
Dry weight 178.0 kg (392.4 pounds)
Power/weight ratio 0.1124 HP/kg
Overall height 1050 mm (41.3 inches)
Overall length 2190 mm (86.2 inches)
Overall width 710 mm (28.0 inches)
Fuel capacity 13.50 litres (3.57 US gallons)
Other specifications
Starter Kick
Update specsReport missing specs or required updates.
Further information
MaintenanceFind parts, fluids. filters, maintenance tools and service manuals at Amazon.com.
Ask questionsJoin the 51 AJS Model 20 500 discussion group or the general AJS discussion group.
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