AJS Model 20 500 1956 - Specifications & Review

Model 20 500

Article Complete Info

Articleid955569
CategoryAllround
MakeAJS
ModelModel 20 500
Year1956

Chassis, Suspension, Brakes & Wheels

FrametypeSingle cradle
FrontbrakesExpanding brake (drum brake)
FrontsuspensionTelescopic
Fronttyre3.25-19
RearbrakesExpanding brake (drum brake)
RearsuspensionTwin shock
Reartyre3.25-19
SeatDual
WheelsSpoked

Engine & Transmission

Borexstroke66.0 x 72.8 mm (2.6 x 2.9 inches)
ClutchWet multiplate
Compression7.0:1
CoolingsystemAir
Displacement498.00 ccm (30.39 cubic inches)
EnginedetailsTwin, four-stroke
FuelsystemCarburettor
Gearbox4-speed
IgnitionMagneto
Power20.00 HP (14.6 kW)) @ 6800 RPM
Topspeed137.0 km/h (85.1 mph)
TransmissiontypefinaldriveChain

Other Specifications

StarterKick

Physical Measures & Capacities

Dryweight178.0 kg (392.4 pounds)
Fuelcapacity13.50 litres (3.57 gallons)
Powerweightratio0.1124 HP/kg

About AJS Model 20 500 1956

Introducing the 1956 AJS Model 20 500—a classic motorcycle that embodies the spirit of mid-20th century British engineering. Designed for the discerning rider, this all-rounder combines style, comfort, and reliable performance, making it a popular choice among enthusiasts seeking a vintage experience. With its rich heritage and timeless aesthetics, the Model 20 500 stands out not only for its historical significance but also for its ability to deliver an engaging ride, whether you're cruising through town or embarking on longer journeys.

At the heart of the AJS Model 20 500 is its robust 498cc twin-cylinder engine, delivering a respectable 20 HP at 6800 RPM. This four-stroke powerhouse, with a compression ratio of 7.0:1, offers a delightful balance of power and efficiency. Riders can expect a top speed of approximately 137 km/h (85.1 mph), making it a competent performer on the road. The air-cooled engine is paired with a smooth 4-speed gearbox, allowing for seamless gear changes and a satisfying riding experience. With its chain final drive and wet multiplate clutch, the Model 20 500 provides a reliable and predictable ride, instilling confidence whether navigating city streets or tackling winding country roads.

The AJS Model 20 500 features a single cradle frame that promotes stability and comfort, while the telescopic front suspension and twin shock rear suspension ensure a smooth ride over varied terrains. The expanding drum brakes front and rear provide sufficient stopping power, embodying the simplicity and effectiveness of classic motorcycle design. With a weight of 178 kg (392.4 pounds) and a fuel capacity of 13.5 liters (3.57 gallons), this model strikes an appealing balance between agility and endurance, making it a practical choice for both short jaunts and longer excursions. The kick starter adds an element of nostalgia, reminding riders of the hands-on approach that defines this era of motorcycling.

PROs:

  1. Classic Design: The vintage aesthetics and craftsmanship make the AJS Model 20 500 a head-turner at any gathering.
  2. Reliable Performance: The well-engineered engine and gearbox provide a dependable riding experience, perfect for both new and seasoned riders.
  3. Comfortable Ride: The combination of a stable frame and effective suspension contributes to a smooth and enjoyable ride, ideal for longer journeys.

CONs:

  1. Limited Power: While adequate for leisurely rides, the 20 HP engine may feel underwhelming for those seeking high-speed thrills.
  2. Drum Brakes: The expanding drum brakes, while reliable for their time, may not provide the stopping power expected by modern standards.
  3. Kick Start Only: The absence of an electric start can be a drawback for some riders, especially in less-than-ideal conditions.

In summary, the 1956 AJS Model 20 500 is not just a motorcycle; it’s a piece of history, offering a unique blend of nostalgia and performance that continues to captivate motorcycle enthusiasts to this day.

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