AJS Model 20 500 1953 - Specifications & Review

Model 20 500

Article Complete Info

Articleid26787
CategoryAllround
MakeAJS
ModelModel 20 500
Year1953

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)
Overallheight1,050 mm (41.3 inches)
Overalllength2,190 mm (86.2 inches)
Overallwidth710 mm (28.0 inches)
Powerweightratio0.1124 HP/kg

About AJS Model 20 500 1953

Introducing the 1953 AJS Model 20 500: A Classic Allrounder

The 1953 AJS Model 20 500 stands as a testament to British engineering during the golden age of motorcycling. Launched in the early 50s, this model perfectly embodies the spirit of adventure and practicality, making it a beloved choice among riders who sought a versatile motorcycle capable of both city commuting and rural exploration. With its classic styling and robust construction, the Model 20 500 is a charming piece of history that continues to captivate enthusiasts and collectors alike.

Engine Performance and Riding Characteristics

At the heart of the Model 20 500 lies a spirited 498cc twin-cylinder, four-stroke engine that delivers a respectable 20 horsepower at 6,800 RPM. This powerplant strikes a fine balance between performance and reliability, allowing the bike to achieve a top speed of 137 km/h (85 mph)—a remarkable feat for its era. The engine’s compression ratio of 7.0:1, combined with a traditional carburettor and magneto ignition, ensures smooth operation and a responsive throttle. Riders will appreciate the seamless shifting provided by the four-speed gearbox, while the wet multiplate clutch offers smooth engagement, making it an absolute pleasure to ride. The Model 20 500’s lightweight chassis (weighing in at just 178 kg/392.4 lbs) enhances its agility, allowing for nimble handling in both urban environments and winding country roads.

Key Features and Technology

The AJS Model 20 500 is not just a pretty face; it’s equipped with several features that enhance the riding experience. The single cradle frame provides a strong and stable foundation, while the telescopic front suspension and twin shock rear suspension work in harmony to absorb bumps and improve comfort. The expanding drum brakes at both ends deliver reliable stopping power, ensuring safety in various riding conditions. With a fuel capacity of 13.5 liters (3.57 gallons), the motorcycle is designed for longer journeys, allowing riders to explore with fewer interruptions. Classic enthusiasts will appreciate the kick starter, a nod to the traditional motorcycles of the past, which adds an element of nostalgia to the riding experience.

Pros and Cons

As with any classic motorcycle, the AJS Model 20 500 has its strengths and weaknesses. Here are a few to consider:

Pros:

  1. Timeless Design: The vintage aesthetic of the AJS Model 20 500 is sure to turn heads and spark nostalgia among fellow riders and enthusiasts.
  2. Reliable Performance: With a robust engine and simple mechanics, the Model 20 is known for its reliability, making it a great choice for both new and experienced riders.
  3. Agility and Comfort: The lightweight design and effective suspension provide an enjoyable ride, whether navigating city streets or cruising along scenic routes.

Cons:

  1. Limited Power: While the 20 HP is sufficient for leisurely rides, it may not satisfy those seeking high-performance thrills.
  2. Drum Brakes: The expanding drum brakes, while reliable for their time, may not offer the stopping power or responsiveness of modern disc brakes.
  3. Kick Start Only: In an age of electric starts, the kick starter can be a challenge for some riders, especially those not familiar with the technique.

In summary, the 1953 AJS Model 20 500 is a delightful blend of heritage, practicality, and charm. For those looking to add a piece of motorcycling history to their collection or simply seeking a reliable companion for leisurely rides, this classic allrounder certainly deserves a spot in any enthusiast's heart.

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