Ariel KH 500 Fieldmaster
1956Allround

Ariel KH 500 Fieldmaster

Key specifications

Engine
498 cc
Power
28 HP
Weight
177 kg
Fuel type
petrol
Fuel capacity
4.5 L
Transmission
4-speed
Seat height
31 mm
Front brakes
Expanding brake (drum brake)
Rear brakes
Expanding brake (drum brake)

Overview

Introducing the 1956 Ariel KH 500 Fieldmaster, a quintessential representation of British engineering that perfectly balances style, performance, and versatility. Positioned in the allround motorcycle market, the KH 500 Fieldmaster was designed for riders who craved both commuting efficiency and the thrill of weekend escapades. With its classic lines and a striking red finish, this motorcycle is not just a mode of transport; it's a statement piece that evokes nostalgia for the golden age of motorcycling. As a product of Ariel, a brand with a rich heritage dating back to the late 19th century and later acquired by BSA in 1944, the KH 500 embodies the spirit of adventure and ruggedness that characterized the era. At the heart of the KH 500 Fieldmaster lies a robust 498cc twin-cylinder, four-stroke engine, delivering a solid 28.03 horsepower at 6500 RPM. This power translates into a top speed of 145 km/h (90.1 mph), making it a capable contender on both city streets and winding country roads. With a compression ratio of 6.8:1 and a well-tuned carburettor, the engine offers smooth acceleration and a satisfying torque curve. Riders will appreciate the four-speed gearbox, which, combined with a dry plate clutch and chain final drive, provides precise control over power delivery. The impressive fuel consumption of just 3.04 liters per 100 kilometers (77.38 mpg) ensures that adventures are not cut short by frequent stops at the pump. The KH 500 Fieldmaster is equipped with features that reflect its era while embracing practicality for the modern rider. Its duplex loop frame not only adds strength but also provides stability and confidence during rides. The telescopic front forks offer a cushioned ride over uneven terrain, while the rigid rear suspension is reminiscent of classic motorcycles, giving a sense of authenticity and connection with the road. Stopping power comes from reliable drum brakes at both the front and rear, further enhancing the bike's vintage charm. With a seat height of 787 mm (31 inches) and a ground clearance of 140 mm (5.5 inches), this motorcycle is accessible to a wide range of riders, making it a versatile choice for enthusiasts. **

Pros

  • Timeless Design: The striking red finish and classic lines make the KH 500 Fieldmaster a head-turner, blending nostalgia with elegance.
  • Fuel Efficiency: With an impressive fuel consumption rate of 3.04 liters per 100 km, this motorcycle offers long-distance capabilities without frequent refueling.
  • Balanced Performance: The twin-cylinder engine provides a satisfying blend of power and torque, making it ideal for both urban commuting and spirited rides on open roads.

Cons

  • Weight: At 177 kg (390 lbs), the KH 500 may feel heavy for some riders, especially when maneuvering in tight spaces or during low-speed turns.
  • Rigid Rear Suspension: While it enhances the classic aesthetic, the rigid rear suspension may not provide the same level of comfort as modern bikes with advanced suspension systems, particularly on bumpy roads.
  • Limited Technology: As a vintage motorcycle, the KH 500 lacks contemporary features such as electronic ignition or advanced braking systems, which may deter some modern riders accustomed to high-tech conveniences.

Technical details

Source specification data

Make
Ariel
Model
KH 500 Fieldmaster
Category
Allround
Starter
Kick
Comments
Ariel was bought by BSA in 1944.
Color Options
Red
Power
28.03 HP (20.5 kW)) @ 6500 RPM
Clutch
dry plate
Gearbox
4-speed
Ignition
Lucas
Top Speed
145.0 km/h (90.1 mph)
Fuel System
Carburettor
Bore X Stroke
56.0 x 86.0 mm (2.2 x 3.4 inches)
Compression
6.8:1
Displacement
498.00 ccm (30.39 cubic inches)
Cooling System
Air
Engine Details
Twin, four-stroke
Exhaust System
2-into-2 pipes
Fuel Consumption
3.04 litres/100 km (32.9 km/l or 77.38 mpg)
Greenhouse Gases
O2
g/km. (
O2
-
Carbon
dioxide emission)
Lubrication System
Dry sump
Transmission Type Final Drive
Chain
Dry Weight
177.0 kg (390.2 pounds)
Seat Height
787 mm (31.0 inches) If adjustable, lowest setting.
Oil Capacity
3.80 litres (0.25 quarts)
Fuel Capacity
17.00 litres (4.49 gallons)
Overall Width
686 mm (27.0 inches)
Overall Length
2,184 mm (86.0 inches)
Ground Clearance
140 mm (5.5 inches)
Power Weight Ratio
0.1584 HP/kg
Seat
Solo seat with springs
Wheels
Wire spoked. Dunlop tyres.
Rear Tyre
3.50-19
Frame Type
Duplex loop
Front Tyre
3.00-20
Rear Brakes
Expanding brake (drum brake)
Front Brakes
Expanding brake (drum brake)
Rear Suspension
Rigid
Front Suspension
Telescopic forks

Available colors

Red