Ariel W-NG 350 - Specifications & Review

W-NG 350

Article Complete Info

Articleid227329
CategoryAllround
MakeAriel
ModelW-NG 350
Year1944

Chassis, Suspension, Brakes & Wheels

FrontbrakesExpanding brake (drum brake)
FrontsuspensionGrider fork
Fronttyre3.25-19
RearbrakesExpanding brake (drum brake)
RearsuspensionRigid
Reartyre3.25-19
SeatSpring loaded solo seat
WheelsWire spoked

Engine & Transmission

Borexstroke72.0 x 85.0 mm (2.8 x 3.3 inches)
CoolingsystemAir
Displacement346.00 ccm (21.11 cubic inches)
DrivelineBurman gear-box
EnginedetailsSingle cylinder, four-stroke
Exhaustsystem1-into-1 pipes
FuelsystemCarburettor
Gearbox4-speed
IgnitionCoil
LubricationsystemDry sump
Power17.03 HP (12.4 kW)) @ 5800 RPM
TransmissiontypefinaldriveChain
Valvespercylinder2

Other Specifications

CarryingcapacityRear rack
ColoroptionsMilitary green, Black
CommentsBased on the Ariel Red Hunter for the British military. Sidecar option.
Electrical6V battery.
StarterKick

Physical Measures & Capacities

Dryweight169.0 kg (372.6 pounds)
Fuelcapacity12.00 litres (3.17 gallons)
Oilcapacity2.30 litres (0.15 quarts)
Overalllength2,130 mm (83.9 inches)
Powerweightratio0.1008 HP/kg

About Ariel

Country of Origin: United Kingdom
Founder: James Starley & William Hillman (bicycles); later Ariel Motorcycles under Charles Sangster
Best Known For: Square Four tourers, Red Hunter singles, and innovative early designs

Company History

Ariel is among Britain’s most storied names, moving from bicycles to motorcycles in the brass era and innovating through several epochs. The Red Hunter singles set a standard for sporting roadsters, while Edward Turner’s Square Four delivered creamy long-distance power from a compact four-cylinder layout. Postwar Ariels carried commuters and enthusiasts alike, with alloy cylinders and tidy frames that showcased the firm’s engineering finesse. The two-stroke Leader/Arrow of the late 1950s pushed modernity—enclosed bodywork, pressed steel, unit construction—foreshadowing scooters and lightweight commuters. Industry headwinds and consolidation into BSA/Triumph eventually ended motorcycle production in the late 1960s. In the 21st century, the Ariel name returned on radical lightweight cars and a boutique V-4 motorcycle prototype, channeling the brand’s historic appetite for bold design. Historically, Ariel symbolizes British ingenuity: elegant solutions to packaging and power delivery, a willingness to try new materials and layouts, and an understanding that motorcycles could be both fast and refined. A well-sorted Square Four remains a bucket-list ride—silky midrange, dignified pace, and the sense of traveling with civilized authority.

Other Years

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