Ariel NH 350 Red Hunter - Specifications & Review

NH 350 Red Hunter

Article Complete Info

Articleid98411
CategoryAllround
MakeAriel
ModelNH 350 Red Hunter
Year1959

Chassis, Suspension, Brakes & Wheels

FrametypeSemi-double cradle
FrontbrakesExpanding brake (drum brake)
Frontbrakesdiameter178 mm (7.0 inches)
FrontsuspensionTelescopic fork
Fronttyre3.25-19
RearbrakesExpanding brake (drum brake)
Rearbrakesdiameter178 mm (7.0 inches)
RearsuspensionPlungers
Reartyre3.25-19
SeatDual seat
WheelsWire spoked. Dunlop tyres.

Engine & Transmission

Borexstroke72.0 x 85.0 mm (2.8 x 3.3 inches)
ClutchDry, multiplate
Compression7.0:1
CoolingsystemAir
Displacement346.00 ccm (21.11 cubic inches)
EnginedetailsSingle cylinder, four-stroke
Exhaustsystem1-into-1 pipes
Fuelconsumption2.69 litres/100 km (37.2 km/l or 87.44 mpg)
FuelsystemCarburettor. Amal monoblock carburettor
Gearbox4-speed
Greenhousegases62.4 CO2 g/km. (CO2 - Carbon dioxide emission)
IgnitionLucas manual ignition control
LubricationsystemDual oil pumps
Power19.00 HP (13.9 kW)) @ 5600 RPM
Topspeed124.7 km/h (77.5 mph)
TransmissiontypefinaldriveChain

Other Specifications

ColoroptionsDark red
Electrical6V system.
Light7.5 inch headlamp
StarterKick

Physical Measures & Capacities

Dryweight160.0 kg (352.7 pounds)
Fuelcapacity17.03 litres (4.50 gallons)
Groundclearance140 mm (5.5 inches)
Oilcapacity3.40 litres (0.22 quarts)
Overalllength2,180 mm (85.8 inches)
Overallwidth640 mm (25.2 inches)
Powerweightratio0.1188 HP/kg
Seatheight787 mm (31.0 inches) If adjustable, lowest setting.

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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