1952 Norton Manx

1952 NORTON MANX BACKGROUND
The Norton Manx was developed in 1937, in both SOHC and DOHC form, to compete in and win the Isle of Man TT. Before fully developed, World War II intervened, and production of the Manx was delayed until 1946. The Manx quickly gained a reputation for its speed and reliability, allowing it to dominate the motorcycle Grand Prix racing and the Isle of Man TT for decades.

1952 NORTON MANX DESIGN
The Manx engine has an aluminum alloy cylinder block and head with a single overhead camshaft (SOHC) driven by a vertical shaft and bevel gears. They were hand assembled engines. The 1948 Norton Manx was the first to benefit from telescopic front forks and massive twin leading shoe (TLS) front brakes. 1949 was the first year for the Norton Manx Grand Prix models, purpose-built for road racing, and in 1950, they introduced the legendary “Featherbed Frame”. It was made of all-welded steel tubing instead of the common practice of heavy cast iron brazed lugs. It saved weight and made the bike lighter, and they handled like nothing else on the market. The 1952 Norton Manx was the last to use the ‘long-stroke’ engine. The following year, the engine received a major rework using a shorter stroke (86mm) and larger bore (85.6mm) making the ratio nearly “square”.


1952 Norton Manx SPECIFICATIONS


Engine type

Displacement

Bore & Stroke

Compression

Carburetor

Ignition

Engine Output

Primary Drive

Clutch

Gearbox

Final Drive

Frame type

Wheelbase

Suspension, F

Suspension, R

Brake, F

Brake, R

Weight

Top Speed

500 MANX                      

Air-cooled DOHC single

499cc

79.62mm X 100mm

8.6:1

Amal GP, 1-7/32"

Lucas magneto

47 bhp @ 6500 rpm

Chain

Multi-plate, wet

4-speed, R-foot shift

Chain

Featherbed

56.0"

Telescopic, oil damped

Swing arm, 2 dampers

TLS 8" drum

SLS 7" drum

310 lbs / 180 kg

130 mph / 210 kph

350 MANX                 

Air-cooled DOHC single

348cc

71mm X 88mm

9.0:1

Amal GP, 1-1/8"

Lucas magneto

35 bhp

Chain

Multi-plate, wet

4-speed, R-foot shift

Chain

Featherbed

56.0"

Telescopic, oil damped

Swing arm, 2 dampers

TLS 8" drum

SLS 7" drum

310 lbs / 180 kg

115 mph / 185 kph



MORE NORTON PAGES:
Norton Motorcycles
.....Norton Manx
..........1948
..........1949
..........1952
..........1953
..........1952
..........1957
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..........1962
.....Norton Dominator
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..........1959
.....Norton Atlas
..........1966
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..........1968
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..........1970
..........1971
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..........1973
..........1974
..........1975
.....Interview with a Norton Expert


Check out these NORTON BOOKS

NORTON COMMANDO: THE COMPLETE STORY


THE UNAPPROACHABLE NORTON


NORTON COMMANDO: ESSENTIAL BUYERS GUIDE


ILLUSTRATED HISTORY OF NORTON MOTORCYCLES, by Roy Bacon


NORTON COMMANDO SHOP MANUAL, Haynes


NORTON COMMANDO: ULTIMATE PORTFOLIO


NORTON FACTORY WORKSHOP MANUAL, 1957-1970


NORTON


ILLUSTRATED MOTORCYCLE LEGENDS: NORTON by Roy Bacon


NORTON 500, 600, 650 & 750 TWINS WORKSHOP MANUAL, Haynes


NORTON MOTORCYCLES FROM 1950-1986


NORTON DOMINATOR PERFORMANCE PORTFOLIO 1949-1970


ILLUSTRATED NORTON BUYERS GUIDE, by Roy Bacon


NORTON, COMPLETE ILLUSTRATED HISTORY


NORTON DOMINATOR


NORTON TWIN RESTORATION, by Roy Bacon


THE NORTON STORY


NORTON COMMANDO


NORTON FACTORY REPAIR HANDBOOK, 750 & 850 COMMANDO


NORTON ROTARIES


BOOK OF THE NORTON 1938-1956


BOOK OF THE NORTON DOMINATOR


MANX NORTON


NORTON: A HISTORY


BOOK OF THE NORTON OHV SINGLES, 1955-1963


NORTON: THE COMPLETE HISTORY


MANX NORTON SUPER PROFILE


NORTON SINGLES 1927-1966, by Roy Bacon


BOOK OF NORTON, ILLUSTRATED SHOP MANUAL 1932-1939, by Clymer


NORTON- THE RACING STORY


DOMINATOR IN THE SHADOWS


NORTON TWINS, by Roy Bacon


NORTON TWINS REPAIR MANUAL, Haynes


NORTON ROTARIES MOTOR CYCLES


THE MANX NORTON






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