1959 Matchless G80
500cc single

1959 MATCHLESS G80 BACKGROUND
As was the case with virtually all Matchless motorcycles, sister-company AJS had a nearly-identical version which they called the Model 18. Matchless had cut its teeth, and built its reputation fielding fast, robust and reliable big singles (ie: 350cc and 500cc). The Matchless G80/AJS Model 18 were pushrod-operated OHV singles with a nearly "square" bore and stroke, unusual in an era dominated by long-stroke (undersquare) designs.
MATCHLESS G80 FROM AMC
Matchless and AJS were part of the (at one time) gigantic AMC empire. AMC, short for Associated Motor Cycles, was formed by the owners of Matchless and AJS in 1938 to hold an expanding stable of British motorcycle brands. These would ultimately include Matchless, AJS, Norton, Sunbeam, James and Francis-Barnett. But by the time this G80 was built, AMC was already in decline. By 1960 they'd dropped everything but Norton and the Matchless/AJS singles, trying to focus their resources. It didn't help. By 1966 AMC was broke and Matchless went with it. Norton survived a few more years. Pity that.

1959 Matchless G80 SPECIFICATIONS

Engine type

Dislacement

Bore & Stroke

Compression

Carburetor

Engine output

Ignition

Charging

Lubrication

Primary drive

Clutch

Final drive

Gearbox

Suspension, front

Suspension, rear

Brake, front

Brake, rear

Tire, front

Tire, rear

Frame type

Wheelbase

Ground clearance

Seat height

Dry weight

Top speed

Air-cooled OHV single

497cc

86mm X 85.8mm

7.3:1

Amal Monobloc 389 1-1/8"

28 bhp @ 5,600 rpm

6V battery & coil

6V alternator

Dry sump, Norton gear-type oil pump

Chain

Multi-plate, wet

Chain

4-speed constant-mesh, right foot shift

Norton Roadholder telescopic fork

Swing arm w/2 Girling shocks

8" full-width Norton SLS drum

7" SLS drum

3.25" X 18"

3.50" X 18"

Duplex full cradle

55.0"

6.0"

30.0"

394 lbs

84 mph



MORE MATCHLESS PAGES:
AMC Motorcycles
Matchless Motorcycles
.....Matchless G3
.....Matchless G80
..........1949
..........1950
..........1959
..........1967
..........1968


Check out these MATCHLESS BOOKS





Matchless: The Complete Story



Matchless, once the largest British motorcycle manufacturer



AJS and Matchless Post-War Singles and Twins: The Complete Story



Motorcycle Apprentice: Matchless - in name & reputation (Classic Reprint)



History of Matchless Motorcycles



Matchless and Ajs Restoration



BOOK OF THE MATCHLESS 350 & 500cc SINGLES 1955-1966



AJS and Matchless: The Post-war Models



AJS and Matchless Gold Portfolio 1945-1966



Illustrated Ajs and Matchless Buyer's Guide (Illustrated Buyer's Guide)



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Back to top - 1959 Matchless G80
Last updated 12/9/17

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NEW SECTIONS:

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NEW PAGES
added this month:

* Helmet Features 2018
* AJS Motorcycles
* 1961 AJS Model 31
* 1959 AJS Model 16
* 1927 AJS Model H4
* 1959 AJS Model 31 CSR
* 1946 AJS Model 18
* 1964 AJS Model 16
* 1953 AJS Model 18
* 1950 AJS 7R Boy Racer
* 1933 BSA B33
* John's British Cycles
* 1961 Matchless G80 Typhoon
* 1958 BSA Gold Star
* Ariel Twins
* 1959 Ariel Huntmaster
* 1964 Triumph Thunderbird
* 1961 Triumph Cub
* 1959 Velocette Venom
* 1956 Triumph TR5R
* 1955 Vincent Black Prince
* 1951 Triumph Speed Twin
* 1958 Ariel Huntmaster
* 1954 Triumph T15 Terrier
* Military Motorcycles
* 1941 Harley-Davidson WLA
* 1942 Harley-Davidson WLA
* 1999 Harley-Davidson MT500
Enjoy. More coming soon...