1947 Matchless G80

THE NEW 1949 MATCHLESS G80
1947 was the first year for Matchless G80 civilian production following World War 2. The company’s top-line 500 single, retained the rigid frame of the prewar bikes, but borrowed the Teledraulic telescopic front forks from the wartime G3/L. They were shared across many other makes and models with parent-company AMC’s empire of motorcycle brands. Typical of British bikes of the era, it used pushrods and a small bore/long stroke (undersquare).

MATCHLESS G80 DESIGN
Because of the poor quality of the petrol (gasoline) in the UK at the time, British car and motorcycle manufacturers alike produced engines with relative low compression ratios. The 1947 Matchless G80 had a 5.9:1 compression ratio. It used hairpin valve springs, changed over from the used of conventional coil springs on wartime models. In typical British fashion, the timing gear was on the right side of the engine, and the primary chain and clutch were on the right, driving a 4-speed Burman constant mesh gearbox which was shifted with the right foot.

1947 Matchless G80 ENGINE


1947 Matchless G80 SPECIFICATIONS

Engine type

Dislacement

Bore & Stroke

Compression

Carburetor

Engine output

Ignition

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

82.5mm X 93mm

5.9:1

Amal type 891 1-3/32"

23 bhp @ 5,400 rpm

Lucas Magneto

Dry sump

Chain

Multi-plate, wet

Chain

Burman 4-speed constant-mesh, right foot shift

AMC Teledraulic fork

Swing arm w/2 Candlestick shocks

7" SLS drum

7" SLS drum

3.25" X 19"

3.50" X 19"

Rigid

55.2"

5.5"

31.0"

390 lbs

80 mph


A WORK IN PROGRESS
In our efforts to complete our online index, and make this the world's greatest website about classic British motorcycles, we're building pages as fast as we can. The first thing we add are the pictures. Then come the specifications and then the history. So, if you see a page that just has only pictures on it, or just pictures and specs, please check back in a few weeks to see if we have it done. Thanks for your patience. And thanks for visiting Classic-British-Motorcycles.com. Please tell your friends about us.

Check out these MATCHLESS BOOKS

MATCHLESS, ONCE THE LARGEST BRITISH MOTORCYCLE MFR


HISTORY OF MATCHLESS MOTORCYCLES, KINDLE


MATCHLESS MAINTENANCE MANUAL 1939-1955 SINGLES


BOOK OF MATCHLESS 350 & 500 SINGLES 1945-1956


BOOK OF MATCHLESS 350 & 500 SINGLES 1955-1966


MOTORCYCLE APPRENTICE: MATCHLESS - IN NAME & REPUTATION


MATCHLESS & AJS RESTORATION, ROY BACON


MATCHLESS: THE COMPLETE STORY


AJS & MATCHLESS GOLD PORTFOLIO 1945-1966


AJS: THE COMPLETE STORY


SERVICE & OVERHAUL MANUAL: AJS & MATCHLESS SINGLES


SERVICE & OVERHAUL MANUAL: AJS & MATCHLESS TWINS


MORGAN 3-WHEELER: THE COMPLETE STORY






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NEW SECTIONS:

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NEW PAGES
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* Helmet Features 2018
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* 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
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* John's British Cycles
* 1961 Matchless G80 Typhoon
* 1958 BSA Gold Star
* Ariel Twins
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* 1964 Triumph Thunderbird
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* 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
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