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Matchless G80 500 (G80S)
Matchless G80 500 (G80S)
Published: 2013/10/27
Channel: RoofRack2
1949 Matchless G80 Walkaround
1949 Matchless G80 Walkaround
Published: 2016/10/23
Channel: Chris Robinson
matchless g80
matchless g80
Published: 2012/07/09
Channel: Classic Motorcycles
1956 Matchless G80CS (500cc)
1956 Matchless G80CS (500cc)
Published: 2017/02/18
Channel: 51455
Matchless G80 1956 500cc Single Pt1
Matchless G80 1956 500cc Single Pt1
Published: 2012/04/06
Channel: Thesupermoofs
Matchless G80
Matchless G80
Published: 2015/09/10
Channel: bracisland
Brendan Roberts Matchless G80
Brendan Roberts Matchless G80
Published: 2017/02/13
Channel: tripodtiger
1967 Matchless G80CS - Start, Idle, Run by Randy
1967 Matchless G80CS - Start, Idle, Run by Randy's Cycle Service @ rcycle.com
Published: 2010/05/21
Channel: RandysCycleService
My vintage race bike project
My vintage race bike project 'Matchless G80'
Published: 2016/07/25
Channel: David Evans
MATCHLESS G80 1952
MATCHLESS G80 1952
Published: 2017/01/15
Channel: Hub Loz
matchless g80
matchless g80
Published: 2011/12/29
Channel: Rgreasers
Matchless g80s 500 single
Matchless g80s 500 single
Published: 2012/03/31
Channel: DavidPodge31
matchless G80
matchless G80
Published: 2010/09/22
Channel: Rgreasers
1965 Matchless G80 Touring Barn Find For Sale
1965 Matchless G80 Touring Barn Find For Sale
Published: 2016/03/05
Channel: Glenn Bator
Matchless G80cs 1957 Scrambler 500cc
Matchless G80cs 1957 Scrambler 500cc
Published: 2012/01/25
Channel: MrVelofellow59
1948 Matchless G80
1948 Matchless G80
Published: 2016/10/26
Channel: burragegrove
Matchless G80 1964 for sale
Matchless G80 1964 for sale
Published: 2015/10/05
Channel: Thomas Tschechne
Matchless G80 big 500cc from 1955
Matchless G80 big 500cc from 1955
Published: 2017/06/13
Channel: Dutch Lion Motorbikes
Matchless G80 bobber 1954
Matchless G80 bobber 1954
Published: 2013/07/28
Channel: TheDideroni
Matchless G80CS 1955 500cc
Matchless G80CS 1955 500cc
Published: 2012/08/28
Channel: Peter Sprot
Matchless G80 500cc 1959
Matchless G80 500cc 1959
Published: 2017/02/11
Channel: steenhoejfeldt
Matchless G80
Matchless G80
Published: 2013/07/19
Channel: vintagetriples
my first attempt at starting our 1987 matchless G80
my first attempt at starting our 1987 matchless G80
Published: 2007/07/25
Channel: StupidRabbit420
Matchless  G80S 500cc sound
Matchless G80S 500cc sound
Published: 2013/05/20
Channel: Kjeld Pedersen
Matchless G80CS 1961
Matchless G80CS 1961
Published: 2014/12/26
Channel: Chirowezel1
Matchless G80 CS 1957 Scrambler, Montevideo, Uruguay .-Owner Renato
Matchless G80 CS 1957 Scrambler, Montevideo, Uruguay .-Owner Renato
Published: 2009/04/15
Channel: renahitze renato
Riding Matchless G80cs 1957 Scrambler 500cc
Riding Matchless G80cs 1957 Scrambler 500cc
Published: 2012/01/25
Channel: MrVelofellow59
1957 Matchless G80s Start up
1957 Matchless G80s Start up
Published: 2017/01/10
Channel: Russell James Motorcycles
1988 Harris Matchless G80 cold start
1988 Harris Matchless G80 cold start
Published: 2016/10/28
Channel: Greg Rollo
Matchless G80 from 1947
Matchless G80 from 1947
Published: 2015/10/01
Channel: Dutch Lion Motorbikes
matchless g80 001
matchless g80 001
Published: 2015/03/09
Channel: Classic Motorcycles
1959 Matchless G80 500
1959 Matchless G80 500
Published: 2014/01/11
Channel: slippyroads
Matchless G80S 500 cc single
Matchless G80S 500 cc single
Published: 2009/11/02
Channel: spectrasonly
Matchless G80 03
Matchless G80 03
Published: 2011/08/23
Channel: TheBluegrassBob
【Gopro】Matchless G80【L.O.C】
【Gopro】Matchless G80【L.O.C】
Published: 2014/09/01
Channel: S.R. Traveler
A trip on my Matchless G80 500 1952
A trip on my Matchless G80 500 1952
Published: 2010/08/14
Channel: k l
1957 Matchless G80s For sale
1957 Matchless G80s For sale
Published: 2017/01/10
Channel: Russell James Motorcycles
Matchless g80
Matchless g80
Published: 2015/04/18
Channel: BEYOND_DREAMS_S3
1988 Harris Matchless G80 running...
1988 Harris Matchless G80 running...
Published: 2011/12/19
Channel: theblueslug
MATCHLESS G80 nsj 001
MATCHLESS G80 nsj 001
Published: 2013/06/01
Channel: Classic Motorcycles
Military Matchless G80 of the 40
Military Matchless G80 of the 40's
Published: 2015/03/28
Channel: MrBighealey
1947 Matchless G80 500cc @ Newland
1947 Matchless G80 500cc @ Newland's corner cafe
Published: 2016/10/30
Channel: TheOutdoorFun
Starten der Matchless G80 nach langem Winterschlaf
Starten der Matchless G80 nach langem Winterschlaf
Published: 2013/02/23
Channel: Bernhard Ernst
matchless g80cs 1956 motorcycle
matchless g80cs 1956 motorcycle
Published: 2015/05/14
Channel: Norah Willims
1961 MATCHLESS G80CS MOTORCYCLE FOR SALE
1961 MATCHLESS G80CS MOTORCYCLE FOR SALE
Published: 2013/07/19
Channel: johnnymoped
Review "MATCHLESS G80"
Review "MATCHLESS G80"
Published: 2017/09/26
Channel: E M
Sunday Ride with Matchless
Sunday Ride with Matchless
Published: 2015/08/10
Channel: Catherine Bellizzi
Matchless G80 02
Matchless G80 02
Published: 2011/08/23
Channel: TheBluegrassBob
Matchless G80
Matchless G80
Published: 2013/09/14
Channel: Bernhard Ernst
Matchless G80S 500 1952 starting up
Matchless G80S 500 1952 starting up
Published: 2007/03/28
Channel: k l
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WIKIPEDIA ARTICLE

From Wikipedia, the free encyclopedia
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Matchless G80
Matchless-g80s.jpg
Manufacturer Associated Motor Cycles (AMC) (London)
Production 1949 to 1966
Engine 498cc Single cylinder, pushrod 2 valve, 4 stroke
Power 28 bhp (21 kW) @ 5,600 rpm
Transmission 4-speed AMC gearbox to final drive chain
Wheelbase 1,397 mm (55.0 in)

The Matchless G80 is a single cylinder 500 cc British motorcycle built by Associated Motorcycles (AMC) between 1946 and 1966. During the 1950s and 1960s, the main export product for AMC was the AJS/Matchless range – the road bikes were very similar, often with only the badges distinguishing one marque from the other; the equivalent AJS being the Model 18.

Development[edit]

In the early 1950s, the most popular British four-strokes were still pushrod singles. The Matchless G80 is typical of this era. The earliest G80 is sometimes referred to as a G80L, the L signifying "Teledraulic" forks, rather than girder forks.[1]

The magneto on an AJS was in front of the cylinder, and the Matchless magneto was behind. A design originating in the 1930s, the Matchless was updated with a spring frame (swingarm) rear suspension in 1949, becoming the G80S. The suspension was a vast improvement on the bouncy rigid rear end but wheel travel was limited.[2]

AMC had adopted Velocette's twin-shock swingarm rear suspension design for its top models. Vertical shock absorber units were introduced in 1949. The initial "Candlestick" shocks held only 50 cc of SAE 20 weight oil. Leak prone, they were replaced by the "Jampot" shocks in 1951,[2] and by Girling shocks in 1956. In 1957, AMC switched from Burman gearboxes to their own make.[3]

The leaky pressed-steel primary chain-case first appeared on AMC machines in the 1930s. In 1958 an alloy cover primary chain-case became available.

Engine[edit]

The engine was released with a compression ratio of 5.9:1, because of the poor quality fuel available in the United Kingdom immediately after the Second World War.[2] In 1949 the hairpin valve springs were back, after the use of conventional coil valve springs in wartime engines. By 1951 the G80 had an alloy cylinder head and the barrel fins now went all the way to the base on competition models. The compression ratio was increased to 7.3:1 in 1956.

Low compression meant that it was easy to kick-start and was more flexible at low revs. The earlier long stroke version might not quite reach 80 miles per hour (130 km/h), but it could trundle along at less than 20 miles per hour (32 km/h) in top gear. It also gave good fuel economy.[2]

Model variations[edit]

The 500 cc "long stroke" G80CS was produced from 1951 through 1955. In 1956 it was replaced by the shorter stroke, larger bore models that used the same numeric codes. The bore of these early G80CS's was 82.5 mm (3.25"), while the 1956 through 1966 “short stroke” (final version) models had a bore of 86 mm. The C is for Competition (Scrambles) and the S for Suspension (not a rigid rear frame).

Matchless also made a 600cc version of the G80 called Typhoon. The bore was increased to 89mm while the stroke was increased from 85.5mm to a whopping 96mm. 125 bikes were reportedly made and almost all of them were sold in the USA. There was a road model with lights and a competition model without lights. The engine prefix code was TCS on these bikes.

Engine numbers usually start with the year of production, followed by model designation, and completed with the production number of the motorcycle.

Les Harris Matchless G80[edit]

Launched in 1987 by motorcycle spares businessman, Les Harris, and designed by Brian Jones,[4] a new “Matchless G80” single was released powered by an Austrian Rotax 4-stroke, single over-head cam (SOHC), 500cc engine. Components from Italy such as front and rear Paioli suspension, Dellorto carburretor, Lafranconi silencers and Brembo disc brakes were used [5] whilst, harking back to his licence-built Triumph Bonneville T140s, the frame doubled up as the oil tank. German components included the Varta battery and Magura switchgear. The model was offered in colours of silver, black or metallic burgundy. Although electric start and twin disc brakes were options, priced at £2700 (£500 more than a Yamaha motorcycle of similar specification), this was not a successful machine and production ended by 1990.[6]

See also[edit]

References[edit]

  1. ^ [1] AJSOC.com 1947 G80 (Retrieved December 31, 2006)
  2. ^ a b c d Matchless G80
  3. ^ "BSA Golden Flash on test", Classic Bike Guide, May 2008 
  4. ^ Westworth, Frank (December 1987). "A New Dream?". Motorcycle Enthusiast. London: Advanced Publishing Ltd. 6 (11): 6–9. 
  5. ^ http://archives.jampot.dk/Technical/HarrisG80/parts_lists/Alternative_parts.pdf
  6. ^ "A Matchless masquerade?". Classic Bike Guide. Horncastle: Mortons Media Group Ltd. 25 Feb 2010. Archived from the original on 10 December 2010. Retrieved 22 March 2015. 

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