Matchless G9

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Matchless-g9-48-01.jpg
Matchless G9
Manufacturer
Production 1948 - 58
Engine
Parallel twin cylinder
Compression ratio 7.7:1
Top Speed 137 km/h / 85 mph
Fuel System Amal 376/6
Ignition Magneto, Lucas K2F
Spark Plug KLG FE80, 14mm thread
Battery Lucas, 6V 12 Ah
Transmission 4-Speed
Frame Single top and down pipe, double cradle
Suspension Front: Teledraulic
Rear: Swingarm, twin shocks and coil springs, oil dampers
Brakes Front: Drum
Rear: Drum
Front Tire 3.25 x 19 in.
Rear Tire 3.50 x 19 in.
Wheelbase 1403 mm / 55.25 in.
Weight 181 kg / 400 lbs (dry),
Oil Capacity 2.5 L / 5.3 US pints
Fuel Capacity 17 L / 4.5 US gal
Manuals Service Manual


It could reach a top speed of 137 km/h / 85 mph.

Engine[edit | edit source]

The engine was a Air cooled cooled Parallel twin cylinder. The engine featured a 7.7:1 compression ratio.

Chassis[edit | edit source]

It came with a 3.25 x 19 in. front tire and a 3.50 x 19 in. rear tire. Stopping was achieved via Drum in the front and a Drum in the rear. The front suspension was a Teledraulic while the rear was equipped with a Swingarm, twin shocks and coil springs, oil dampers. The G9 was fitted with a 17 L / 4.5 US gal fuel tank. The bike weighed just 181 kg / 400 lbs. The wheelbase was 1403 mm / 55.25 in. long.

Photos[edit | edit source]

Matchless G9 Matchless G9 Matchless G9

Overview[edit | edit source]

Make Model Matchless G9
Year 1948 - 58
Engine Type Parallel twin cylinder
Displacement 498 cc / 30.4 cub in.
Bore X Stroke 66 x 72.8 mm
Cooling System Air cooled
Compression 7.7:1
Lubrication Dry sump
Engine Oil Hot: SAE 50 Cold: SAE 30 Extremely Cold: SAE 20
Oil Capacity 2.5 L / 5.3 US pints
Exhaust Twin, chrome, megaphone silencers
Fuel System Amal 376/6
Ignition Magneto, Lucas K2F
Starting Kick
Battery Lucas, 6V 12 Ah
Spark Plug KLG FE80, 14mm thread
Maximum Power 24.3 kW / 33 hp @ 6800 rpm
Transmission 4-Speed
Final Drive Chain
Gear Ratios 1st 2.67 / 2nd 1.77 / 3rd 1.35 / 4th 1.0:1
Frame Single top and down pipe, double cradle
Wheelbase 1403 mm / 55.25 in.
Front Suspension Teledraulic
Rear Suspension Swingarm, twin shocks and coil springs, oil dampers
Front Brakes Drum
Rear Brakes Drum
Wheels Steel, wire spokes
Front Tire 3.25 x 19 in.
Rear Tire 3.50 x 19 in.
Dry Weight 181 kg / 400 lbs
Fuel Capacity 17 L / 4.5 US gal
Top Speed 137 km/h / 85 mph
Colours Black, Red
Source Wikipedia