The Matchless G12 (1958-66) is a twin cylinder motorcycle with a capacity of 646 cc / 39.4 cub in. It has a double cradle frame and a teledraulic fork front suspension with a swingarm and twin shocks, Girling rear suspension. It also features a 4-speed transmission with a chain, 97 links final drive, drum brakes with 7in. sls both front and rear, and steel wire spoke wheels with a front tyre of 3.25 x 19 in. and a rear tyre of 3.50 x 19 in. The motorcycle has a dry weight of 180 kg / 396 lbs and a fuel capacity of 17 L / 4.5 US gal.
The engine has a compression ratio of G12/de Luxe at 7.5:1, while the CS/CSR has a 8.5:1 ratio, with a lubrication system of dry sump and an oil capacity of 2.5 L / 5.3 US pints. The twin chrome exhaust and Amal 389, 1-1/8 fuel system is regulated by a Lucas K2F ignition and is started by kick. The battery is Lucas 6V, 12Ah, and the spark plug for G12/de Luxe/CS is KLG FE80, with a 14 mm thread and 3/4 in. reach, while the CSR’s spark plug is KLG FE220, again with a 14 mm thread and 3/4 in. reach.
With a maximum power output of 26kW / 35 hp @ 6500 rpm, the Matchless G12 (1958-66) has an average consumption of 4.3 L/100 km / 23.4 km/l / 55 US mpg and a top speed of 153 km/h / 95 mph. The motorcycle is available in black with chrome tank panels. The information is sourced from Wikipedia.
Technical specifications:
Make Model: Matchless G12 (all models)
| Year | 1958 – 66 |
|---|---|
| Engine | Twin cylinder |
| Capacity | 646 cc / 39.4 cub in. |
| Bore x Stroke | 72 x 79.3 mm |
| Cooling System | Air cooled |
| Compression Ratio | G12/de Luxe: 7.5:1 CS/CSR: 8.5:1 |
| 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 |
| Fuel System | Amal 389, 1-1/8 |
| Ignition | Lucas K2F |
| Starting | Kick |
| Battery | Lucas 6V, 12Ah |
| Spark Plug | G12/de Luxe/CS: KLG FE80, 14 mm thread, 3/4 in. reach CSR: KLG FE220, 14 mm thread, 3/4 in. reach |
| Transmission | 4-Speed |
| Final Drive | Chain, 97 links |
| Internal Gear Ratios | 1st 2.56 / 2nd 1.70 / 3rd 1.22 / 4th 1.00:1 |
| Maximum Power | 26 kW / 35 hp @ 6500 rpm |
| Frame | Double cradle |
| Front Suspension | AMC teledraulic fork |
| Rear Suspension | Swingarm with twin shocks, Girling |
| Front Brakes | Drum, 7in. sls |
| Rear Brakes | Drum, 7in. sls |
| Wheels | Steel, wire spokes |
| Front Tyre | 3.25 x 19 in. |
| Rear Tyre | 3.50 x 19 in. |
| Dry Weight | 180 kg / 396 lbs |
| Fuel Capacity | 17 L / 4.5 US gal |
| Average Consumption | 4.3 L/100 km / 23.4 km/l / 55 US mpg |
| Top Speed | 153 km/h / 95 mph |
| Colours | Black with chrome tank panels |
| Source | Wikipedia |
