Yamaha XS1100 Martini (1979)

The Yamaha XS1100 Martini motorcycle was introduced in 1979 and has a four stroke transverse four cylinder engine with a capacity of 1101 cc/ 67.2 cu-in. It has a compression ratio of 9.2:1 and is air cooled. The motorcycle has 4x Mikuni BS 34SS carburettors and is lubricated using a wet sump system. The ignition system is TCI additional vacuum adjusted and has an electric kick starter which is separated from the engine for emergency use only. The motorcycle has a wet, multi-disc clutch with 8 drive plates and 7 driven plates and is equipped with a 5-speed transmission. The final drive is a shaft with a gear ratio of 1st 38/17 (2.235), 2nd 39/24 (1.625), 3rd 36/28 (1.286), 4th 32/31 (1.032), and 5th 30/34 (0.882). The front suspension is telescopic with a front wheel travel of 175 mm / 6.8 in and the rear suspension is dual shocks swing arm and preload adjustable with a rear wheel travel of 80 mm / 3.1 in. The motorcycle has 2x 298mm discs for the front brakes and a single 298mm disc for the rear brakes. The Wet Weight is 258 kg / 568.7 lbs and its fuel capacity is 22 Litres / 5.8 gal. At its peak power, the motorcycle produces 95hp/70.8kW at 8500rpm and 9.2 kgf-m / 66.5 lb-ft at 6500rpm, while its top speed is 126 mph / 202.8 km/h. Overall, the Yamaha XS1100 Martini is a powerful and reliable motorcycle designed for both speed and comfort.

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Technical specifications:

Make Model: Yamaha XS 1100 Martini

Year: 1979

Engine: Four stroke transverse four cylinder, DOHC, 2 valves per cylinder.

Capacity: 1101 cc / 67.2 cu-in

Bore x Stroke: 71.5 x 68.6 mm

Cooling System: Air cooled

Compression Ratio: 9.2:1

Induction: 4x Mikuni BS 34SS Carburettor

Lubrication: Wet sump

Ignition: TCI additional vacuum adjusted! / electric kick starter – Witch is separated from the engine, for emergency mounting only

Spark Plug: BP6ES (NGK) or N-8Y (Champion)

Battery: GM 18Z-3A / 12v, 20 AH

Generator: A.C. Generator, voltage regulator, rectifier

Starting: Electric

Max Power: 95 hp / 70.8 kW @ 8500 rpm

Max Torque: 9.2 kgf-m / 66.5 lb-ft @ 6500 rpm

Clutch: Wet, multi-disc (8 drive plates, 7 driven plates)

Transmission: 5 Speed

Primary Reduction System: HY-VO chain & gear

Primary Reduction Ratio: 25/25 x 58/35 = 1.657

Final Drive: Shaft

Gear Ratio: 1st 38/17 (2.235) 2nd 39/24 (1.625) 3rd 36/28 (1.286) 4th 32/31 (1.032) 5th 30/34 (0.882)

Front Suspension: Telescopic fork.

Front Wheel Travel: 175 mm / 6.8 in

Rear Suspension: Dual shocks Swing arm, preload adjustable

Rear Wheel Travel: 80 mm / 3.1 in

Front Brakes: 2x 298mm discs

Rear Brakes: Single 298mm disc

Front Tyre: 3.50-19

Rear Tyre: 4.50-17

Rake: 29 o 30

Trail: 130 mm / 5.1 in

Wet Weight: 258 kg / 568.7 lbs

Fuel Capacity: 22 Litres / 5.8 gal

Consumption Average: 40.3 mpg

Braking 100 – 0: 39.7 m

Standing 1/4 Mile: 11.7 sec / 114.2 mph 183.8 km/h

Top Speed: 126 mph / 202.8 km/h