Yamaha XS 1100F

 

 

 

Make Model

Yamaha XS 1100F

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 29º 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 ¼ Mile  

11.7 sec / 114.2 mph 183.8 km/h

Top Speed

126 mph / 202.8 km/h

Touring: XS11F

Defining a touring bike is getting tougher all the time as more sophisticated shaft drive machines are produced, but when it comes time to hit the open road in search of miles, nothing beats Yamaha's XS1100. It's big, it's brutish, it's fast and it's comfortable. It's almost a superbike: it's the best touring bike made.

What makes the Eleven something more than the average touring bike is the motor. The 95 tire-shredding, eyeball-flattening horses make the XS an acceleration match for anything on two wheels. The torque is enormous. It requires a different technique at the dragstrip, it's so strong. None of this eight thou and dump it stuff for the Yamaha. No, it works best at lower speed than any other bike where its enormous 66.5 ft./lb. of torque seems to pull the dragstrip back past the motorcycle when the clutch is gently released.

Ordinarily a motor as muscular as the Eleven's powerplant would eliminate it from consideration as a touring bike. Only the soft suspension and total comfort of the whole bike make it perfectly clear that the XS Eleven is a touring machine.

Little bumps or big potholes are just swallowed up by the plush front forks and rear shocks. The Eleven's ride should be compared not with other motorcycles but with plush cars. And the controls, the clutch that takes less effort than the clutch on Yamaha's own 750 or 650 or 400, and a throttle that is easy to turn, and brakes that halt the mighty Eleven with little fuss or trauma, all contribute to the feeling of elegance.

Okay, so the handling isn't going to please the cafe racer set. There are other motorcycles designed for going around corners. The Eleven is designed to go fast and smooth. Lord, is it smooth. Not even the most sophisticated six cylinder motorcycles are any smoother. Big Fours are supposed to have torsional vibrations that buzz the handlebars. But the Eleven doesn't.

Touring bikes are distinguished by the mountain of accessories their owners pile on them. Like a good touring bike, the Yamaha is readily adaptable to most of the accessories available and it handles them masterfully. Yamaha even sells its own collection of touring accessories so a customer can buy a full dress Eleven ready to roll from his dealer's showroom floor.

Yamaha's XS Eleven has more of everything you need to go far than any other bike made.