Yamaha XS1100
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| Manufacturer | Yamaha |
|---|---|
| Also called | XS1100, XS11 |
| Production | 1978-1981 |
| Class | Standard |
| Engine | Air cooled,1,101 cc (67.2 cu in) inline four, DOHC, carb. (4) Mikuni BS34II constant velocity air |
| Compression ratio | 9.2:1 |
| Top speed | 129.4 mph (208 km/h) |
| Power | 95 hp (71 kW) @8000rpm (claimed) |
| Torque | 66.5 lb·ft (90.2 N·m) @6500rpm (claimed) |
| Ignition type | Transistorized, vacuum advance |
| Transmission | 5 speeds, shaft and bevel gear |
| Brakes |
Front 2x298 mm (11.7 in) single piston calipher Rear 1x298 mm (11.7 in) single piston calipher |
| Tires |
Front 3.5H19 Bridgestone Rear 4.5H17 Bridgestone |
| Rake, trail | 20.5°, 130 mm (5.1 in) |
| Wheelbase | 1,530 mm (60.1 in) |
| Dimensions |
W: 812 mm (32.0 in) |
| Seat height | 820 mm (32.3 in) |
| Weight | 603 lb (274 kg) (wet) |
| Fuel capacity | 20 l (5.3 US gal) |
| Oil capacity | 3.97 l (1.0 US gal) |
| Fuel consumption | 37.9 mpg‑US (16.1 km/l) |
The Yamaha XS Eleven motorcycle, also called XS11 and XS1100, is a Japanese standard produced from 1978 to 1981, powered by a air-cooled 1,101 cc (67.2 cu in) 4-stroke, DOHC inline four-cylinder engine mounted transversely in a duplex cradle frame with swingarm rear suspension, shaft drive, and telescopic forks.
The XS Eleven made its debut in 1978 as the largest capacity then in production. It featured dual front disc brakes, a rear disc brake, shaft drive and cast wheels.
In 1979, Yamaha followed the growing trend of offering a "factory custom" version of the bike, called a "Special" by Yamaha. Pullback handlebars, a stepped seat, a smaller, fatter rear wheel, a smaller capacity tear-drop gas tank, fully adjustable suspension, and altered frame created a factory custom, forerunner of the modern cruiser. The XS Eleven Special sold well despite complaints about the poor ergonomics. "What that translates to is a bike with an awkward riding position but generally excellent road manners. In fact, most of the things that irritated this staff in the way the bike rode and handled could be traced to the handlebar, which, although certainly as trendy as disco dancing, was not what the ergonomics doctor ordered for precise, comfortable control."
For the 1981 model year, a even more touring oriented version of the XS Eleven was produced. This model, dubbed the Venturer was equipped with a Windjammer like fairing similar to those made by the Vetter Fairing Company but branded by Yamaha. Venturers included matching trunk and hard bags. Additionally, the Venturer included a 6.3 gallon tank for increased range while touring.
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Wikipedia