Yamaha XS650 / XS-1F
Yamaha XS650 / XS-1F | |
Manufacturer | |
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Production | 1971 |
Class | Standard |
Engine | Four stroke, parallel twin cylinder, SOHC, 2 valves per cylinder. |
Compression ratio | 8.4:1 |
Top Speed | 185 km/h / 115 mph |
Ignition | Battery, induction coil |
Transmission | 5 Speed |
Suspension | Front: Telescopic forks Rear: Dual shock absorbers |
Brakes | Front: Single disc Rear: Drum |
Front Tire | 3.50-19 |
Rear Tire | 4.00-18 |
Wheelbase | 1410 mm / 55.5" |
Weight | 185 kg / 408 lbs (dry), |
Oil Capacity | 3.0 Liters / 3.2 US qts |
Recommended Oil | Yamalube 10w-40 |
Fuel Capacity | 12.5 Liters / 3.3 US gal |
Manuals | Service Manual |
It could reach a top speed of 185 km/h / 115 mph.
Engine[edit | edit source]
The engine was a Air cooled cooled Four stroke, parallel twin cylinder, SOHC, 2 valves per cylinder.. The engine featured a 8.4:1 compression ratio.
Chassis[edit | edit source]
It came with a 3.50-19 front tire and a 4.00-18 rear tire. Stopping was achieved via Single disc in the front and a Drum in the rear. The front suspension was a Telescopic forks while the rear was equipped with a Dual shock absorbers. The XS650 / XS-1F was fitted with a 12.5 Liters / 3.3 US gal fuel tank. The bike weighed just 185 kg / 408 lbs. The wheelbase was 1410 mm / 55.5" long.
Photos[edit | edit source]
Overview[edit | edit source]
Yamaha XS 650 (XS-1F)
Following a decade when Japanese motor cycles for export were styled to
appeal almost exclusively to American tastes, with European riders having no
option but to tolerate the high, wide handlebars and other hallmarks, external
and internal, of the US-orientated motor cycle, Yamaha made a significant change in their marketing policy. From the
mid-1970s they began to take some account of the market in Europe, beginning
with modifications to the established XS650 twin on the advice of
tester-turned-racer Percy Tait.
The XS650 was first exported in 1973. It cashed in on its similarity to the
British-tinguished from the original by its all black leading-axle front fork.
It was first sold in made vertical twins that had gained a loyal postwar
following not only in the UK but also in North America, where Triumph enjoyed
world-record status from their speed dashes over the Salt Lake Flats of Utah.
As the British factories disappeared until finally only Triumph, in diminished
form, was left, the XS650 took over as a readily available twin exhibiting the
old British virtues of power and straight-forward design, plus one or two of
its own notably, more rugged construction, greater reliability and,
ultimately, enhanced power. Its popularity in the arduous sport of sidecar
moto-cross is testimony to its robust design.
As a road bike it showed parallels, welcome or otherwise, with the British
twins, not least in vibration carried to the rider and to other less durable
impedimenta such as bulbs, nuts and bolts, which shattered or loosened with
clockwork regularity.
Uprated over the years with front disc brakes in place of drum, and in some
applications having cast-aluminum wheels, the XS650 began the 1980s in Europe
in SE form, which entailed a throwback to US styling and a depressed
price tag that made it something of a bargain buy in comparison with
contemporary Triumphs.
Make Model | Yamaha XS 650 (XS-1F) |
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Year | 1971 |
Engine Type | Four stroke, parallel twin cylinder, SOHC, 2 valves per cylinder. |
Displacement | 653 cc / 39.8 cu in |
Bore X Stroke | 75 x 74 mm |
Compression | 8.4:1 |
Cooling System | Air cooled |
Lubrication | Wet sump |
Induction | 2 x Mikuni BS38 carburetors |
Ignition | Battery, induction coil |
Starting | Kick |
Max Power | 39.5 kW / 53 hp @ 7200 rpm |
Max Torque | 54 Nm / 5.5 kgf-m / 39.8 lb-ft @ 6800 rpm |
Transmission | 5 Speed |
Final Drive | Chain |
Front Suspension | Telescopic forks |
Rear Suspension | Dual shock absorbers |
Front Brakes | Single disc |
Rear Brakes | Drum |
Front Tire | 3.50-19 |
Rear Tire | 4.00-18 |
Dimensions | Length: 2175 mm / 85.6"Width: 905 mm / 35.0"Height: 1135 mm / 44.7" |
Wheelbase | 1410 mm / 55.5" |
Ground Clearance | 150 mm / 5.5" |
Dry Weight | 185 kg / 408 lbs |
Fuel Capacity | 12.5 Liters / 3.3 US gal |
Oil Capacity | 3.0 Liters / 3.2 US qts |
Top Speed | 185 km/h / 115 mph |