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Yamaha XS-1

|
Make Model |
Yamaha XS-2 |
|
Year |
1972- |
|
Engine |
Air cooled, four stroke, parallel twin cylinder, SOHC, 2
valves per cylinder. |
|
Capacity |
653 |
|
Bore x Stroke |
75 x 74 mm |
|
Compression Ratio |
8.4:1 |
|
Induction |
2x Mikuni carbs |
|
Ignition /
Starting |
Battery, induction coil /
electric & kick |
|
Max Power |
53 hp @ 7200 rpm |
|
Max Torque |
54 Nm @ 6800 rpm |
|
Transmission /
Drive |
5 Speed / chain |
|
Front Suspension |
Telescopic forks |
|
Rear Suspension |
Dual shock absorbers |
|
Front Brakes |
Single disc |
|
Rear Brakes |
Drum |
|
Front Tyre |
3.50-19 |
|
Rear Tyre |
4.00-18 |
|
Dry-Weight |
195 kg |
|
Fuel Capacity |
15 Litres |

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 TriumprH enjoyed
world-record status from theirjl 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 ai readily available twin exhibiting the
old! British virtues of power and straight-1 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-aluminium 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.
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