Yamaha XF50X

C3
Manufacturer Yamaha
Also called Yamaha Vox (Japan), Yamaha Giggle (Europe)
Production 2007–present
Class Scooter
Engine 49 cc liquid-cooled, fuel injected 4-stroke, electronic ignition
Bore x stroke: 38.0 mm x 43.5 mm
Compression ratio: 12.0:1
Top speed 37 mph
Transmission V-belt automatic
Suspension Front: Telescopic fork
Rear: Unit swing
Brakes Front/Rear: 110mm drum
Tires Front/Rear: 120/90-10
Wheelbase 50.4 in (1,280 mm)
Dimensions L: 73.0 in (1,854 mm)
W: 27.0 in (686 mm)
H: 41.1 in (1,044 mm)
Seat height 28.9 in (734 mm)
Weight 198 lb (90 kg) (dry)
Fuel capacity 1.2 US gallons (4.5 l)

The Yamaha XF50 (marketed as the C3 in North America, Vox in Japan, and Giggle in Europe) is a liquid cooled 49cc four-stroke motor scooter made by Yamaha Motor Company. It is notable for the 9-gallon capacity of the under-seat storage compartment, and a distinctively "box"-like rear section and seat which accommodates it.

Engine/drivetrain

Chassis/suspension

Fuel Economy

The United States Environmental Protection Agency mileage estimates for the C3 are up to 115 miles per gallon (2L per 100 km), depending upon how it is ridden, maintenance, road conditions, cargo, and driver/passenger weight.

Speed Limitations

In North America, the C3's top speed is limited by the factory via a washer on the end of the boss shaft of the V-belt transmission. This washer limits how close the belt sheaves can come together, thus limiting the potential front diameter of the belt at full throttle. Removal of the washer is possible with simple tools and will increase the top speed to an RPM limited of 40 mph, although damage caused by modification is excluded from the Yamaha warranty.[1]

In Europe the Giggle Primary sheave variator (Part No 15PE76200000 ) is different from its US C3 version (Part No 3XYE7620010). This limits the Giggle to 31 MPH, even down hill. However the US version is freely available in the UK, NL & Germany. With no further modification it will allow the Giggle to get to 38MPH on level roads and >40 mph down hill. The effect of removing the tiny washer that sits between the two 'cones' is a gain of 1-2 mph however research has shown that moving the washer behind the primary Sheave has the same effect and improves the geometry of the V-belt. These modifications may contravene the law in certain EU states and void insurance !

The Giggle also has a slightly lower rev limit.

Red 2008 Yamaha c3 XF50

References

  1. ↑ YAMAHAMOTOR CORPORATION, U.S.A. STREET & ENDURO MOTORCYCLE LIMITED WARRANTY (PDF), Yamaha Motor Corporation USA
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