Yamaha Sniper
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Yamaha Sniper 135, also known as Yamaha Spark 135 in Thailand, Yamaha Exciter in Vietnam and Yamaha Jupiter MX in Indonesia and Singapore, is a small underbone bodied motorcycle manufactured by Yamaha Motor Company which is also a kapchai model with the largest displacement ever. Powered by a water-cooled 135 cc 4-stroke engine, the Sniper135 is specially designed by the parent company in Japan for Southeast Asian market.
There are two versions available, the hand clutch version with mags/cast type rim and Automatic clutch version with spoke time rim.
[edit] Specifications
- Engine: SOHC 4-valve 4-stroke 135 cc water-cooled engine
- Displacement: 134.9 cc
- Max power: 8.45 kW (11.33 PS) @ 8,500 rpm
- Max torque: 11.65 N-m @ 5,500 rpm
- Max speed: About 140 km/h
- Bore x stroke: 54.0 x 58.7 mm
- Compression ratio: 10.9 : 1
- Transmission: 4-speed
- Clutch: Wet multi-plate centrifugal
- Frame Type: Diamond-shaped underbone steel tube
- Suspension (F): Telescopic
- Suspension (R): Monoshock
- Brake (F): Disc
- Brake (R): Drum
- Dry Weight: 103 kg
- Average Fuel Consumption: 60 km/liter at speed of 60 km/h, around 35-40km/liter at speed of 100 km/h
[edit] Features
- DiASil (die-cast aluminum cylinder) which has better heat conductance to dissipate excessive heat easily.
- Lighter forged piston
- Roller bearing rocker arms with less friction than typical rocker arms.
- 4-valve water-cooled engine - The 4-valve engine configuration provides better volumetric efficiency compared with other 4-stroke kapchai models which uses 2-valve engine design, enabling the engine to produce higher torque at high rpm. However, the engine displacement of 135 cc limits the ability of air-cooling system while retaining the small kapchai design at the same time, therefore water-cooling system which has better cooling efficiency is used.
- Carburetor with throttle position sensor - The Y135LC uses Mikuni VM22 carburetor equipped with throttle position sensor for more precise ignition timing, increasing the engine's efficiency.
- Catalytic converter - Even though most 4-stroke kapchai models are capable to surpass strict emission standards without even using the catalytic converters, Yamaha has taken an initiative to install a catalytic converter to the Y135LC to surpass even stricter emission standards in the future.
