Tuesday, 18 March 2008

Yamaha YZF R15- 150cc

Yamaha YZF R15 150cc

Yamaha entering the 150cc range of sport bikes is getting bigger by the day, the new motorcycle would as the story go’s be the Yamaha YZF-R15 a 150cc full fairing motorcycle, with the highest horsepower engine (22hp) in its class at a dry weight of just 120kilo.

If the rumors are correct, then Yamaha will take the crown in the 150cc range from the Honda CBR-150R. The Yamaha YZF-R15 is supposed to be a four-stroke, liquid cooled single cylinder, 4-valve SOHC, 149.8cc engine with oil-cooling and electric fuel injection.

To quote an insiders at Yamaha the Yamaha YZF-R15 would be a real R-series and is packed with Grand Prix technology. The Yamaha YZF-R15 will deliver stunning R-Series styling and exhilarating sports performance. A highly sporty constant mesh, 6-speed transmission system, with Yamaha own wet sump (Yamalub) lubrication system.

The chassis is a high tensile steel deltabox design, familiar to what we seen with the Yamaha YZF-125 and the Yamaha GP250 bike. The rumor of the Yamaha YZF-R15 tells that this radical, high-revving, fuel-injected 150cc is the work of the same engineers who created our YZF-R1 and YZF-R6 supersport bikes and the YZF-R15 is capable to deliver stunning 150cc performance.

R1 is inspired from M1, Yamaha’s YZF R15 is developed to imitate R1 in every aspect. Yes, you can expect the exceptional motorcycling experience in the R15. In Yamaha’s term YZF R15 150cc is a machine, like all other Yamaha R series , that comes with racing DNA and the spirit of competition living in every component.


YAMAHA release.the 150cc engine which powers the YZF R15 is the India’s first 150cc liquid cooled engine. Yamaha has brought lot of advanced technologies which are usually used in higher displacement engines for this 150cc mill. Here are few highlights of YZF R15’s hi-tech engine.

YZF R15 makes use of DiASil (Die-casting Aluminum-Silicon) cylinder. The DiASil Cylinder is an all-aluminum cylinder made possible by an exclusive Yamaha aluminum forging technology. Because it uses a 20% silicon aluminum alloy, it is possible to create a cylinder wall that is so hard and durable that it eliminates the need for a conventional steel cylinder sleeve. And, because the cylinder is all aluminum, it has excellent heat dissipation qualities (cooling capacity is improved by 60% and reduces engine weight (by 30%) at the same time.

YZF R15 makes use of forged piston (India’s first) which enables lighter piston design and excellent power developement.

YZF R15’s 4-valve combustion chamber adopts centrally mounted spark plug and six hole type injector which leads to path breaking performance.

A compact radiator cools the engine to maximize stablity and performance.

Similar to the R1, Yamaha has adopted a six speed transmission for its new 150cc YZF R15. Optimized ratios will help you to keep the motor singing in the high-rpm range throughout all the gears.

look the dimensions of the monster. YZF R15 must be the most compact bike in its class. It’s overall length is 1070mm, overall width is 670mm and its wheels base is 1290mm. Since sporty YZF R15 is shorter too and its height is just 1070mm. YZF R15 150cc features F 80/90 -17 inches tyres in the front and 100/80-17 inches tyres in the rear. Both the tyres are tubeless.

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