Yamaha YZF-R15

About Yamaha YZF-R15

The YZF-R1 and YZF-R6 are equipped with under cowls that are based on the image of a diffuser, to give them the best form for aero-management. These are not cowls for simply enclosing the engine, but forms composed of blade surfaces that actively control airflow. This spirit has been directly inherited by the YZF-R15.
Harmony between rider and machine. Yamaha's Human Technology involves studying the form of the motorcycle actually in motion with the rider on it. The R series is the embodiment of 1) a wide frontal space that protects the rider, 2) an easy to ride seating area that gives riders the freedom of movement and allows them to steer effectively, 3) the glamorous tail treatment that takes into account the management of airflow behind the rider, and 4) a sensual racing form that brings all 3 of these elements together in a harmonious package. These characteristics have been splendidly reproduced in the YZF-R15.
Additionally, the designs were developed in the same modeling room where YZF-R1 designers worked. Information was shared, ensuring that the R lineage would be transmitted. In addition, the model also incorporates a multitude of adjustments for the Indian market including seat shape that allows for tandem riding (integrated with the main seat), tandem grips that are easy to grip and also contribute to the supersport design, and a riding position that takes into account comfort, etc. In other words, the YZF-R15 is characterized by a hybrid design that combines the world-class design of the R series with localized functions. The YZF-R15 was created to lead the supersport category in India. 

Yamaha YZF-R15 Features 

1. First India-made model with cooling method in the Indian market! Liquid-cooled engines provide stable performance, reduce vibrations, and offer a high quality ride. One characteristic of YZF-R15's new engine is that it is liquid-cooled.
2. The DiASil Cylinder was born from Yamaha's world-class aluminum die casting technology. DiASil Cylinders are all-aluminum cylinders made by Yamaha's proprietary aluminum die casting technology.
3. Fuel injection is used to ensure excellent fuel efficiency as well as environmental friendliness. The two components of the fuel injection mechanism used in YZF-R15, a) the sensors that gather information on the engine's operation, and b) the fuel supply system that supplies gasoline, have both been designed to be lightweight and simple.
4. The frame, which forms the basis for riding comfort and handling performance, is a Deltabox frame which delivers superior rigidity balance. This frame was designed to provide the best balance in longitudinal, lateral, and torsional rigidity. The synergy created by optimizing each dimension delivers a solid riding feel as well as comfort and agile riding performance.
5. YZF-R15 is equipped with a linked type monocross suspension that delivers a comfortable ride and a cushioning performance that is less prone to bottoming out. In particular, it reduces annoying 'sinking' when riding tandem.
6. This characteristic of motorcycles designed by Yamaha as represented by the R series reflects the philosophy running through these models expressing performance visually. For example, YZF-R6 shows a strong body line that springs up in a single line from the rear axle to the pivot and then to the head pipe.
7. A sharp form that cuts through air. Inheriting the 'R series' gene. YZF-R1 and YZF-R6 are equipped with under cowls that are based on the image of a diffuser, to give them the best form for aero-management. These are not cowls for simply enclosing the engine, but forms composed of blade surfaces that actively control airflow. This spirit has been directly inherited by YZF-R15.

Engine

Engine type	Liquid-cooled, 4-stroke, SOHC, 4-valve
Cylinder arrangement	Single cylinder
Displacement	149 .8 cc
Bore & Stroke	57  58.7 mm
Compression ratio	10.4:1
Maximum power	17 PS / 8,500 rpm
Maximum torque	15 N.m / 7,500 rpm
Starting system	Electric Start
Lubrication	Wet sump
Engine oil capacity	1.0 liters
Fuel tank capacity	12 liters
Fuel supply system	Electronic fuel injection
Ignition system	TCI
Primary / Secondary reduction ratio	3.042 / 3.000
Clutch type	Constant-mesh wet multi-plate
Transmission type	Return type 6-speed
Gear ratios	1st=2.833, 2nd=1.875, 3rd=1.364, 4th=1.143, 5th=0.957, 6th=0.84

Chassis

Frame type	Deltabox Frame
Caster / Trail	26 / 100 mm
Tire size (Front / Rear)	80/90-17 / 100/80-17
Brake type (Front / Rear)	Hydraulic, single disc (Front / Rear)
Suspension type (Front / Rear)	Telescopic / Linked type Monocross
Headlight	12 V 35 W / 35 W + 35 W

Dimensions

Overall length x width x height	1,995 mm x 670 mm x 1,070 mm
Seat height	790 mm
Wheelbase	1,290 mm
Minimum ground clearance	160 mm
Dry weight / Curb weight	120 kg / 131 kg