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The Bike - YZF-R1

2009 YZF-R1
Benefiting from an unrivalled influence of MotoGP technology, the latest generation World Superbike Championship YZF-R1 represents the most significant development in engine and chassis technology ever seen in the history of the legendary motorcycle.

Featuring a revolutionary crossplane crankshaft engine and unique uneven firing order, the production model of the YZF-R1 delivers near linear torque providing smoother acceleration and greater levels of grip than previously thought possible, setting new standards for one litre sportsbikes.

Modifications to the machine for World Superbike racing from the homologated model include different cam-shafts, pistons, valves, an enlarged radiator for extra cooling and the addition of an oil cooler and various other parts. The YZF-R1 has no rear sub-frame but incorporates a strengthened frame. The exhaust is unique, and was developed in partnership with Akrapovic. The standard fuel tank has also been replaced with a lightweight version with an increased capacity, within FIM regulations. The bike features the latest Magneti Marelli (MHT) electronic systems with over 30 sensors on the bike to monitor variables such as temperature and pressure of air, oil, water and fuel. The temperature of the brake disc and the tyre is also measured, as well as brake pressure, suspension travel, speed, acceleration, throttle position, camshaft position and crankshaft position to name a few more. The swing arm is also developed purely for the WSB race bike.

Many other details have been modified in parts and body design, a variety of carbon and titanium bits and pieces are used that make the Yamaha WSB R1 one of the most sophisticated bikes on the grid.

For 2011 development has been focused on further improved weight balance of the bike, resulting in again a further optimisation of fuel tank position as well as a power increase and further electronic systems improvements for traction -, anti-wheelie- and torque control as well as engine brake control.

Further regulation changes to the 2011 racing bike also include the use of more production parts such as fuel injectors, fuel pump and fuel regulator which also had an effect on the fuel injection mappings used in 2011.

2009 YZF-R1

Engine type:Liquid-cooled, four-cylinder, four-stroke, forward inclined, parallel cylinder, DOHC 16 valves
Bore and Stroke:78.0mm x 52.2mm
Carburation:Magneti Marelli electronic fuel injection (MHT)
Exhaust:AKRAPOVIC 4x2x1x2
Maximum power:Over 230bhp

Primary drive:Gear
Clutch:Wet, multiple-disc with slipper clutch
Final drive:D.I.D. Chain

Chassis and running gear
Frame type:Aluminium Deltabox
Front suspension:Fully-adjustable TRSP25 Öhlins inverted forks, 42 mm
Rear suspension:Braced aluminium swingarm with single RSP 40 Öhlins shock and rising-rate linkage
Front/rear wheels:Marchesini 3.50x16.5 inch front, 6.25x16.5 inch rear
Front brake:Dual floating discs, Ø 314mm
Rear Brake:Single disc, Ø 218mm
Weight:165 kg (in accordance with FIM regulations)
Fuel capacity:23 litres

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