Yamaha YZF-R6

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Yamaha YZF-R6
Manufacturer	Yamaha
Also called	R6
Production	1999 - present
Predecessor	Yamaha YZF600R
Class	Sport bike
Related	Yamaha YZF-R1
Similar	Honda CBR600RR Kawasaki Ninja ZX-6R Suzuki GSX-R600 Triumph Daytona 675

Yamaha's YZF-R6 is a 600 cc (36.6 cu in) sport bike, first introduced in 1999, updated in 2001, 2003, 2006, 2008 and revised in the years in between. The 2007 model has a 393 lb (178 kg) tested dry weight and delivers a tested 104.8 hp (78 kW) at 14,200 rpm and 41.3 pound force-feet (56.0 N·m) at 11,500 rpm.^[1]

Contents 1 YAMAHA YZF R6 - HISTORY 2 Competition 3 YAMAHA YZF R6-2008 4 Controversy 5 Specifications 6 References

[edit] YAMAHA YZF R6 - HISTORY

When Yamaha introduced the YZF-R6 in 1999, it was a very big deal. Following hot on the heels of the R1 launched a year earlier, it gave the supersport class an almighty kick up the backside.

The R6 redefined the 600 class and, a year later, gave Yamaha its first World Supersport title. Showroom success followed. The bike sold by the lorry load to road riders and racers alike. For the former, that ‘must have’ appeal proved irresistible; for the latter, the expression ‘must have’ couldn’t have been more apt. At both club and national level, the bike was a revelation. Save for a few cosmetic tweaks, the R6 stayed the same up until 2003, when fuel injection replaced the carburettors, a die-cast black chassis replaced pressed aluminium, and a host of other changes made the bike a far more useful tool for the road. To many die-hard R6 fans though, the bike had become too civilised and gone the direction of Honda’s useful-butslightly-dull CBR600F, at a time when Honda was taking a bold step the other way with the super-focused CBR600RR. Yamaha’s success in Supersport racing started to fade along with sales. Then came the 2006 machine.

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[edit] Competition

For the 2008 model year, the R6 competes with other middleweight sport bikes that include the Honda CBR600RR, Kawasaki Ninja ZX-6R, Suzuki GSX-R600, and Triumph Daytona 675.

[edit] YAMAHA YZF R6-2008

MSRP*$9,799 (Cadmium Yellow w/Flames) Available from December 2007
$9,599 (Team Yamaha Blue/White) Available from November 2007
$9,599 (Raven) Available from November 2007
$9,599 (Liquid Silver) Available from November 2007
Key Features:

• Light, powerful and bristling with knowledge gained from years of racing, the YZF-R6 is the most advanced production 600cc motorcycle Yamaha—or anybody else—has ever built.
  
• The YZF-R6 was the first production motorcycle with a fly-by-wire throttle system—for flawless response under all conditions.
  
• YCC-I, Yamaha Chip Controlled Intake, introduced in 2007 on the R1, is now used on the R6 to vary intake tract length for excellent cylinder filling and a broader powerband. On the higher-revving R6, its benefits are even more pronounced.
  
• Slipper-type back torque-limiting clutch greatly facilitates braking/downshifting from high speed.
  

New for 2008:* Over 50 friction-reducing strategies have been employed inside the engine, including the use of wider crank bearings.

• Upgraded fuel injection mapping for the YCC-T dual-injector system complements the higher compression ratio for great throttle response and reduced engine braking.
  
• A magnesium subframe removes weight from the rear of the motorcycle for increased mass centralization.
  
• All-new frame takes handling to the next level, allowing more precise turn-in, greater corner speed, and tighter exits. Thicker headpipe-headstock and swingarm pivot area walls, and elimination of the frame crossmember, help achieve perfect balance.
  
• New swingarm has internal ribs added, and extruded section is now forged to work with the new frame.
  
• Revised outer fork tubes, a new lower triple clamp, and increased fork offset provide highly tactile front-end feedback.
  
• Moving the rider and bars forward and slightly lower enhances braking and turn-in performance. Clip-ons are also lower and re-angled.
  
• Front discs are 310 x 5mm instead of 4.5mm for increased cooling qualities.
  
• Increased fork height adjustability and rear ride-height adjustment range accommodate a greater range of riders and tires.
  
• Revised bodywork results in even greater aerodynamic efficiency.
  

[edit] Controversy

In 2006, Yamaha advertised the R6 as capable to running at up to 17,500+ rpm. This is 2000 rpm higher than the previous R1 model and it is the highest redline of a widely distributed production four-stroke engine – the Honda CBR250RR had a reputed redline of 19,000. Such a high speed is near to levels known only in Formula One engines, where valve springs stress problems lead to the adoption of pneumatic return at more than 19,000 rpm.^[2]

But it was widely reported that the 2006 YZF-R6's motor did not have this redline level and was closer to around 16,200 rpm, because of a tachometer error of about 9%. In February 2006, Yamaha admitted the bike's true redline was more than 1,000 rpm lower than advertised,^[3] and offered to buy back any R6 if the customer was unhappy.^[4]

[edit] Specifications

All specifications are manufacturer claimed.

[edit] References

1998-2002 model

Specifications Top speed 160mph 1/4-mile acceleration 11.2 secs Power 108bhp Torque 55ftlb Weight 169kg Seat height 820mm Fuel capacity 17 litres Average fuel consumption 43mpg Tank range 160 miles Insurance group 14 Engine size 599cc Engine specification 16v in-line four, 6 gears Frame Aluminium twin spar Front suspension adjustment Preload, rebound, compression Rear suspension adjustment Preload, rebound, compression Front brakes Twin 298mm discs Rear brake 220mm disc Front tyre size 120/60 x 17 Rear tyre size 180/55 x 17