Yamaha YZF-R1

Template:Infobox Motorcycle

The Yamaha YZF-R1 motorcycle, introduced in 1998, was the first significant motorcycle in the true litre class (1,000 cc) "handling arms race" between the Japanese Big Four motorcycle manufacturers (Honda, Kawasaki, Suzuki and Yamaha). When introduced, it took the class closer to a true racing motorcycle, and increased the handling capabilities.

History

Before the Honda Fireblade, the basic principle of performance motorcycle models was that as engine capacity got bigger, so did the bike and the length of its chassis. Hence, big motorcycles in the one litre class came in two formats - tourer or Harley Davidson like cruiser. The market opportunity lay in replicating the capabilities of a race bike in a road going machine.

Honda engineers took a 600 cc chassis and installed a 900 cc engine (bored out from a Japanese only 750 cc - the largest block they could get into the chassis), to create the CBR900RR Fireblade. It enjoyed strong sales globally from its introduction in 1992. This was likely due to its engine performance, as the early Fireblade was never the best handling, looking or riding package: it was almost a productionized parts bike, straight from the workshop.Template:Fact Honda, unfortunately, didn't develop the Fireblade very quickly.Template:Fact

The 1998 Yamaha R1 was the first production motorcycle built by any manufacturer to mate an actual litre (998 cc) inline-4 cylinder engine to a 600 cc size chassis.Template:Fact

Development

Yamaha saw the opportunity in developing their competitor model, using their unique copyrighted Deltabox chassis technology to create improved agility. To increase the agility, Yamaha redesigned the Genesis engine. In traditional inline-4 motorcycle engines the crankshaft, gearbox input and output shafts were parallel in a flat plane; in the R1 the shafts formed a triangle. This made the engine very short, allowing the wheelbase to be shortened, resulting in fast turning handling and an optimized center of gravity.

1998

A 1998 Yamaha R1 in a dealership.

The launch model Yamaha YZF-R1 was available in white/red or blue. In Europe the blue proved to be the most popular and was in very short supply, added to by early models being subject to a worldwide recall for a clutch problem. This bike has a compression ratio of 12.4:1. with a 6 -speed w/multi-plate clutch transmission.  Yamaha today describe the launch R1 as the true value of "Kando".

1999

Few changes were required, apart from paint and graphics, a redesigned gear change linkage and the gear change shaft length was increased for better gear shifting. Fuel tank reserve capacity was reduced from 5.5 liters to 4.0 liters, with the total fuel tank capacity was unchanged at 18 liters. A second worldwide recall to change a coolant hose clamp under the fuel tank which could under hard use come adrift affected the early 1999 models, with all 1998 models were all recalled

2000

Yamaha introduced a series of changes to improve the bike, plus minor changes to the body work to allow for better long duration ride handling. The R1 was an excellent bike to live with on short runs, but due to its quick handling was not a favorite longer run bike.

2001

2001 was the first year the R1 was truly beaten in performance numbers. The Suzuki GSX-R 1000 k1, weighed about the same but produced a bit more power and torque. This also marked the last year that Yamaha used a carburated engine in the R1. Subsequent R1's would employ a fuel injection system.

2002 - 2003

A new fuel injection system was introduced for the 2002 year, which worked like a carburetor by employing a CV carburetor slide controlled by vacuum created by the engine. With a similar power output to the 2001 bike, the engine was developed (larger bore, shorter str

A 2001 Yamaha R1

oke) to rev higher, faster and for longer. For 2003, the only change was the choice of colors. The previous years all h

ad a "Red" option, but this was replaced by  a black with red flames "Limited Edition" which cost an extra $100. Also in 2002, Yamaha released the newly developed "Deltabox III" frame, which, with its hydroformed construction, dramatically reduced the total number of frame welds, thereby greatly improving the frame's strength and torsional rigidity. The rear end of the motorcycle was updated and streamlined with an l.e.d. taillight, allowing very clean rear body lines remaining after chosing one of several common aftermarket modifications, such as removal of the turn signal stalks and stock licence plate bracet; and replacing them with assorted available replacements that "hug" the body or frame. Also, front end lighting was improved in 2002, between the higher definition headlights and also side "parking" lights within the twin-headlight panel, giving more aftermarket possiblities to remove the front blinkers and utilize these front lights as directional or hazzard markers while stopped.

2004

With the competition advancing, Yamaha took to a major development. This included style updates like an underseat exhaust, and performance upgrades including radial brakes and for the first time on an R1 Ram-air intake. Furthermore, the wheelie-tendency known from earlier productions is drastically reduced by changing frame geometry and weight properties. The all new engine (no longer used as a stressed member of the chassis) featured a separate top crankcase and cylinder block. The 2004 R1 produces a stated 172 hp at the crankshaft (excluding RamAir) and also weighs 172 kilograms, giving it a theoretical 1:1 power-to-weight ratio. Also newly added for this year was a factory installed steering damper. Combined with the changes to the frame, it helped to eliminate the tendency of the handlebars to shake violently during rapid acceleration or more so during deceleration on downgrade and less-than-perfect surfaces (aka "tank slapping").

2005 - 2006

In 05,06, Yamaha is now mated with a 180 hp at the flywheel. In addition, due to acceleration instability, the swingarm was extended 20 mm longer. Also, in 2006 the 50th anniversary of Yamaha racing in America, Yamaha released a Limited Edition yellow/white/black bike in original Yamaha racing colors. The LE features front and rear custom Öhlins suspension units developed by the people who work on the YZR-M1 MotoGP bike. Custom forged aluminum Marchesini wheels specifically designed for the LE remove nearly a pound of unsprung weight. A back torque-limiting slipper clutch and an integrated lap timer switch on the right handle bar round out the package making the LE more of a production racer. It has an MSRP of $18,000 and only 500 units made for the United States

2007

2007 Yamaha R1

An all-new YZF-R1 for the 2007 model year was announced on October 9, 2006. Key features include an all-new inline four-cylinder engine; going back to a more conventional 4-valve per cylinder rather than Yamaha's trade mark 5-valve genesis layout. Other new features are the Yamaha Chip Control Intake (YCC-I) electronic variable-length intake funnel system, Yamaha Chip Control Throttle (YCC-T) fly-by-wire throttle system, slipper-type clutch, all-new aluminum Deltabox frame and swingarm, six-piston radial-mount front brake calipers with 310 mm discs, a wider radiator, and M1 styling on the new large ram-air ports in the front fairing.

Specifications

	2006	2006 LE	2007
Engine
Type	998 cc, liquid-cooled, 20-valve, DOHC, inline four-cylinder		998 cc, liquid-cooled, 16-valve, DOHC, inline four-cylinder
Bore x Stroke	77 x 53.6 mm
Carburetion	Fuel injection, dual-valve throttle bodies with motor-driven secondary valves		Fuel Injection with YCC-T and Dick juice
Compression Ratio	12.4:1		12.7:1
Final Drive	#530 O-ring chain
Ignition	DC-CDI		TCI
Transmission	6-speed w/multi-plate clutch
Chassis
Brakes/Front	Dual 320 mm discs; radial-mount forged 4-piston calipers		Dual 310 mm discs; radial-mount forged 6-piston calipers
Brakes/Rear	220 mm disc w/single-piston pin-slide caliper		220 mm disc w/single-piston caliper
Suspension/Front	43 mm inverted telescopic fork w/adjustable preload, compression damping, rebound damping; 4.7 in travel	43 mm Special Öhlins inverted telescopic fork w/adjustable preload, compression damping, rebound damping; 4.7 in travel	43 mm inverted telescopic fork w/adjustable preload, compression damping, rebound damping; 4.7 in travel
Suspension/Rear	Single shock w/adjustable preload, compression damping, rebound damping; 5.1 in travel	Single Öhlins shock w/adjustable preload, separate high & low-speed compression damping, rebound damping; 5.1 in travel	Single shock w/piggyback reservoir; adjustable for hi-/lo-speed compression damping, rebound damping, spring preload
Tires/Front	120/70-ZR17
Tires/Rear	190/50-ZR17
Dimensions
Length	82.1 in		81.1 in
Width	28.3 in
Height	43.5 in		43.7 in
Seat Height	32.9 in
Wheelbase	55.7 in
Rake	24.0 °
Trail	3.8 in		4.0 in
Fuel Capacity	4.75 gal
Dry Weight	381 lb	383 lb	381 lb
Other
Warranty	1 Year (Limited Factory Warranty)
Colors	50th Anniversary Yellow/Black, Raven, Team Yamaha Blue	50th Anniversary Yellow/Black	Competition White (Europe), Yamaha Blue (Europe\US), Midnight Black (Europe), Charcoal Silver (US), Candy Red (US)
MSRP (USD)	$11,599 (50th Anniversary Yellow/Black), $11,399 (Raven), $11,299 (Team Yamaha Blue)	$18,000	$11,599 (Team Yamaha Blue), $11,699 (Charcoal Silver), $11,699 (Candy Red)

Critical Receptions

• "Even today the original Yamaha YZF-R1 is a sports tool to be reckoned with and updated Yamaha YZF-R1s are even more potent and easier to use too." - motorcyclenews.com on the 1998 Yamaha R1.
• "Typically the R1 is a front end motorcycle, meaning that every road detail is felt through the bars and it drops into a turn as quick as you like. Race track manners along with road motorcycle stability takes some beating and believing, but it does both with style." - motorcyclenews.com on the 2007 Yamaha R1.
• "This is like no in-line-four cylinder sportsbike ever produced. It’s simply sensational." - motorcyclenews.com on the 2009 Yamaha R1.
• "With its crossplane crank and irregular firing order layout, the 998cc inline-four-cylinder engine is almost vibe-free, despite its rumbling exhaust note, has the linear power delivery of an electric motor, the grunt of a V-twin and the free-wheeling engine braking of a two-stroke." - motorcyclenews.com on the 2012 Yamaha R1.
• "The way the new R1 snarls and growls as you blip the throttle off idle is darn right evil." - Neale Bayly, Motorcycle USA on the 2004 Yamaha R1.
• "Yamaha has built a reputation for building precision-tuned instruments (no pun intended), so it comes as no surprise that the six-speed gearbox feels exquisitely accurate. Each gear change is accompanied by a positive feel and its slipper clutch alleviates any error you could possibly make while downshifting. " - Adam Waheed, Motorcycle USA on the 2009 Yamaha R1.
• "The 2011 Yamaha YZF-R1 offers a riding experience beyond the ordinary V-Twin or Inline-Four engine configurations." - Adam Waheed, Motorcycle USA on the 2011 Yamaha R1.
• "Swinging a leg over the Yamaha, I was instantly reminded that the R1 is on the big size for the recent crop of superbikes. The wide front fairing makes it feel bigger than it is, and a wide seat and tank area further portray the portly feel. But on the street this really isn’t a problem. There is plenty of room to move around and the rider triangle doesn’t require frequent yoga sessions and trips to the chiropractor." - Justin Dawes, Motorcycle USA on the 2012 Yamaha R1.
• "The R1 offers a sensation that no other bike in its class has. Its engaging engine sound, combined with the analog feel, makes it an ideal sportsbike for enthusiasts." - Road Rider Japan on the 2011 Yamaha R1.

External links

• Yamaha YZF-R1 official site from Yamaha
• BikeHPS.com - UK supplier of BST Carbon Fibre Wheels fo YZF-R1 - info, pictures and reviews