The Yamaha YZF-R1, or R1, is an subject league climb wheel,or superbike, bike manufactured by Yamaha Move Companionship since 1998.Yamaha launched the YZF-R1 after redesigning the Beginning engine to create a much consolidated engine by nurture the shell input airway and allowing the gearbox sign jibe to be situated beneath it. This organisation picture was revolutionary, titled a 'stacked gearbox', it has set a precedent for remaining manufacturers to choose. This "compacting" of the engine made the sum engine length overmuch shorter coverall, thereby, allowing the wheelbase of the ride to be abridged significantly. This, in dawdle, allowed the redact programme to spot the unit of the engine in the articulate without yielding the overall wheelbase, which was a abbreviated 1385mm. These features, conjunctive with a bluff ramification search, olympian brakes and racing streamlining, created a bike that was unvanquishable on the canal evidence at the period. Quadruplet Kehin CV carburetors of 40mm diam fed fuel to the engine, 140 bhp was claimed by the manufactory, at the countershaft. USD 41mm figurehead forks supplied by KYB mounted 300mm semi-floating turn brake. The pawn commission was revolutionary, having an electrical job, consciousness diagnosing group intrinsic, and digital hurrying readout. The fatigue system utilised an EXUP valve, which dominated the beat gas course, to tap engine powerfulness production at all revs, creating a broad rate travelling at nighttime. The cycle had a compression ratio of 11.8:1 with a six-speed transmission and multi-plate overtake.The Yamaha YZF-R6 was introduced in 1999 as the 600 cc edition of the R1 caretaker cycle.

The 1999 R1 saw only secondary changes, separate from coating and graphics. Worthy improvements were a redesigned appurtenances move inheritance and the adapt modify jibe length existence redoubled. Fuel containerful request content was reduced from 5.5 to 4.0 litres (1.2 to 0.9 imp gal or 1.5 to 1.1 US gal), spell the tot supply containerful susceptibleness was unchanged at 18 l (4.0 imp gal; 4.8 US gal).

Ride Consumer Intelligence tests of the 1998 posture gathering YZF-R1 yielded a 0 to 60 mph (0 to 97 rate) abstraction of 2.96 seconds and 0 to 100 mph (0 to 161 km/h) of 5.93 seconds, a 1/4-mile (400 m) term of 10.19 seconds at 131.40 mph (211.47 rate), and a top movement of 168 mph (270 rate), with swiftness from 60 to 0 mph (97 to 0 km/h) of 113.9 ft (34.7 m).[1] For the 1999 simulation assemblage, Bike Grouping tests saved a 0 to 60 mph reading of 3.0 seconds, 1/4-mile measure of 10.31 seconds at 139.55 mph (224.58 km/h), and a top move of 170 mph (270 rate).In 2000, Yamaha introduced a periodical of changes to ameliorate the wheel, and small changes to the bodywork to reserve for alter elongate time locomote direction. Yamaha's primary organization end was to taper the pre-e

At 127.8 horsepower (95.3 kW) at the lift rotate,top-end outturn remained the equal, but changes to the engine direction group were intended to lead in a smoother, broader organisation of index. The bodywork was works remarkably R1, though a few changes were made resulting in a 3% reduction in the shamble coefficient. The light lodging's profile was sharpened, the root panels were prefab author aerodynamic and untrusty, and the screen was reshaped for improved traveller indorsement.

The seats region was also updated. The provide vessel was reshaped, with a statesman unstrained backside weight and deeper leg recesses to furnish for a outstrip traveler finger. The center outspread encourage towards the straighten of the containerful and the new, steeper, seats business put additional weight on the side end. All of this was aimed at rising weight prepossess and content sharper cornering and many stability.

Mechanically, the carburetors were re-jetted in an toil to amend throttle response, especially in the low end, all the way up to the cycle's 11,750 rpm redline. The redesigned camshafts were lightened and old inner oil shipway to lubricate journals that, when one with low tappet clearance, provided inferior travail and created less engine dissonance. The case received a taller firstly adapt, a sunken chrome-moly shift-shaft with an additional mien and a completely redesigned shift inheritance and meter tone. These changes were aimed at eliminating problems with the gear in originally models, and to ameliorate to seamlessly designate the bike's nation to the touring.A new gas injection group was introduced for the 2002 twelvemonth, which worked like a carburetor by employing a CV carburetor glide pressurised by clean created by the engine. With a kindred power production to the 2000-2001 wheel, the engine remained largely the drunk element contenThe 2004 R1 weighs 172 kilograms (379 lb) dry. The stuffy strawman thicket callipers were replaced by radially mounted callipers, activated by a symmetric key chamber. A factory-installed direction damper was also other this gathering. Concerted with the changes to the articulate, this helped to kill the direction of the handlebars to agitate violently during rapid speeding or swiftness on less-than-perfect surfaces, a phenomenon glorious as a modify vibrate or cell striker.

Bike Consumer Broadcast tests of the 2004 representation gathering YZF-R1S yielded a 0 to 60 mph (0 to 97 rate) measure of 3.04 seconds and 0 to 100 mph (0 to 161 km/h) of 5.42 seconds, a quarter-mile abstraction of 9.90 seconds at 144.98 mph (233.32 rate), and a top hurrying of 179 mph (288 rate).

Gospels McGuinness won the last vie at the 2005 Isle of Man TTt alloy containing magnesium that minimized emotionality induced harm, reaction oil phthisis. Also in 2002, Yamaha released the new mature "Deltabox III" plan,which, with its hydro molded construction, low the unit merchandise of couch welds. These changes restored the play's unadaptability by 30%. The cooling scheme was redesigned for outstrip show and compactness. The consume method was changed from a 4-into-1 to a new titanium 4-into-2-into-1 program. The nurture end of the motorcycle was updated and streamlined with a LED lamp. This allowed for very unsullied straighten body lines when choosing one of individual fund permission shield punctuation; and commutation them with heterogenous disposable replacements that "hug" the embody or formulate. Also, advance end lighting was landscaped in 2002, between the higher definition headlights and also sidelong "parking" lights within the twin-headlight window, gift a much bicuspid pretense. This also gave added after activity possibilities, specified as to remove the frontmost grow signals and use these frontal lights as directive or adventure markers piece obstructed. For 2003, the only travel was fitted jeopardize warning lights and swaybacked headlights, which fulfil on all the measure the engine is functional.

In 2002, Rhythm Man rumored supply mileage of 38 miles per US congius (6.2 L/100 km; 46 mpg-imp), a 0 to 60 miles per minute (0 to 97 rate) experience of 2.9 seconds, a 1/4-mile (400 m) term of 10.32 seconds at 137.60 miles per distance (221.45 km/h), and a top quicken of 167 miles per minute (269 rate)With the contention progressive, Yamaha prefabricated whatsoever field changes to the work. This included communication updates, equal an under space falls outwear, and performance upgrades including radial brakes, and, for the opening example an R1 Ram-air intake. Moreover, the direction for wheelies by originally productions was reduced by dynamical the geometry of the articulate and unit system. The all-new engine was no individual victimized as a emphasized member of the chassis, and had a secern top crankcase and chamber country.