Yamaha YZF-1000 R1
Yamaha YZF-1000 R1 | |
Manufacturer | |
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Production | 1998 |
Class | Motorcross |
Engine | Four stroke, transverse four cylinder, DOHC, 5 valves per cylinder. |
Compression ratio | 11.8:1 |
Top Speed | 277.2 km/h |
Ignition | Digital TCI |
Spark Plug | NGK, CR9E |
Transmission | 6 Speed |
Frame | Aluminum, twin spar |
Suspension | Front: 41mm inverted telescopic forks Rear: Truss-type Aluminum swinging arm Monocross system |
Brakes | Front: 2 x 298mm discs 4 piston calipers Rear: Single 256mm disc 2 piston caliper |
Front Tire | 120/70 ZR17 |
Rear Tire | 190/50 ZR17 |
Wheelbase | 1395 mm / 54.9 in |
Seat Height | 813 mm / 32.3 in |
Weight | 177 kg / 390.2 lbs (dry), 192 kg / 423 lbs (wet) |
Recommended Oil | Yamalube 10w-40 |
Fuel Capacity | 18 Liters / US 4.7 gal |
Manuals | Service Manual |
It could reach a top speed of 277.2 km/h.
Engine[edit | edit source]
The engine was a Liquid cooled cooled Four stroke, transverse four cylinder, DOHC, 5 valves per cylinder.. The engine featured a 11.8:1 compression ratio.
Drive[edit | edit source]
Power was moderated via the Wet, multiple discs, cable operated.
Chassis[edit | edit source]
It came with a 120/70 ZR17 front tire and a 190/50 ZR17 rear tire. Stopping was achieved via 2 x 298mm discs 4 piston calipers in the front and a Single 256mm disc 2 piston caliper in the rear. The front suspension was a 41mm inverted telescopic forks while the rear was equipped with a Truss-type Aluminum swinging arm Monocross system. The YZF-1000 R1 was fitted with a 18 Liters / US 4.7 gal fuel tank. The bike weighed just 177 kg / 390.2 lbs. The wheelbase was 1395 mm / 54.9 in long.
Photos[edit | edit source]
Overview[edit | edit source]
Yamaha YZF 1000 R1
1998-1999 Yamaha launched the YZF-R1 after redesigning the Genesis engine to offset the crankshaft, gearbox input, and output shafts. This "compacting" of the engine made the total engine length much shorter. This allowed the wheelbase to be shortened significantly, resulting in much quicker handling and an optimized center of gravity. The bike had a compression ratio of 11.8:1 with a six-speed transmission and multi-plate clutch.
Early models were subject to a worldwide recall for a clutch problem. Yamaha today describes the launch of the R1 as the true value of "Kando".[5][clarification needed] 2005 YZF-R1 instrumentation The 1999 R1 saw only minor changes, apart from paint and graphics. Notable improvements were a redesigned gear change linkage and the gear change shaft length being increased. Fuel tank reserve capacity was reduced from 5.5 l (1.2 imp gal; 1.5 US gal) to 4.0 l (0.88 imp gal; 1.1 US gal), while the total fuel tank capacity was unchanged at 18 l (4.0 imp gal; 4.8 US gal). A second worldwide recall was issued for 1998 and early 1999 models, to change a coolant hose clamp under the fuel tank which could come loose under hard use. Motorcycle Consumer News tests of the 1998 model year YZF-R1 yielded a 0 to 60 mph (0 to 97 km/h) time of 2.96 seconds and 0 to 100 mph (0 to 160 km/h) of 5.93 seconds, a ¼ mile time of 10.19 seconds at 131.40 mph (211.47 km/h), and a top speed of 168 mph (270 km/h), with deceleration from 60 to 0 mph (97 to 0 km/h) of 113.9 ft (34.7 m).[1] For the 1999 model year, Cycle World tests found a 0 to 60 mph (0 to 97 km/h) time of 3.0 seconds, ¼ mile time of 10.31 seconds at 139.55 mph (224.58 km/h), and a top speed of 170 mph (270 km/h).
Source
Three numbers said it all about
the YZF-R1 with which Yamaha stunned the superbike world in 1998. The
four-cylinder charger produced 150bhp, weighed just 3891b (176kg) and had an
ultra-short wheelbase of 55in (1395mm). That made it the most powerful,
lightest and most compact large-capacity sports bike ever built. And with
its aggressive styling, the R1 had the looks to match.
Beneath the sharp twin-headlamp
fairing, the R1 incorporated some clever engineering. Its basic layout was
Yamaha's familiar blend of 20-valve, four-cylinder engine and aluminum
twin-beam frame. But the R1 design team, led by Kunihiko Miwa, put the
six-speed gearbox higher than normal behind the liquid-cooled cylinders,
making the 998cc engine very compact. This in turn allowed the bike to be
very short while having a long rear swingarm, as used by grand prix bikes
for added stability.
Innovative crankcase design
The R1's new engine also
contributed with its innovative one-piece cylinder and crankcase assembly,
which was stiffer than the conventional design and allowed the powerplant to
be used as a stressed member of the chassis. This meant that the R1's
Deltabox II frame needed to be less strong, which helped explain how the
bike could weigh less than most 600cc sportsters.
The R1 engine was a spectacular
performer in its own right, never mind its contribution to the handling.
The bike felt light, racy and purposeful, with low, narrow handlebars, high footpegs, a firm seat and the smallest of windscreens. And such was the motor's gloriously broad spread of power that the moment its throttle was wound open, the R1 hurtled forward as though fired from a canon. It was not so much the fearsome acceleration when revved towards its 11,750rpm limit that made the Yamaha so special, nor even its 170mph (274km/h) top speed. Where the R1 engine really scored was in its flexibility, which ensured that smooth, addictively strong acceleration was always available, making it a supremely easy bike to ride very rapidly indeed.
And the R1's handling was equally
impressive. The bike's combination of light weight, rigidity, racy
dimensions and excellent suspension gave it the feel of a much smaller
machine. This was an open-class bike that handled better than any 600cc
sportster.
The Rl was not infallible, and like many short, light, powerful bikes it shook its head under hard acceleration over a series of bumps. But most of the time the Rl just felt so responsive and controllable that its rider could seemingly do no wrong, despite the bike's sheer speed. Its front brake was a match for that of any rival, combining fierce power with plenty of feel. Detailing was generally good, notably the instrument console, which combined a digital speedometer and traditional analogue rev-counter with the welcome addition of a clock. Despite that useful touch the R1 was not a bike for everyday use. It was uncomfortable for its rider at slow speed, and hopeless for a pillion at any speed. It was so fast and furious that even some experienced riders found their needs better met by a slightly less focused alternative.
But for those who valued pure performance above all else, the YZF-R1 was simply sensational. Even before it had turned a wheel in anger, those figures for power, weight and wheelbase had made Yamaha's new star the world's best superbike on paper. On road and racetrack alike, it fully lived up to that promise.
Make Model | Yamaha YZF1000 R1 |
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Year | 1998 |
Engine Type | Four stroke, transverse four cylinder, DOHC, 5 valves per cylinder. |
Displacement | 998 cc / 60.9 cu-in |
Bore X Stroke | 74 x 58 mm |
Compression | 11.8:1 |
Cooling System | Liquid cooled |
Lubrication | Wet sump |
Engine Oil | Mineral, 20W/40 |
Exhaust | Alloy muffler |
Induction | 4 x 40mm Mikuni CV Downdraft carburetors |
Ignition | Digital TCI |
Spark Plug | NGK, CR9E |
Starting | Electric |
Additional | Engine weight 65.3kg 17mm diameter gudgeons |
Max Power | 148.8 hp / 109.5 kW @ 10000 rpm |
Rear Tire Power | 138.8 hp @ 9600 rpm |
Max Torque | 11.0 kgf-m / 108.3 Nm @ 8500 rpm |
Clutch | Wet, multiple discs, cable operated |
Transmission | 6 Speed |
Final Drive | Chain |
Gear Ratio | 1st 39/15 (2.600) 2nd 35/19 (1.842) 3rd 30/20 (1.500) 4th 28/21 (1.333) 5th 30/25 (1.200) 6th 29/26 (1.115) |
Frame | Aluminum, twin spar |
Front Suspension | 41mm inverted telescopic forks |
Rear Wheel Travel | 130 mm / 5.1 in |
Rear Suspension | Truss-type Aluminum swinging arm Monocross system |
Front Brakes | 2 x 298mm discs 4 piston calipers |
Rear Brakes | Single 256mm disc 2 piston caliper |
Rim Front | 3.50-17 |
Rim Rear | 6.00-17 |
Front Tire | 120/70 ZR17 |
Rear Tire | 190/50 ZR17 |
Rake | 24° |
Trail | 91 mm / 3.8 in |
Dimensions | Length 2035 mm / 80.1 in Width 695 mm / 27.3 in Height 1095 mm / 43.1 in |
Wheelbase | 1395 mm / 54.9 in |
Ground Clearance | 140 mm / 5.5 in |
Seat Height | 813 mm / 32.3 in |
Dry Weight | 177 kg / 390.2 lbs |
Wet Weight | 192 kg / 423 lbs |
Fuel Capacity | 18 Liters / US 4.7 gal |
Consumption Average | 17.2 km/lit |
Braking 60 - 0 / 100 - 0 | 12.7 m / 36.7 m |
Standing ¼ Mile | 10.3 sec / 222.7 km/h |
Top Speed | 277.2 km/h |