Yamaha R1 1998 (1998)

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The Yamaha YZF1000 R1 was a four-stroke, transverse four-cylinder motorcycle with a capacity of 998cc. The engine had a bore x stroke of 74 x 58mm and a compression ratio of 11.8:1, and was cooled by a liquid system with lubrication from a wet sump. The exhaust featured an alloy muffler, and the induction used 4 x 40mm Mikuni CV downdraft carburetors. The engine weighed 65.3kg and had a maximum power of 148.8 hp at 10000 rpm and a maximum torque of 11.0 kgf-m at 8500 rpm. The clutch was a wet, multiple discs, cable-operated system, and it had a 6-speed transmission with a final chain drive. The frame was made of aluminum with twin spars, and the suspension featured 41mm inverted telescopic forks and a truss-type aluminum swinging arm Monocross system. The front brakes were two 298mm discs with 4 piston calipers, and the rear brake was a single 256mm disc with a 2 piston caliper. The dimensions of the motorcycle were 2035mm (L) x 695mm (W) x 1095mm (H), with a wheelbase of 1395mm and a ground clearance of 140mm. The dry weight was 177kg, and the wet weight was 192kg with a fuel capacity of 18 liters. The average consumption was 17.2 km/lit, and it had a top speed of 277.2 km/h.

Technical specifications:

Make Model: Yamaha YZF1000 R1

Year: 1998


Engine: Four stroke, transverse four cylinder, DOHC, 5 valves per cylinder.
Capacity: 998 cc / 60.9 cu-in
Bore x Stroke: 74 x 58 mm
Compression Ratio: 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 Tyre 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: Aluminium, twin spar
Front Suspension: 41mm inverted telescopic forks
Rear Wheel Travel: 135 mm / 5.3 in
Rear Suspension: Truss-type Aluminium swinging arm Monocross system
Rear Wheel Travel: 130 mm / 5.1 in
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 Tyre: 120/70 ZR17
Rear Tyre: 190/50 ZR17
Rake: 24 degrees
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 Litres / US 4.7 gal
Consumption Average: 17.2 km/lit
Braking 60 – 0 / 100 – 0: 12.7 m / 36.7 m
Standing 1/4 Mile: 10.3 sec / 222.7 km/h
Top Speed: 277.2 km/h

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