Bimota YB6 Tuatara (1990)

Bimota YB6 Tuatara was a limited edition motorcycle with only 60 units produced in 1990. It had a four-stroke, transverse four-cylinder, DOHC engine with a capacity of 1002 cc. The bike was liquid-cooled and had Weber-Marelli fuel injection with a digital ignition system. It had a maximum power output of 145 hp at 10500 rpm and a maximum torque of 94.1 Nm at 9000 rpm. The frame of the bike comprised two diagonal beams made of aluminum with internal ribbing, while the swing arm was also made of aluminum. The front suspension had Marzocchi inverted telescopic forks, and the rear suspension had a Marzocchi monoshock. The brakes consisted of two 320mm discs at the front and a single 230mm disc at the rear. The bike weighed 168 kg and had a fuel capacity of 20 litres. In terms of performance, the YB6 Tuatara had a top speed of 279.4 km/h and could do the standing 1/4 mile run in 10.4 seconds at a speed of 213.1 km/h. The name Tuatara came from a reptile in New Zealand, which was slow moving.

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Technical specifications:

Make Model: Bimota YB6 Tuatara

Year: 1990

Production: 60 units

Engine: Four stroke, transverse four cylinder, DOHC, 5 valves per cylinder.

Capacity: 1002 cc / 61.1 cub. in.

Bore x Stroke: 75.5 x 56 mm

Cooling System: Liquid cooled

Compression Ratio: 12.0:1

Induction: Weber-Marelli Fuel injection

Ignition: Digital

Starting: Electric

Max Power: 145 hp @ 10500 rpm

Max Power Rear Tyre: 127.3 hp @ 10600 rpm

Max Torque: 94.1 Nm / 9.6 kg-m / 69.4 [email protected] 9000 rpm

Transmission: 5 Speed

Final Drive: Chain

Frame: Two diagonal beams in section bar made of aluminium with internal ribbing. The cylinders are supported by plates bolted to the beams and the swing arm is made of aluminium

Front Suspension: Marzocchi inverted telescopic forks, 3-way adjustable compression and rebound damping

Rear Suspension: Marzocchi monoshock, adjustable compression and rebound damping

Front Brakes: 2X 320mm discs

Rear Brakes: Single 230mm disc

Front Tyre: 120/70 ZR17

Rear Tyre: 180/55 ZR17

Dry Weight: 168 kg / 370.4 lbs.

Fuel Capacity: 20 Litres / 5.3 US gal

Consumption Average: 16.5 l/100km / 36 mpg

Braking 60 – 0 / 100 – 0: 13.3 m / 35.9 m 43.6 ft. / 117.8 ft.

Standing 1/4 Mile: 10.4 sec / 213.1 km/h / 132.4 mph

Top Speed: 279.4 km/h / 173.6 mph

Road Test: In Moto 1990 Motorrad Moto Sprint

The Tuatara is a special version of the YB6. It differs chiefly by the introduction of fuel injection rather than carburettors. The name Tuatara comes from the name of a reptile in New Zealand, which moves exceptionally slowly.: