Analysis of information sources in references of the Wikipedia article "Sport bike" in English language version.
sportbike: a motorcycle designed for aggressive performance, especially cornering
Wheelbase: The distance between the front and rear axle centerlines. This is a primary variable because it limits maximum acceleration, controls steering response speed, and has some stability effects. Intuition suggests that we use a long wheelbase for high-speed stability, and a short wheelbase for quick turning in lower speed going. Actually, that works in the reverse; at high speeds, gyro effects slow the steering down, so we need a short wheelbase to make the bike steer. High-speed circuits require taller gearing, which prevents the bike from wheelying much even with the short wheelbase. On lower speed going, a longer wheelbase is useful to allow use of more acceleration without lifting the front wheel. This is why big-engined Sportbikes have longer wheelbases.
SINGLE PURPOSE SETUPS:
A. If Braking Were Your Bike's Only Job To keep the rear tire on the ground and the bike steering controllably, major masses are moved rearward and lowered. Front suspension is stiff to carry percent of weight.[sic] Front tire is large for traction. Wheelbase is extended to prevent stoppies.
B. If Corner Entry Were Your Bike's Only Job Masses are centralized to speed roll and turning. Rigid suspension eliminates suspension delays. Front tire is narrow for quick response. Wheelbase is minimum to speed steering.
C. If Steady Turning Were Your Bike's Only Job Engine and rider are raised for cornering clearance, while suspension is supple to maintain maximum grip. F & R tires are equal sizes to carry equal loads.
D. If Off-Corner Acceleration Were Your Bike's Only Job Major Masses are moved forward but not lowered (cornering clearance is needed initially). Wheelbase is long. Front suspension is soft to exploit grip with very light load.
It's 20 years since the launch of the first 'hyperbike' – Kawasaki's awesome 173mph ZZ-R1100 which reigned world's fastest production bike through the first half of the 1990s until usurped by new hyperbikes such as Honda's CBR1100XX Super Blackbird and Suzuki's Hayabusa
With the 1983 RG250 Gamma, Suzuki was the first factory to deliver a true racer replica using race-bred technology to the public. The next step was to build a 4-stroke 400cc machine for the Japanese home market and a year later a 750cc machine, culmination to the Suzuki's racing experiences in the World Endurance, AMA Superbike and Championship. The GSX-R750 was first presented at the 1984 IFMA Cologne Show in West Germany. Although it was fully street legal, it was clear that it was built even to compete in the various Worldwide Championships.
