1988-89年Yamaha V-Max

One of motorcycling's legendary names, the V-Max has become a byword for explosive acceleration and power. First launched In the USA in 1984 (it wasn't officially imported to Britain until 1991) the V-Max quickly established a reputation for scary power, and equally scary handling. The engine had immense power and torque, more than sufficient to overcome the chassis and brakes. The engine is a transverse V-four, 16-valve, liquid-cooled design, with a unique intake system. Over 6000rpm, valves open in the inlet manifold, allowing each cylinder to breathe through two carburettors rather than one. This 'V-Boost' system supplies an extra burst of power and torque, transforming the V-Max into a screaming drag-racer, and boosting the maximum power to 104kW (140bhp), amazing performance for an early 1980s design.

The V-Max's extreme power would be enough to overwhelm some modern sportsbike chassis, but in a 1980s custom chassis it can be truly scary for the rider. The front disc brakes lack both power and feel while the narrow front forks and unsophisticated twin rear shocks quickly lose control of wheel movement in fast corners.

The double cradle steel-tube frame is too weak to handle all the power, and chassis flex further upsets cornering, causing wallow and weave whenever the pace is raised. Stronger brakes were fitted in 1993, but made little difference to the V-Max's chassis performance.

But in a straight line, the V-Max is an awesome performer, with enough power to spin its wide 150-section rear tyre away from a standing start. A five-speed gearbox and heavy-duty shaft final drive get the power from the engine to the cast aluminium rear wheel.

The design of the V-Max is unconventional in many ways. The fuel tank lives under the seat, and access is via a flap in the seat. An instrument console mounted on the dummy fuel tank houses the tacho, temperature gauge and indicator lights, while the chrome-plated speedo is mounted above the headlight.

• 您可能喜欢