VVT: a load of ballbearings?
Developed on Suzuki’s Motogp bike since 2008, the new mechanical Variable Valve Timing ( VVT) system is a simple way of letting you have your power cake and eat it.
The system works by centrifugally activating ballbearings to fling out on the end of the inlet cam to change its orientation and intake timing. Suzuki reckon all this adds up to a motor that gives you chunky power in the lower reaches of the rev-range and a handy 5% boost in power around 10,000rpm.
Sitting reading this you might wonder if there’s a step in power, but the reality is that when you’re at 10,000rpm on a 200bhp superbike the acceleration, speed and windblast are so savage it’s impossible to detect any noticable power surge or hesitation with your eyes so far out on stalks!
Such is the speed of the new Suzuki you’re unlikely to reach 10,000rpm on the road, but on track the VVT motor offers one delicious uninterrupted flow of power from the first crack of throttle to the next frenzied gearchange.