The Sixstroke Engine has extraordinary qualities. Capable of producing substantial torque at low RPM or peak power far greater than an equivalent poppet valved four-stroke, the development of Malcolme Beare's Sixstroke Engine is back on track.
Wood-Rotax Dirt-track racer 1985
Wood-Rotax
The Austrian Rotax four-valve OHC engine proved both robust and powerful, establishing an enviable reputation as the best motor of it's type available. The Rotax has been further developed and now powers both the BMW F650 (the first ever chain-driven BMW motorcycle) and the Aprilia Pegaso, along with a host of racing and roadgoing specialist machines.