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.
Triumph Bonneville 1977
Triumph 750cc Bonneville
Regarded as the quintessential British twin, the Bonneville was introduced in 1959 and continued in various forms until 1989. This 1977 model, with the purple tank, was seen in the movie "An Officer and a Gentleman".
Power: 50 HP @ 7,000rpm
Top speed: 111mph
Gears: five speed, left hand gear lever
Brakes: front single disc, rear single disc
Wheelbase: 1422mm (56in)
Dry weight: 201kg (443lb)
750cc Bonneville engine.
