The theory was that on the power stroke, the piston rod was pushing more straight down on the crank-as opposed to being at an angle. Cylinders were offset, positioned slightly forward above the crank. They employed an interesting design element in their engines that significantly influenced the nature of the machine’s power delivery. In 1974 Bultacos were right foot shift, making the change to left side in 1975.
Having great torque allowed the rider to rely on brute power to get them out of corners a gear high, thus requiring less shifting. Despite the limitations of suspension travel they managed to be relatively stable (for the period). In corners, their ability to either pivot in soft or hard soil, or to rail berms with equal aplomb, made them extremely accommodating for a range of riding styles. They had shapely, extremely thin fiberglass gas tanks-so thin that the head fins stuck out on either side. In the first round of the World Championship of motocross in 1973, an unknown Jim Pomeroy debuted with a spectacular victory over reigning champions.īultacos (or “Buls” as they were affectionately known) a beauty all their own. The best story of the Bultaco Pursang was starred by a barely 20-year-old pilot, at the controls of a near-production Mk6. Pictured before and after I completed a total restoration of this numbers matching Bultaco MK6 M101 175cc Pursang. 7MM Remington Magnum lightweight hunting rifle.