A mere glance at the Panther M100 is enough to reveal its most striking asset. Seldom can a motorcycle engine have been quite as 'skewed' in its design as that of the M100. Its 'Sloper' motor did just that. It was tilted forward some 45°. If there was any concern about that interfering with oil circulation, it was unjustified. The M100 was nothing if not reliable.
The long stroke (100mm) of the 598cc Sloper served up an abundance of torque. That was handy - as many an M100 was pressed into side-car duty. As often as not, that came in the form of a 'Watsonian' single-seater. And if you were the one wedged snugly into the 'chair', the M100's top speed of 68mph was probably quite quick enough!
Panther were based in Cleckheaton, Yorkshire, England. No surprise, then, that their products were solid, rugged and dependable. Panther started out as Phelon and Moore (P&M). The first Sloper-equipped bike appeared in 1904. Others were to follow. The single-cylinder push-rod powerplant came complete with two air-cooled overhead valves. The dramatically-inclined unit was - and is - guaranteed to draw a crowd, among connoisseurs of classic motorcycles. The way in which the Panther's exhausts swooped down from the steeply-banked ports bordered on the exotic. And that from a motorcycle born and bred in Yorkshire - not a county traditionally associated with exoticism. This was at a time when a motorcycle and side-car were standard family transport. Above all else, then, the Panther M100 needed to get from A to B - and back again - with the minimum of fuss. That it accomplished ... and in style, too!