retroman
New Member
Hey Folks:
Since the Japanese entered the motorcycle market they limited their offerings to bikes with short strokes and relatively large pistons ( oversquare engines) and larger valves (a larger piston allows more room for larger valves). These bikes showed up as high revving, high horsepower, overhead cam models that easily out performed the long stroke bikes from America and Britain. It seems as tho the Asian engineers just couldn't justify producing inefficient bikes when they knew how to make them perform better. However, here comes the NC (New Concept) bikes from the Asians with an under square engine (stroke longer than the piston is wide), overhead cams, and a high compression package. My question is: Why did they finally make a bike that doesn't "buzz"like their bikes of the past. My take on it is that they mastered the engineering of the 270 degree engine. That is that both pistons on the NC are moving at each ignition point. A standard engine has a piston set to change direction when the opposing piston is firing. Could I be correct on this OR, is there another reason?
Since the Japanese entered the motorcycle market they limited their offerings to bikes with short strokes and relatively large pistons ( oversquare engines) and larger valves (a larger piston allows more room for larger valves). These bikes showed up as high revving, high horsepower, overhead cam models that easily out performed the long stroke bikes from America and Britain. It seems as tho the Asian engineers just couldn't justify producing inefficient bikes when they knew how to make them perform better. However, here comes the NC (New Concept) bikes from the Asians with an under square engine (stroke longer than the piston is wide), overhead cams, and a high compression package. My question is: Why did they finally make a bike that doesn't "buzz"like their bikes of the past. My take on it is that they mastered the engineering of the 270 degree engine. That is that both pistons on the NC are moving at each ignition point. A standard engine has a piston set to change direction when the opposing piston is firing. Could I be correct on this OR, is there another reason?