Originally Posted by schmelme
Argh: it isnt the size of the crank it is the relationship of the rod pin on the crank to the center line of the crankshaft. The farther the pin is from center equals more stroke.
yess you sure got the point.. but still when bigger crank diametre, it will increase the distance of rod pin/crank centerline and automatically increase the stroke distance...
the short stroke produce more rpm, more top speed, but less bottom, always for onroad use, not last longer
the long stroke always got less rpm, less top speed but more bottom end and is great for offroad, will last longer... am i true..??