Longstroke VS shortstroke.
Differently to four strokes, a short stroke is not higher
power/higher revving in a two stroke engine. The port area available in a
two stroke engine is proportional to the the cylinder wall area not the
head area. This favours long stroke/small bore The limitation is
friction/wear and inertial effects and so the best stroke/bore ratio seems
to be between 1:1 and 1.2:1.