Not too sure about that one. Present day Pattern is about 65% electric which is the heaviest of the bunch, followed by about 25% YS170 which is the next heaviest and only about 10% 140-180 2 stroke (myself included except with a gasoline engine), which is the lightest of the set-ups. Pattern people are extremely practical (finicky too) and gravitate to easy to run set-ups that are quiet, relaible and powerful. The vast majority of Pattern people screwed up 2 strokes left, right and center, learning how to set-up the pipes right.