Seems a bit odd to be listed as having 3.1 HP and only being able to spin a 14x10 at 9000rpm's. A saito 100 4 stroke at only 1.8 HP can spin that same prop at 9000.
The specs seem more like a 4stroke since the motor's practical rpm's maxes out at 9500 when most 2 strokes run up to 14000-16000.
Of course, its not a 4stroke so Im a little confused as to why a 2 stroke 120 would not be performing any better then a 120 4stroke. OS's FS-120S III 4 stroke can spin even larger props and its only 2.1HP.
Not sure what Im missing here, but it doesnt seem right.