mike yes i know the 125 is 2.3 ounces more in weight but why buy a 91,100,115 when all four are with in 2 ounces of each other.

Why buy a 56, 62, or 72 when the 82 is very close in weight.

Also mike the 91 is lighter than the 100 by about .7 ounces.

my point is if getting a saito get the most power per weight, buy the 40, 82, 125 and 180 over the 150. yes the 220 is 7 ounces more but alot more engine over the 180.

wy8e said it best yes back in the day of early four strokes the two strokes where king, but pattern has change to flying slower and ata more consistent speed through the pattern big props do that.

The new YS 70 is very close if not beating the 60 two strokes with regular muffler. It will turn an 12x8 APC at just over 12,000

My saito 125's will spin a 14x10 APC over 11,000
saito 40 spins APC12x4 at 11,400 on 30%