Originally posted by jharkin
The saito, being a 4-STROKE, will have less hp but will probably turn a bigger prop and be quieter.
Not quite, my Moki 1.8 turns an 18x8 Pro Zinger around 8300 RPM on FAI fuel, tuned pretty rich. The Saito 180 is not even in the ballpark with it on 18 inch props.