H9 Cap 232 1/4 scale?
BTW, while the really big engines (Saito 180, etc.) that are needed for hovering, etc., are indeed glow fuel hogs, my initial concern that this Saito 150 was going to drastically increase my fuel costs has been unfounded.
Overpower the plane if you must, but a good 120 will fly it just fine. This 150 is more engine than I need, and the only time it sees full throttle is on an extended up-line.
Steve