My Funtana has a Saito .72 in it with a wood Zinger 14x4 (wood is lighter and better throttle response than APC 14x4) running 30% Cool Power Heli fuel... hovers at 1/2 throttle and pulls out decent, not a rocket but plenty for 3D, not a 100 but sufficient. If I were to do it all over again I would go with a Saito .91 (2oz lighter than 100 and very little power difference). I am at 1107ft elevation for informational purposes too. My plane weighs 5lbs 8oz RTF (empty tank).