I think DH is correct in that you only want to put the 1.4 in a plane that has an AUW of 10 lbs or less. For instance, putting the 1.4 in a Lanier Edge would power the plane fine for general flying, but it would not do any kind of 3D.

I ended up putting a MVVS 1.6 in my H9 Cap and it will hover, barely. It flys great, but is in no way a 3D monster. The ZDZ 40 is better for that if you have to go gas.