@Bunky.F.Knuckle, I was referring to what is listed, not what they may actually be. Stronger than advertised is a good thing. And, I have one, two weeks old with 20oz through it. Smooth as silk and running straight pipes, will run it a couple more times tomorrow then close it up and go fly. I started with the recommended break-in prop of 22x8 but there was not enough load for my liking. Now turning a 23x8, much better, far more than this bird needs. I have not had an RCGF engine that I do not like, but, I like the smoothness of the twins so much I am switching all airframes to one. I only have one more to go, a DLE 55 and it will get replaced with one of these.