Dave ... I am looking at the prop sizes to give me an idea of the engine's power. I know the YS160 costs a lot here, almost the price of a good gasser but after trying out a YS110 I am sold on the idea of owning one of your big bore. I am not getting it for a 3D ship but rather some 1/4 scale plane that will weigh about 10 lbs - 12 lbs max e.g. Carl Goldberg SU26MX, Carl Goldberg Ultimate or Dave Patrick Extra 330L. I am more keen on the 160 than the 140 as both are about the same in dimension. Thanks.