RE: Engine for OMP Edge??
Everything Razor said is right on! If you can swing it Klong you are welcome to go for a YS .63 or a Saito .72 but I like the 2-strokes. So for me I'd go for either the Irvine .53, the Webra .50 or the OS .50 SX. And then from there any strong .46 will also be perfect for the plane.