RE: Custom patriot and webra 120
The only reason I bring up 16 and 17 inch props, is because I feel the Webra 120 is the wrong engine for this plane in the first place, based on props usually associated with this engine. If you want to spin 12 to 15 inch props, you probably need to be in the .61 to 1.08 range. The Webra 120 is a different animal. Since the plane apparently can't handle a larger diameter prop, it is likely overbuilt, which I think is what ewspears is saying. Without knowing more about the plane, I would guess this plane should have weighed in around 9-11 lbs, maybe less.