Originally Posted by theafricankid
I am planning on scratch building either a Turbo Arrow IV or a Malibu Mirage (this will be my first scratch build). I would like some advice on which to build though. I have flown both (in real life) and I know that the Arrow is much more stable as well as slower and easier to control. Both aircraft are fairly straight forward as well. I am leaning toward the Arrow though. The other piece of advice I need is in regard to size. I have a O.S. .40 4 stroke engine that I want to use. Based on that what should the maximum wingspan be. The engine does fine on a 76.5" Piper Cub. Any advice anyone could give me would be wonderful!! Thanks!!
First of all, good luck on your project! Scratch building can be a big challenge and has its associated rewards. You may want to see if anyone has drawn plans for one of these types, it might be an easier path to your ultimate goal. To answer your question, though, it depends on whether you want your airplane to fly scale-like or to have gobs of excess power. Most 40-size moderately high-wing loading low wing monoplanes have a wingspan in the 55-65 inch range, and weigh from 5-7 pounds. I would go from there. Keep us posted on your progress, you don't see a lot of these low wing GA aircraft modeled. I really like my E-flite Beech Bonanza though, especially since I put a glow engine in it.