RE: prop diametre ?
After watching the video from the last German Speed Cup, I wonder why so many guys are building low wing airplanes when a few of them almost crashed from bad hand launches. The black mid-wing airframe looks like a winner but having handlaunched pylon ships for years it's one of the worst ideas to have a low-wing, hand launched airplane. If it was faster, more guys would do it despite the difficulty. Is it just easier to start and tune an upright engine and have the tuned pipe go along the top of the fuselage over the wing (easier to make a smooth, aerodynamic cowl) or is it just because everybody else builds low wings so other people copy the style? A high wing is also generally more stable and a lot of those speed passes looked a little wild (obviuosly more trim and pilot issues than just high wing vs low wing). Just curious...?