Dynafocal, conical or DIY? Some engine-mount decisions are dictated by your choice of engine, but there’s more to it than that. Dave Prizio walks you through the process of mating engine to airframe.
Dan Parker aims to capture the world altitude record by flying to 31,051 feet in an aircraft he designed and built, and which weighs less than 200 kilograms. We checked in on him to see how things are progressing.