A veteran CD and Scale builder takes a hard look at Sport Scale—types of ships that perform well, those best for competition, documentation. You’ll never regret reading this article.By John D. PrestonAs seen in the January 1978 issue of Model Aviation.For most of us who have mastered the art of building and flying model aircraft, there comes a time when the flight of a new model becomes almost assured and flying for its own sake approaches boredom. At this point, many of us start thinking about the aircraft of our dreams; one which probably got us into the hobby in the first place. I'm…