Two builders helped each other build RV-9As, each employing significantly different outlays of cash. The results are impressive in both cases, but for different reasons. They help us ponder the question as we build: What is something worth? By Marc Cook.
Heres one instance where the sound of silence (as in no engine noise) wont signal the need to start scoping out a place to set down. The Urban Air motorglider offers a compromise that makes the best of both worlds: fuel-efficient powered cruising and exciting powered-off soaring.