Sig Sbach XA41 300 ARF

The full-scale XA41 (also known as the Sbach 300) was designed for the highest levels of aerobatic competition. Its all-composite airframe makes it extremely rigid and lightweight, while a meaty 324 hp engine makes it go. It’s not just a pretty face—this aircraft can back up its broad-shouldered, aggressive stance with gullet-emptying aerobatics.

Build the Parallax 2014/05

I recently set out to expand my understanding of asymmetric aircraft. When I began this quest for knowledge, I had the classic examples of asymmetry in mind—namely the Blohm und Voss Bv 141 and Rutan Boomerang. Both of these designs are proven successes, yet their unconventional configurations make one question how they can even fly in a straight line.

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