I'm currently flying the SF 4. What a gem of a kit to build! I have a GMS .61 in the nose with fixed landing gear. While not a powerhouse, the GMS gets me through the sky cruising at about 60% throttle.

What I appreciate the most about my SF4 is it's landing habits. It settles in and flairs for a main gear kiss better then any plane I've had with perhaps the SF 5 being the only exception I can think of. A great plane for any flying occaision.

Steve B
Arnold, MD