I know alot of guys who use this engine over here. All of them have praise. A good friend of mine has four in a Lancaster which hasn't failed on him.

The design is perfect for hiding in the cowl, which was the idea behind the concept. Bags of power and can be trusted as most reliable 4 strokes. I know Clarence Lee in RCM did an in depth review and prasied it some time ago (2004?).

D.E.D.