I agree with you on that. It took me a while to find a good airframe for mine. I started with it in the TopFlite Staggerwing and it flew but power was marginal for a plane that heavy (21.5 lbs). I now have it in the Pacific Aeromodels Clipped Wing Monocoupe and it's a great match. Good power to weight ratio and a superb flyer. Here's a short vid of the engine running (I don't have any video of it flying yet). http://www.rcuvideos.com/video/Monocoupe-Radial-wmv

Sorry to all for the somewhat off topic post.