RE: Sundowner 50 Arf
i watched one of these planes today with a YS 1.10 absolutely zoom around the field today. the engine sounded like it's was at half throttle but the plane was scorching down the runway with low altitude passes. of course, the speed of the plane made the 4 cycle seem like it was at 1/2 throttle. very nice. another one with a 50 size 2 cycle was a lot slower.
david