Hi Guys,
I've read all the threads on the RCV engines and I guess I'm going to jump in with both feet. I purchase a VQ P61 off ebay a while back and I've been trying to decide on what make and size of engines to put on her. I went to Toledo the first week of April with my mine somewhat set on getting the RCV 120-SP engines to mount, but after talking to the people from KMP, they said the RCV 90-SP was big enough since it can swing the larger diameter and higher pitch props. So I have two on the way. I'm getting 16 in / 14 pitch props to basically run the engines and start out that way. As far as scale goes, the RCV 90-SP engines can swing a 13 in / 13 pitch 4 blade, but we are a long ways from that yet. Since the engines are low RPM, you can't run say a 16 in diameter 8 pitch prop because it will over rev. The guy from KMP said if you watch your RPM and keep it below I think 5500 RPM, you can run, but not wide open. Anyway, I'm waiting to get my engines to see how they mount, fit, look, run etc. We will see.
Bob