Didg, here is a thread I did back in 2003 on the Rascal. Just a heads up to a possible problem. http://www.rcuniverse.com/forum/m_92.../tm.htm#920105

I did put a Magnum 52FS in after flying for a while. It was mostly because I was moving to a higher altitude and thought I would need the extra power, I didn't.

Magnum did make a 61FS, have one sitting in the garage waiting to be installed in a SkyRaider. I bought it back in 2002 when I got a Sportsman P51 that I lost on a rough landing. I think they stopped making them in 2002/2003 time frame.