RE: Great Planes Yak 55
Yes. This is the exact setup I have been flying for about 6 flights so far. The airplane will hover on the stock motor, but just barely pull vertical after the hover. I stopped at six flights because the brushes were not making contact on the commentator (sp?) and I was loosing power. Recently repaired and look forward to practicing more 3D.
I get about 15 minutes of flight, so you might want to consider 2 or 3 1200 mAh batteries to get better flying performance with slightly less time (but maybe more batteries) Three 10 minute flights with a good airplane is better than two 15 minute flights with a heavy poor flying model.