You guys have a good thread going here. Very informative. I really appreciate the generous guys that seem to be attracted to RC - always willing to share to help other modelers.

Just to throw in my 2 cents - As you may remember, I started the trouble by hanging a very old (but rejuvenated) YS 1.20 on the front of mine. But this plane will perform very well with a variety of engines. For the guys that will be buying a new engine, I understand why you ask so many probing questions and challenge other opinions. You want to spend your money wisely - and in the end, you want to get something that matches your flying style. So guys cut them a little slack.

If you've got a good 90-1.20 4 stroke laying around, no need to go out and spend your modeling money on something that will overpower this plane. I've seen planes so overpowered that they had to be idled down so low to keep the plane from rolling at idle, that they nearly shook the plane apart. Sometimes the extra weight actually degrades the performance of the plane. Trust me, a good 90 to 1.20 is plenty.

Today I made 3 flights on the Yak Pro, the last 2 of which I switched to an APC 16X6. It did make quite a difference to the good, particularly in the hover. It locked in and stabalized much easier. Previously, I was using an APC 15X8.

I've included a few pictures for the guys starting to position radio & batteries. I'm using a single 1500mAh NiCad pack 6.0v - HiTec 645 mg all around. - Futaba 9C- MPI switch