I started the year with a Super Tigre .60 in my four star 60. I added an inch length and an inch height to the rudder per several past posts on the plane. It flew great. Then I put a Super Tigre .75 in it. It flew great. Then I put a Super Tigre .90 in it. It flew great. Each gave a little more verticle than the previous. All needed one ounce of weight to balance in the nose. Then I started removing weight and learning flat spins with it. At the end I had dropped the nose weight and added one ounce to the tail. It was a wild beast and did amazing flat spins. Then I had a severe case of brain fade. In an inverted flat spin I broke the rotation but forgot to break the stall before trying to fly out of it. With the power of the 90 I did make it out but ran out of air room when a secondary stall got me while I broke it away from the flight line. A 90 also makes a nice mess of a 4star. But I thought all the combinations work well in the plane. I had put a ST 90 in my small VectorFlight Extra 300 (also a .60 plane) and loved the totally unlimited veriticle it gave. The four star is such a draggy plane it will even run a 90 out of verticle unless you are always flying full power, which I only do on uplines. Pick a motor that you will use in future planes as well, depending on what size models you like. But from my experience power gets you out of alot more things than it will ever get you into.

bob branch