Timber,

Take a look at the other threads on this very subject through the RCU search engine. One thread that is good is on CAPs snapping.

The answer to your question about balance point is between 6.0 inches and 6.5 inches. The factory guys fly them at 6.5 inches per the VP R & D at Horizon. I also spoke with one of their flight demo people and he also flys the plane at 6.5 inches.

At our club we have had at least 6 to 8 of these ships. I have two of them now and have recently put one to sleep. Our experience is that they will snap at most any balance point if you use too much elevator throw.

What is interesting is that when you move the balance point back towards the center of lift the elevator becomes more sensitive and will cause the aircraft to snap more. When you move the balance point back you must reduce the low rate elevator throw. This reduces the snapping considerably.

The book calls for 5-5/8 inch CG and 1-1/8 elevator throws on low rate. My best CAP is currently at 6.5 inches and 3/4 throw on the elevators on low rate. The snaps are almost gone and the airplane is really responsive without "feeling" or acting tail heavy. There is no lead on the plane and this one has a YS 140L on it for power.

So, if you are at 6.0 inches now, try it. Watch the elevator rate and use expo. As you find your comfort level with the plane, move the balance point back more, remembering to watch the elevator throws. Again, the factory people state that the 5-5/6 inch balance point is very conservative.

I am interested at what balance point others are flying this plane. If you fly one, weigh in with your balance point.

Tim Adams