I put a 1100 NiCad in the tail, just forward of the hatch. My CG came in at about 5 5/8's or 5 9/16's and it flies so pure it's scary. Very little "pressure" on the elevator inverted, so must be just a little toward the tail heavy side, but still does great stall turns and downlines. I will start working on a throttle curve next, since the FX really has a little too much power. Mine weighs about 12.25 pound dry, so am less than 28 oz. wing loading, which ain't bad for a plane this size. Like I said, it flies so well I am selling three other, good airplanes, to make some room in my overcrowded garage.

I am still fooling with rates, expo and trim. Only have about 8 flights on it so far, the weather has been terrible here, but of course, just on the weekends, so it gets frustrating. I need a really good calm day to do the knife edge passes and set a little trim in the elevators. Can't really do that on windy days, because you are too busy fighting turbulence to really tell how much trim is needed. The way it flies, it won't be much.

Did you review the article here on RCU? I really appreciate when someone else has pioneered a project and shares it with you. Really don't know why GP's wants to make such a complicated and heavy tail gear assembly. I used the Sullivan, but may take it off and put on a big bird style, that looks more scale. The Sullivans are okay, but not very attractive. The single spring on them doesn't hold up very well on the long term, but are cheap enough and easy enough to replace.

Let me know how your trim flying goes and the % of mixes you end up with, then we can compare notes. Feel free to email me direct at [email protected]

Happy Landings.