Update on Katana 50re">
I originally had an OS 46 with the rudder servo mounted in the back. It created a very tail heavy bird. I have since changed to an O.S. .75, and the plane now balances with just a few ounces on the nose. Before the maiden flight, I reduced the endpoints on the ailerons by about 3/16 of an inch, and similarly reduced the amount of travel on the elevator by about 1/4 inch. Exponential was set at about 40%. The first flight went fine! I am used to flying sport planes, so it felt a bit twitchy. Also, the landing speed was a little fast.
For next week, I think that I will change the prop. I have noticed that a 13X5 works well on this plane. Also, I am going to increase the expo slightly. It is a great looking plane, and so gets lots of compliments at the field-like I am the guy who designed it
lol. Anyway, the plane that gave me lots of fits with the CG has worked out to be a good aircraft.