Originally Posted by
JGalt
Thank you for your response. I didn’t measure incidence...guess I can look up how to do that. One thing I did do in that respect is try a very thin balsa shim between the wing saddle and trailing edge of the wing. It raised the back of the wing up very slightly. The flight characteristics were better with much less climb in the power off, glide mode. But I could hear a strange buzz sound when under power....almost flutter like...so I cut power and immediately landed. Again, thanks for your help.
John
Since the shim under the TE improved things, you definitely have an incidence issue. Do you have a handle on the various incidences and what they do? Wing, Stab and Thrust are the main ones.
Another way to "adjust" things would be to put down thrust in the motor. Simply add a couple of washers to the top mounting screws to shim that down. The idea being to raise the rear of the motor in relation to the front. However you have to do it in your particular application. Last you can put a shim under the LE of the stab. Depending how bad things are, I'd probably adjust all three. Start with the motor down thrust and work towards the tail.
A simple search for "incidence meter rc" will bring up a variety of tools for checking things. There's even a way to do it with a smart phone.