Originally Posted by
Appowner
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.
Thanks for the response Appowner. I examined the plane closely from the side and it looks like the leading edge of the
horizontal stabilizer is angled down. The attached image sort of shows it. The climbing under power is not a problem but the severe climbing when gliding (no power) is a problem. All of the down trim plus holding the elevator stick down is bleeding off precious flight energy. The image shows the elevator trim in neutral position. Perhaps breaking the glue bond and putting a shim under the leading edge of the horizontal stabilizer might work. Many thanks to you and the other's for helping.