Originally Posted by
speedracerntrixie
Have you measured your stab and wing incidences? My first hunch is that you have too much positive incidence in the wing. Usually climbing while under power is a common trait with a powered sailplane but is influenced by incidence, airfoil and CG. One of my powered sailplanes took a mix to add down elevator with throttle. Once power is off elevator goes back to neutral.
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