OK, I have a question about the thrust line, and need some opinions. I think I need more downthrust on my Bobcat (pointing the engine towards the ground). It flies fine, but when I chop throttle, the plane noses straight for the ground, so I have to hold quite a bit of elevator to land.

Also, it does a strange thing as I climb out - the nose points up, and increases the angle of attack unless I hold some down elevator. As soon as I build up some speed, it starts flying normally - at least, until I cuts throttle, and bare down on up elevator. Is the angle of attack thing a trait of this model, or is it also related to the engine thrust line?

My CG is around 10.75" back, with an OS 46 (slightly underpowered), with a 11x6 prop. When I invert the plane, I need to hold quite a bit of down elevator for level flight.

Thanks, Mark