U Can Do 3D
Hey Eric,
I've got pretty much the same setup as you, same engine etc. I've tried a 14x6, a 15x4W and now I'm about to try a 16x4W. My CG started at 4 7/8 and I'm currently at 5 7/8 and it's not quite enough to get a good hover or waterfalls. In hover it still falls out nose heavy. Waterfalls catch at 270o. So I'm moving the battery farther back. For you to get 6.25" where do you have the battery mounted? At 5 7/8 I'm about to formers back from the last former in the radio compartment (I cut a hole in the bottom of the fuse). One thing I do notice is it doesn't seem to matter if I move the CG back the stability of the plane doesn't change, no pitching or anything. Flys very stable!
David