ORIGINAL: Freddy
Had a few more flight attempts but my new YS is acting up, all deadsticks after a few minutes. I did move the CG aft by moving the battery aft of the wing tube on the vertical tank support, lightened spinner backplate, and 1 oz weight in the tail, so CG is probably just aft of the wing tube aft edge. Needed less down in inverted and all the tracking including up and KE still great. Maybe this will affect my spins/snaps? Too soon to tell. I PM's Bryan Hebert but no feedback yet.
One thing Hebert will tell you is you don't move the CG just to make elevator "feel" right for inverted flight. That's what God invented exponential for. Moving the CG too far aft on an Hebert design can cause some very bad spin and snap characteristics, and the rolls won't be near as pretty. He's actually in the process of re-trimming the prototype (since he was kind enough to lend me the airplane he was originally going to fly this year), so his mind is definitely on this plane at this time, and he will probably chime in here. I know he added tail weight to his this past weekend, but most of his radio gear is right at or in front of the wing tube with the exception of the elevator servos.