In the craft designer, the coordinate system origin (0,0,0) is set to the craft’s center of mass. The coordinates don’t automatically update as you build, but DO update when you exit and re-enter the designer. What I’m wondering: is there a way, other than exiting and re-entering designer, to force a CoM coordinate update? Conversely, is there a way to lock the coordinate system and prevent updates?
make sure you set perfromance at 0km and not vacuum. i just talked to andrew about this last week. the designer default setting is at vacuum even if you create a new plane still have to change performance evaluation to sea level to see any changes. its should be switched to this because most crafts are probably launched from the surface of a planet. but yeah!