Al,

Agreed, but understanding the basics of CG location is better than reading a sloppy translation or something printed in error. I have never used an on-line CG calculator, nor have I blindly set my cg based on what was printed in a manual. I use the "no further back than 1/3" rule of thumb at the root for basic unswept, untapered wings, typical on a trainer. But for everything else, I eyeball where the MAC is, mark a spot at 33%, and then see where this lies at the root. I think beginners can understand and do this rather than having to ask someone "where should my cg be?"

Kurt