Clapper, I have had Half Weight Radius from the get-go. Recently, I "saw the light bulb go on over a guy's head" when I said compactness rather than HWR with the compactness discussion following. Engineering terms like center of gravity (balance point), Moment of Inertia at CG (unmounted swing effort), Moment of Inertia at butt (mounted swing effort), and Half Weight Radius (compactness) seem to confuse/intimidate more than precisely explain/define. So, I try to use the "street terms" when discussing with a mixed group. I sincerely hope no one finds my word choices pedantic or smart a$$.

DDA