BB,

Don't bother with anymore replies. Doug knows he FU and is trying to get
a reply that he can bebunk.

The example of the plank supported at both ends is good for the Topping
lift at the end of the boom. It doesn't hold for the Solid vang. With a
solid vang one of the horses would have to be done away with.

Doug knows that. Its just to much for him to admit, as stated
originally, that a rigid vang cannot give the same lifting power as a
topping reinforced main at the end

Ole Thom.