RE: Last weekend
The original Carl Goldberg Valkyrie was built with a 10 foot wingspan or 120 inches. When Joe Nall picks out their building projects they usually double or triple the size of an original plan. So the valkyrie they are building is double the size of the original which will make it a 20 foot wingspan. Here are pictures of the valkyrie at Joe Nall. The yellow finished one is the original 10' span. The one uncovered is parts of the 20' one.