I have looked back through some of the threads relating to the Joe Just/Jim Pierson UKEY stunt trainers to see if any of you guys that flew had problems with the O.B. WING flying high upright and low inverted. I asked about this a while back on the forum and got responses referring to the top mounted bell/L.O.'s above wing affected the vertical C.O.G., which I understand. We have built (3) of the JP. UKEY'S and all have needed OB tabs, However, when I looked at pictures of other UKEYS that were the JJ/JP type like ours, none that I could see had OB TABS. The wing alignment is OK- no twists or warps on our planes so what gives that yawl have no tabs, but we need gobs of tab!! TO HANDLE THE VCOG problem?
Doug