What wood have you used in those photographs? It's not ply, is it?
The tail is indeed 3/16 light ply . The weight of the four sections built now is 2.5 oz's this excludes covering with 1/16 sheet and hinges ( 4 ) + horn. The plans state all components should be as light as possible. This to me is light. Your thoughts appreciated The length is 21" and the width is 6-7"