Mark V

All of what you seems to be in line with what I think, they don’t need to be massive. I will try and put up an image (after I take one) so readers can see what I mean.

I am trying to understand why the design standards demanded lightning holes in thin ply in order to save the odd gram or two. The Percival Proctor Mk1 is a well designed aeroplane – but these are an abboration from the normal persival design techniques.

Its very interesting to speculate.

cheers