Heres my now single elevon setup. When i bought the plane as a half finished mess, these horns were supplied fitted so i assumed were standard graupner items (im sure someone will correct me if not the case). The original screws that passed through the elevon and formed the horn were brass so i changed these for stainless and used tread locker on all threads. I intend to add short CF tube stubs to the horn between the nut and white eyelet to add stiffness but i have no evidence that the setup isnt already stiff enough (the plane has never been pushed hard).
The elevon has hardwood inserts for the screws and 1/32 ply facing both sides in the horn area and completely glass cloth covered.
Dave
