simon_t wrote: ↑01 Dec 2021, 18:43
It is a thick walled ali tube, about 1/4” diameter, with a wooden dowel glued inside, then bored out to take a snake outer. The V-groove where the towline loop will go is then machined/filed out. The rod is just a bike spoke connected to the servo on the far side of the fuselage. There is local strengthening, to ensure the tow forces are carried into the structure - obviously the force can be quite high if the towline snatches.