all i need now is the balls to try it
The tail fenestron, blades and sliding guide tube are carbon, the shafts are titanium. The digree of movement to tension the belts has minimal effect on the c of g which remains within limits with up to two inches of tail movement. The belts, blades,and linkages have undergone several hours of full load and movement. to date no problems. I thank you all for your replies, and of course will post a vidio when i have succesfully flown the machine. May i quote Otto Lilienthal It is easy to invent a flying machine, more difficult to build one, to make it fly is everything