>This did stiffen the surfaces to an acceptible level, >but there was still some flex right where the rod bends >45 or 90 degrees. An all carbon rod would be ideal!
Uh.. actually, a carbon rod would be horrible. Unidirectional carbon has a puny shear modulus compared to steel, even aluminum. The stiffest solution would be a steel tube between the servo and the hinge-line bearing -- the biggest one you can fit. SmallParts has thinwall hypo tubing up to 0.238" diameter. Steel rods could be soldered into the tube at each end to use the standard hardware, with a suitable steel or brass sleeve for a concentric fit if necessary. Someone else mentioned using hardened RDS torsion rods. This is not a solution, since hardening has little or no effect on the stiffness of a metal. It only increases its strength. - Mark RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
