RE: Pushrod question
G'day
I recently built a Sig Somethin' Extra and the supplied plastic pushrods bound easily. They were smooth round tube type. I replaced the inner with the yellow inner from a set of Goldberg Golden Rods (the red smaller size) and everything worked well with this setup.
I don't use the small one inch threaded section that Goldberg supply. I use 12 inch threaded (on the end) Dubro pushrods (2-56 size). To stop the end of the yellow rod flexing where it comes out at the rear (it is usually about 3 or 4 inches long here) I cut a length of Dubro rod about 5 or 5 inches long then push it inside the yellow rod and then screw about half of the threaded section into the yellow tube. This gives me a nice stiff section which will not flex in flight which to attach to the clevis and the elevator or rudder horn.
At the other end I screw the threaded section of a Similar Dubro 12 inch rod into the end of the yellow tube and either bend it to a Z bend or use it straight with an EZ connector (the type with the Allen headed cap screw to secure the rod to the connector.
Does this make any sense?
Mike