HI Ty,

Of course, the connection was a washer soldered onto the end of the pushrod *back in the day*.  That needed close to zero clearance, as you know.

Putting *scabs* over the area where the ball link needs clearance is probably the least obtrusive way to do it.  They can be smoothly blended into the fuselage side.  I also cut a vertical slot to access the adj. elevator horn.

Hellow All  I think Central Hobbies has a clevis made out of aluminum that is both strong and light. They had them in four sizes. The pin is held in place with a screw and also came in diff thred sizes also.

TY,
This is a major problem with many of the Classics. While I have used a Ultra Hobby clevis in my "Top Hat" that's is a modern airplane with lots of room built in to the design''

The "Carousel" that I build had about 1/4" clearance for controls inside the rudders. With the high tail, it made adjustable items next to impossible. For clearance I cut a curved slot in the rudder sides tha follows the horn travel, to clear the horn and Hayes clevis, and then covered the slot with silkspan. That gave just enough clearance, and after it was painted you couldn't see it.

The "Sea Vixen" also has horrible clearance problems in the aft area of the rudders, where the horn has to travel. I have the controls closed up now, but I will be opening the tops of the booms again to try to get smoother operation, since I am not happy with it. This has been the most challening project I have ever done. but for that reason it is also the most interesting project, because it is such a big challenge.

I am assuming that your "Knight" will also have to have a large braced "Z" in the pushrod to get up to the high "T" tail.

Ty,

Sheeks' Knight? The T-Tail beauty?

Remember the brace wire to limit bending in the elevator pushrod, and use a fairlead or two on the straight section to make sure.

The geometry of the pushrods is a trip, no?

I basically started that only when we went to ball links and adj. elev. horns.

Before that I just used the soldered washer.

Bill <><

Oops!  I must be dangerously low-tech.  I still use soldered washers.......