Twinman's Ball joint remover



The problem with the VQ P-38 wing and the fowler flaps is the connection of the linkage from that main body to the outboard flap mechanism. It is a small ball connector that my large fingers cannot reach, and I worry about breaking the linkage with a needle nose pliers. With a little imagination I think I have found the solution.
 

Take brass tubing (I believe a stronger steel thin wall tubing would be better, but this works for now) of 11/32” and cut out a slot .115” tall using a dermal tool half way through the tubing. The bottom must have an opening .150” to go around the ball joint. A very slight radius in the center of the opening toward the long end of the tool makes fitting over the ball joint easier.


 

Side view of the slot for the ball joint.


 

Take brass tubing (I believe a stronger steel thin wall tubing would be better, but this works for now) of 11/32” and cut out a slot .115” tall using a dermal tool half way through the tubing. The bottom must have an opening .150” to go around the ball joint. A very slight radius in the center of the opening toward the long end of the tool makes fitting over the ball joint easier.


 

Get a wooden dowel 3/8 inch. Chuck up in drill. Get small coarse sandpaper and hold the dowel with the drill turning to reduce the dowel to .300” to slide into the brass tubing. Drill 1/16” hole into the end of the dowel. (Must drill or dowel will split) and screw in an Allen screw with wood threads into the center. This is the “Punch” for the puller.


 

Here is shown the dowel inserted into the tubing. The jaws go under the ball joint to hold it and the dowel is pushed down to pull the ball joint.


 

Here is the fowler flap linkage inside the outboard wings and the hard to reach ball joint.


 

Slide the tool, with the dowel retracted over the ball joint, push down on the dowel and the jaws hold the outer part of the ball joint and the Allen headed bolt pushes the ball joint apart without stressing the arm or joint.

Joint removed.


 

Now you can modify the other end of the tool with an opening of .520” and jaws as similarly described. Modify the other end of the dowel with a small concave hole, and the puller becomes the ball joint installer.

By: Twinman
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