Thursday, July 11, 2019

Wings, Aileron Actuation (Part 4)

Continuing on from yesterday’s work.....

Shown below are the four AN490HT8P Threaded Rod Ends.  Those four Rod Ends have to be inserted into the ends of the Bellcrank to Aileron Pushrods fabricated in Part 3.  However, the Rod Ends are a little fatter than the opening of the Pushrods.  

So, to fix this “problem”, I put two 7/16 nuts on the Rod Ends (far right in the picture above) to protect the threads of the Rod Ends.  Then inserted the nuts into a drill press as shown below, turned it on and used the vixen file to remove material from the Rod End.  Once enough material was removed, I used 220 grit sandpaper to smooth out any rough edges edges created by the file (careful not to make it to smooth and prevent primer from sticking to it in a later step).  Worked out very well.  (I stole the idea from Shawn).

Here are all four of the Threaded Rod Ends after being trimmed as described above (you can see the shiny ends).  Also shown are the two Pushrods that the Rod Ends will be inserted into.....

.....and the Rod Ends inserted into the Pushrods.  This is temporary as holes will have to be drilled and the parts riveted together.

The next step is to drill the two holes in each end for the install of the AN470AD4-11.  These rivets will hold the Pushrods and Rod Ends together.....more on that during the next work session.