February 16, 2008 - Right Wing Tip

Long, long ago, in a galaxy far, far away, I had drilled the right wingtip to the right wing with #40. 

For mounting the wingtips, the instructions give you the option of either pop-riveting or screws/nutplates.  Two years ago I had bought the wingtip mounting kit from Cleaveland Tools.  It has #4 screws so I had to buy a dimple set for them, having had only the #6 and #8 sets.  A few months ago there was a thread about screw size and some had said negative things about the #4 screws.  My Snap-on screwdriver seemed to handle the #4 screws without problem, and since I already had money invested, I decided to stick with them. 

I started out by drilling all the wing-side holes to 7/64 to accept the #4 screws.  Then I deburred and dimpled. 

 
Way back when I had installed aluminum back strips and about 1/3 of the nutplates.  I finished up the rest of the nutplates. 
 
Nut-plate mania. 
 
First I drilled the holes, countersunk, deburred ...
 
Then I squeezed the rivets.
 

I almost forgot about the wingtip rib!  First thing tomorrow, I'm on it.
 
 
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