Quote:
Originally Posted by AZChandler
how did you get those 470-4's set inside the rudder horn??
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I'm trying to remember the part numbers off the top of my head...
My strategy went like this:
1) set 3 rivets at the top of the reinforcing plate(606)/spar(902)
2) set 3 rivets holding rudder control horn(405)/shim(917)/spar(902)/reinforcement plate(606)
3) set 4 rivets holding control horn(405)/spar brace(710)
4) set 4 rivets holding rudder rib(904)/control horn(405)/nutplate/reinforcement plate(606)
5) set 3 rivets holding rudder rib(904) and brace(710)
I had to make wise use of my bucking bars to reach all of the rivets and did most of the bucking through the hole in 710.
When it got time to rivet the 2 rivets holding the nutplate/spar/rib/reinforcement I had to get creative. I drilled a 3/16 hole in one of my bucking bars and put my AD4 squeezer die into it. This I placed under the spar to buck the head of the rivet. Then I took my back rivet set and placed it on the shop end of the rivet next to the nutplate. I used a mushroom set in my rivet gun and hit the tail end of my back rivet set to form the shop head on the rivets. It wasn't a pretty operation but it produced the nicest shop heads of the day. There just wasn't enough room to get any of my bucking bars in there and the back rivet set's collar did a good job of keeping the set over the rivet tail.
EDIT: One thing I just remembered. I clecoed the horn/shim/spar/reinforcement plate with the bottom rib in place and then riveted them. I then slid the bottom rib (904) from behind the rudder horn to keep it out of the way while riveting 405 and 710 together. Once those 4 rivets were in place I slid the bottom rib back in between the horn and spar for riveting.