It was recommended to me by Kevin that I consider putting the holes in the seat ribs to run electrical wiring down lower on the rib.  The normal hole that is taken out to 5/8" is the tooling hole where the cleco is in the picture.  The problem with this appears to be that when the electrical wiring gets closer to the center of the fuselage, the control column and the wiring interfere with each other.  To prevent this conflict, I moved the holes down near the bottom of the rib.  I just picked a centralized location at the bottom.....

On select seat ribs, I marked for provisions to accept a DG-10 size adel clamp with enough clearance to the bottom of the rib, I could use up to a size DG-12 adel clamp.  Yes again, these will weigh slightly more than say a Ty-wrap base that is attached via double sided sticky tape, but then again, I won't have to worry about them falling off in two years.  Once I got one seat rib layed out the way I wanted for the adel clamps, I drilled the holes to size.  Then for all the remaining ribs, I clecoed them together (back to back) and then drilled out the same hole locations for the other seat ribs. 

• No, I didn't do this to all the ribs.  I believe I drill 4 of them for adel clamps.
• Yes, it is all about symmetry and craftsmanship.  I don't want it to look like a half baked plan....

I am also drilling all the seat ribs for nutplates.  The entire seating area floor will be capable of being removed for removal, replacement, repair of components without the need to drill out the rivets.  Yeah, it may add a little weight, but it won't be much.  Without a nutplate jig, I have to drill for the nutplates using a sacrificial nutplate and clecoes.

For the F-705J angle, you have to lay out a line of rivets to attach it to the back side of the F-705F channel.  Van's has you lay out of line of nine rivet for the F-705J.  Well, my rivet fan has provisions for ten rivets.  So magically, my F-705J angle has 10 rivets in it.  I measured in 1/4" on both sides and then spaced out the rivet fan to hit the first and last rivet holes.  This is one of the few places that neither the F-705F or the F-705J is pre-punched, so you can more or less do what you want here (within reason, of course).  I don't think that I would try to get by with three rivets here.

There are some particulars here on the F-705J to pay attention to:

• You can't just draw a line down the center of the angle to lay out your rivets.  This angle sits 1/8" above the F-705F channel.  If you center the rivet line on the angle, you won't be able to rivet the F-705J to the F-705F as your rivets will be very near the top of the bend for the F-705F.  Note the print shows that you lay out the rivet line up 1/4" from the bottom edge of the angle.

I just ran a #40 drill bit through the holes in the rivet fan and clecoed as I went.

Since the F-705J angle sits off the F-705F channel by 1/8", I found a 1/8" thick angle, and put it under the F-705J and clamped them both into place.

The real trick I found with the F-705J is that there is no real mention in the prints and in the instructions as to where to place the F-705J on the F-705F channel.  Since this angle holds the seat back in a particular position, it is kind of important that all the pieces and parts line up.  So what I did here is centered up the F-705K on the F-705F channel.  Then I centered / lined up the F-705J with the F-705K.  Clamped it into place and then drilled the initial holes of the F-705F to F-705J to #40.  After completing that, I went and drilled out all holes of the F-705F and F-705J to size #30.  Hopefully, everything will line up.

If you have followed my log entries, you know I had some problems with my original F-705G angles.  When I cut the new angles, I cut them them as straight angles and did not put the 1/8" taper on them as called out in the prints.  After I had drilled them to the F-705F channel, I marked the taper on the F-705G angle with a sharpie marker.  Then I set up the drill press to mill the edge of the angle to get the desired taper on the F-705G.  This worked really well, but I did have to take it pretty slow since the drill press is not a real good milling platform.  Anyway, I got the taper on the F-705G angles to match (almost perfectly), the taper on the F-705F channel.  I only had to do a very little amount of filing to remove the milling marks left by the end mill.

It seems like I am working on a lot of little things for the center fuselage and that it is taking me a long time to finish any one thing.  I am hoping with some of this prep type stuff (i.e.: drilling for nutplates, adel clamps, etc) that when this starts going together, it will be fast and furious.....