Fuselage: Baggage area.

Turns out I had to step into the airplane to complete this section.  And here is that momentous occasion recorded by the time lapse camera setup.

This section makes very liberal use of the LP4-3 rivet (Van's doesn't refer to these by their manufacturer part number - they are from Avex and that link includes a fun animation showing one being pulled).  And I mean very liberal.  To the tune of some 600 (see here for my list of the number of rivets used in each section of the plans).  Be sure to use the wedge tool as outlined on page 5-06.  This little gem avoids the curse of rivets showing pride when setting them in close quarters.

Since I've already acquired "riveter's elbow" (a.k.a., lateral epicondylitis or tennis elbow) from bucking the side skins solo, it's important that I reduce gripping items tightly, including rivet pullers.  A friend of mine loaned me a pneumatic rivet puller.  That thing is incredible!  How did I ever get along without one?  As a result, I picked up a cheap one from Harbor Freight.  Whilst I'm generally not a fan of the quality of their products, enough reports on VAF convinced me that it would fit the bill.  With Harbor's perpetual "20% off  any single item" coupon, after tax it rang in just under $35.  Score!

First the  F-01447-L/R baggage floors are cleco'd in place (left).  Then riveting commences (pictured is the loaner pull riveter, the Marson V-2).

Eventually you work your way through them all.

And everything gets done.

Now for some details...

The rivets attaching the F-01405G flap motor channel to the F-01405L bulkhead doubler are very tough to set because of the acute angle subtended by the two parts (relative to forward).  I used my no hole 4" deep yoke to set these.  The only way to make that work was by putting the shop head on the aft, visible side.  Whilst not aesthetically ideal, it was the best practical means to set them and move on.

Cutting the UHMW bushings to the proper size was easy enough by taping the stencil to the part, after verifying scale, and going to town with the bandsaw and belt sander.  These parts get bolted in but not with full torque.  Only until the nut comes down on the part, otherwise the part gets compressed and distorted which will prevent the flap torque arm from later fitting in it.  How do I know?  A later post will explain.

Many of the rivets around the step attach access area are very difficult to buck (left).  Use of my longeron yoke managed to squeeze most.  I then bought a $55 tungsten 12.5 oz bucking bar from eBay (right).  That managed to get all but one rivet on each side.  I don't have anything lying around that I can use to buck it.  A friend will loan me his "stubby" squeezer with a 1" yoke.  I suspect it's the same as this one from Avery.  He said, using that tool, that he was able to avoid having to use the lone CCR-264SS-3-2 called out for on each side.

Note:  If you're following my blog as part of your build, I humbly suggest you consult page 33-11 in the Rudder and Brake Systems section.  There are a number of bushings that need to be inserted under the baggage floors, as well as routing the rudder cables, that would be so much easier with the baggage floors not yet installed.

Fuselage: Baggage area. Seat back hinges.

There are a set of six seat back hinges composed from AN257-P3 hinge.  The plans call for each of the six to be 10.5 inches long.  Much like for the elevator trim tab hinge, a locating hole is started on one end 1/4" from that end.

Following match drilling the 6 hinge pieces to the F-01447-L/R baggage floors, it turns out that the final hole violated the edge distance requirement (not sure if it applies to LP4-3 rivets, but seems it would).  I determined that this occurred because I didn't factor in the kerf of my band saw blade, so the hinge ended up shorter than 10.5".

You'll notice in the picture below that I used the wrong hinge on my first attempt.  The bottom hinge is piano, whilst the top is my replacement AN257-P3 (primed).  I didn't realize this mistake until my replacement AN257-P3 arrived.  I thought Van's sent the wrong one, until I saw it was marked properly.  So, I'll have to order replacement piano hinge now.  It's inexpensive, but because it's 6', shipping is high.  I might wait to consolidate that into the finishing kit.

When I went to match drill the replacement hinge, rather than risk hollowing out the holes in my baggage floors with more match drilling, I matched drilled the AN257-P3 to the piano hinge.

As an aside, here is a nice tutorial on structural vs. non-structural breakstem rivets.  At this point, I'm not certain which family LP rivets are, but it seems to be one of those listed at the bottom of that tutorial page.