Sunday, September 24, 2023

Steps

A while back while the fuselage was still upside down and I was riveting ribs and supports in the baggage area, I neglected to put a small 3" aluminum strip in place that ties the corner rib to the baggage bulkhead.  It just lays on top of the corner rib and essentially extends it an inch or so, allowing it to be riveted to the bulkhead flange.  Since my riveting partner was out, I had to figure out a way to back rivet the 3 rivets per side by myself.  It turns out a floor jack holds a back rivet bar nice and solid.


You can see the strip in the picture below - barely noticeable, but the piece that is on top of the angled corner rib on the upper left corner of the picture.

Next it was back to the steps.  The 3/16" bit for my right angle drill arrived today, so I was able to drill the plastic block into the ribs, as well as drill through the step tube itself.  The block gets bolted to the rib, and once the step is prepped and ready for riveting, it also gets a long bolt through the tube.


The instructions just say to prime the steps, but since it's raw steel against aluminum, I want a thin layer of proseal between them as well.  I mixed up a small batch of the goop and spread it as thinly as I could.  I clecoed through every hole to hold it as snug as possible while it dries a little.  I'm taking a lesson from my fuel tank building days and choosing to wait at least 24 hours before I pull clecos and rivet.  It's just much less messy that way.