Wednesday, July 27, 2022

Right Wing - Rear Spar Redo

I picked up the replacement rear wing spar last weekend, and today I got everything redone and swapped back onto the right wing.  It's amazing how much easier it is the second time around, mostly because I didn't have to spend hours scratching my head trying to figure something out on the plans (it helps having a completed wing to reference too).  Instead of going step by step through the instructions, this time around I took a number of liberties in the order I did things based on some lessons learned while finishing up the left wing.

First step was getting all of the holes final sized and match drilled where appropriate, then preparing everything for primer.  Priming only took a few minutes since it was 90 degrees outside and the primer dried pretty much instantaneously.  I went ahead and dimpled all of the rear spar flanges before I assembled anything.  Far easier than doing it when it's on the wing stand.


The doublers went together really quickly and before I knew it, I had the spar clecoed to the ribs and ready to rivet together.


Riveting went really well (all squeezed rivets).  There were a couple of holes in two rib flanges that were on the big size due to the original rivets being drilled out sloppily, so for those ribs I just drilled another hole and added an extra rivet to the spar.


And just like that, the skeleton is back on the wing stands.  At this stage before, I was staring down having to do a ton of work with skins, tanks, and the leading edge.  Having those pieces all done and ready to attach makes this part far more enjoyable!  I will go ahead and get the leading edge and tank temporarily set onto the spar just to get them out of the way, but next I'm going to shift gears back to the ailerons and flaps.  I'll wait to rivet on the leading edge and wing skins when I have help in a few weeks.