Tuesday, November 22, 2022

Tailcone Stringers

There's not much exciting to show from the day, but I made quite a bit of progress.  I clecoed the entire tailcone together for what felt like the 30th time, this time so I could move on to drilling the J stringers.  A few of the stringers are just a tad long, but they fit well enough that I could get them drilled to the skins, and then later I will sand off a little of the ends (they just stick out beyond the skins slightly).  I had already drawn a line down the center of the stringers, so lining them up for drilling was as simple as keeping the line visible through the skin holes.  Once the middle and lower stringers were done (the upper stringers don't get put in place until the top skin goes on), I moved on to final size drilling all of the other holes.  I didn't quite get done before dog walking duties interrupted me, but am close.  I just have to finish reaming the bottom skin to side skin holes and match drill some new holes into the aft baffles.

As usual, by looking at the plans and reading through other builder blogs, I discovered a few other things I need to do that aren't mentioned in the instructions.  I need to prep and at least drill the tail tiedown bracket to the aft baffle (it won't be riveted on until after the skins, since it sounds like it gets in the way if you do it first), as well as make some modifications to the aft canopy deck rails that I drilled to the longerons.  The aft end of those get chopped and shaped differently to accommodate the tip-up canopy vs slider.