HS Spar Work

January 30th, 2021

Page 8-2: Steps 5-6, Page 8-3: Steps 1-2

I had time to speak with one of our local EAA Technical Advisors, Stephen Muehlberg. He gave me a ton of awesome tips and advice on how to continue working and improving my quality. It really spurred me on today, so I started up on the HS, since I’m waiting on the rudder skin, stiffners, and shear clips to come in. I riveted almost all of the spar doubler (minus the AN426AD4-6 rivets since I’m out of those) which really taught me alot about how to hold the squeezer so that I get zero impressions from the dies. At least with my squeezer and yoke combo, I have to slightly anticipate the downward tilt of the squeezer. And, not by much I should add. Just enough where it’s perceivable that the angle is off a tad, but once it squeezes down it straightens out perfectly. It’s looking good, but I did have to order some additional parts from Spruce. I got some additional AN426AD4-6 rivets, plus some rivet gauges, and I need to get a good low range torque wrench. I have one for my automotive applications, which normally stay within the 30-120 ft-lbs range, but I need something that will get me into the lower in-lbs and the lower ft-lbs range. I’ll have to look into that, possibly even get a digital one. We’ll see