Van's RV-9A in Aurora

The Big Picture

The Big Picture
Flying! 8/28/2011

Sunday, October 11, 2009

5.5 hrs, 116 rivets
Started by fabbing reinforcing angles for the 920 armrests. Chose to use .125 3/4 x 3/4 angle. Realized that the corner needs radiusing to nest with the armrest nicely. Considered sanding for about 10 seconds, decided that the right way to do it was with a router. Got down the old router and killed all the spiders on it, cranked it up and decided it was nearly junk from sitting for 15 years. Plus my project built router table was covered in junk. And I've been wanting a new router table. So off to Home and Aircraft Depot we go! Decided on a low end table that included a 1.5 HP basic router. It worked great. Used my old carbide bits which don't seem to mind aluminium at all.

Then the Bro' in Law came over and helped with riveting. We cranked 'em out:
Finish riveting 970 to 915 ribs.
Finish riveting baggage ribs to 706 bulkhead.
Finish riveting 976 bottom skin to aft fuselage.
Start riveting aft edge of 970 skin.

After John left, spent a bit more time on the armrests, laying out and drilling the rivet holes.
Also fabbed some simple angle clips to support the ends of the reinforcing angle.
Was about to start drilling the angles to the bulkheads, but decided to stop there for the day and look at the plans. Glad I did. There's a cap that goes over the 904H bulkheads that has to be factored in. I'll leave the support angle clip drilling for later.