16 – Top Skins Primed

After a 3 hour scuffing & degreasing session, it was time to prime the top skins, stiffeners and doublers. I decided to support the skins vertically to allow easier spraying. All done, so when the…




15-04 Wing Rear Spars Finished!

Inner Aileron Bracket Attachment – SB 16-03-28 I worked on the L & R spars at the same time, so once set for a given rivet size & location, the squeezer could be used for…


15-02 Riveting Aileron Brackets

Outboard Aileron Brackets Before the outboard aileron brackets can be riveted together, the bearings COM-3-5 have to be inserted into the W-1013A’s.  As advised in the manual, I used 7/16″ and 9/16″ sockets to press…


15-04 Riveting Rear Spar Doubler Plates

After all the prep comes the fun of putting it all together. There are lots of holes in the rear spar doublers that are not riveted at this stage … rib attachment holes, outboard aileron…


Rear Spar Priming

Of course priming begins by using Maroon Scotchbrite to lightly scuff, then by degreasing with Acetone.   Spraying The spars are quite long, so I ended up fitting them diagonally across my spray booth. The…


15-04 Rear Spar Machine Countersinking & Dimpling

The #40 rear spar flange holes are machine countersunk where they coincide with the doubler flanges. I clecoed the doublers in place in order to provide firm support for the countersink pilot, ensuring accurate machining….


15-04 Rear Spar Final Drilling

Some of the holes in the rear spar are final drilled #30, where they coincide with the ribs, W-00007B & W-1007C doubler plates. Also where the W-1013 Inner Aileron Brackets attach. First of all I set to and…


15-03 Rear Spar Doublers

The doubler plates need to be clamped securely in the correct postion on the rear spar and then match drilled. I used my cordless drill and the drill reflection to maintain perpendicular holes. Pushrod Holes…