
Tim Wrede's Sonex-B Build

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THE WING SPARS
![]() 8/31/2018: The plans are reviewed and the intial webbing is clamped together with the sonex spacing tool between the spars to ensure proper alignment. | ![]() 9/1/2018: Once the webbing is clecod in place, the drilling starts. Everything is pilot drilled at 3/32". |
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![]() 9/1/2018: The pilot drilling using the Sonex spacing tool and reference pilto holes on the skin is very helpful. | ![]() 9/21/2018: There are many different rivet types used int he wing spar. Each one was assigned a color code and an "F" indicated that the web needs to be formed for flush rivets. |
![]() 10/3/2018: The thicker solid webbing needed to be countersunk precisely. It came out pretty good and matches the plan's specifications. | ![]() 10/3/2018: Here I started installing flush solid rivets in the spar. Using the bucking bar as the flat source and a bolt and mallet to crush the rivet in place. |
![]() 11/27/2018: The first spar took me forever and this is why, I had a lot of trouble with the solid rivets. These all were drilled out and tried again. The second time around was better. | ![]() 11/27/2018: There are so many rivets to do, it is easy to get discouraged but you need to stick with it. |
![]() 11/28/2018: The rounded head solid rivets were easier to install with an air rivet gun and the SOnex bucking bar. |
![]() 11/30/2018: The round rivets were completed on the right spar. | ![]() 12/11/2019: The right spar is finally completed. Now to start the left one! |
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![]() 12/12/2018: The left spar is clamped and spaced using the Sonex spacing tool, drilling to commence in the spars. | ![]() 12/12/2018: All the pilot holes were successfully drilled through the spars. |
![]() 1/31/2019: Happy New Year. Took a break from building the spars to enjoy the holidays and work on the house. The auxiliary fuel tanks arrived today! | ![]() 2/7/2019: Ok break time is over and time to start getting back to the grindstone. Updrilling the pilot holes and getting ready for rivets. |
![]() 2/8/2019: Countersinking the spars, and the thick webbing. Getting ready for assembly and rivets. | ![]() 2/9/2019: Finally pounding solid rivets into the left spar. Make sure to download and use the Sonex spar supplement on their website. |
![]() 2/12/2019: Both spars are completed. They look fantastic! |
![]() 2/13/2019: The wing spars need to be clamped and aligned in order to drill out for later wing rigging. | ![]() 2/13/2019: The alignment was perfect although it was a little difficult to do this by myself. |
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![]() 2/13/2019: I was surprised at how long the wingspan is even with the overlap of spars. | ![]() 2/13/2019: Thats what she said...ok enough with the jokes, time for the scar part of drilling out the mounting holes to 1/2" diameter. |
![]() 2/13/2019: Well the bolts fit tightly, thats a great sign that I must have done it right. |