How To Build a Sonex Main Wing Spar

In this video I build my left main wing spar. I had already completed the right one with no issues.
However, the Sonex factory messed part of the pre-assembled left spar. There were two solid rivets where no rivets should have been and two holes where two solid rivets should have been. I don't think this is a big issue, but I'm still waiting to hear back about what to do with it.
#sonex #sonexaircraft #wings #wingspar #experimentalaircraft #homebuilt #homebuiltaircraft

[@pandyseven]

Great presentation Dan

[@dan_der_flieger]

Thanks Andy!

[@abmbarry]

Mmmm You don't use a Torque Wrench?

[@dan_der_flieger]

With AN3 bolts, their torque rating is 1.6 to 2 ft-lb of torque and, at the time I recorded this video, I didn't have a torque wrench that was accurate at that setting (I did try with the one I had, but it wasn't consistent and I didn't trust that the nuts were torqued properly). I have since purchased a light weight torque wrench that can accurately measure down to 20 in-lb (1.66 ft-lb).