Today I’m working on locating and drilling the wing rib attach angles (and a few spar stiffener angles). In the picture below you can see that I have already cut the angles and generally have them in the proper locations. The rivet layout for these angles is straight forward. I marked the centerline, drilled a […]
Fitting the Right Wing Spar Doubler Extension
My new parts have finally showed up! Yay! For the past few weeks I’ve been waiting for my wing spar doubler panels to arrive. These parts were overlooked when I originally ordered the RV-4 wing kit. The forward wing spar web doubler is part of the Sport Wing modifications, it’s also not something that you […]
Right Main Wing Spar Prep
Today I got started on the right main wing spar. As previously discussed on the left spar, the first thing to do is to locate all of the important items (front, back, inboard, outboard, etc…) Then I disassembled the spar into all the individual parts so that I can proceed with the mods, deburring and […]
Left Wing Rear Spar Fittings
After having deciphered the Sport Wing rib spacing it is now time to start drilling the wing attach fitting. Before we get to the drilling, I just want to add that the rib spacing dimension that I determined in my last post actually worked out really well. Again, when reviewing the HRII plans, the location […]