To get a bucking bar on the rivets in the QB wing is tricky. The guy with the bar needs a LONG arm. The foto in the builders manual shows 2 guys riveting the TOP skin, and the guy with the bar is standing between the TE Ribs and the Rear Spar. hmmm... Any suggestions? Rolly
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Bucking Rivets in the QB Wing
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Rolly, have all the skins together lifted up at the aft side with a piece of PVC, a 2x4, or something. Access is not too hard like that. Then lower the skins as you move aft. Really does not require a long arm if done like that. On the LSA wing like yours - the area where the flap goes can not be totally accessed for bucking rivets. The last few rows will have to be riveted with SS pops. Call me if I can help Rolly. Mark
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Rolly,
I was able to get the last few rows on the Bearhawk using a longer bucking bar than I normally use, inserted through the rear spar lightening holes.. I even taped the bar to a small board for a couple of rivets. Just used short bursts with the gun. My hands would not fit but I could get enough of my fingers to manipulate the bucking bar.
I used a similar bar to this for those hard to reach rivets.
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Rolly, you have two choices. Either you can find someone with good riveting experience and smaller hands to buck those rivets, or alternately you can use SS pops with c/s heads. You are going to be using many of the SS pops as you go further aft. Bob has said that on that bottom skin SS pops with c/s heads can be used.
I personally am not good enough to use a longer bucking bar to reach the rivet. If I can't get my fingers against something (skin/rib/angle), I tend to screw up.
Wish I was closer. Would come by and try to help. Mark
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