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Tank attach bracket platenuts

On the root end of the main spars there are three little platenuts that, although they seem harmless, can be a royal pain in the butt. These three platenuts are the attach point for the most inboard fuel tank attach Z-bracket. This is the one attach bracket that is backwards (meaning that the platenuts are in the spar instead of on the bracket). I had troube deciding when to rivet these platenuts to the spar.

I thought that I was real smart when I decided to rivet the platenuts on before I riveted the wing skeleton together (it is real tight between those wing walk ribs), but I discovered later that I had to take them off so that I could drill back through the spar to locate the holes in the attach bracket. So I drilled out the rivets, back drilled the tank attach bracket and then re-riveted the platenuts. It is a real pain to get in there and buck those six rivets.

Here is how I intend to avoid this on the right wing. Simply drill the attach bracket BEFORE riveting the skeleton together. Take one of the tank attach brackets and find the center of one of the flanges, like it calls out in the manual, and drill it to the spar. Then rivet on the platenuts and proceed with the wing skeleton assembly.




Disclaimer:
This web site and the infomation contained within it are for entertainment purposes only. The opinions expressed on construction techniques are my opinions only and should not be confused with proper construction techniques. There is undoubtedly more than one way to build an airplane and some methods that I use may or may not work in any given circumstance. If there is any question please call the kit manufacturer. I love to help but I am not responsible for the misuse of any information contained on this web site.



 March 3, 2016
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