RivetBangers.com

It's been awfully quiet in here lately... you guys aren't making enough mistakes!

anyway, I was drilling the rear spar doublers to the rear spar, and on the left one I managed to accidentally put it together with the doublers on the forward side, and I caught it when a couple holes were unusually hard to drill. I now have an extra hole in the rear spar and one hole that's been figure-8'd. Once I assembled it correctly, I drilled the extra hole through the doublers, and I intend to fill it with a rivet. I have 3/8" on centers between the holes.

For the figure-8'd hole, I made a scrap of 0.032" that I'll use against the spar to give the shop head more meat to grip. Is this acceptable?

Here's a pic. Click here for the big version.

Im not sure about your fix for the figure 8 hole. Those rivets are used in sheer, not tension. When the rivet expands in the hole it probably wont work well. You might want to call Van's on this one.

I'll call them now. I imagine they're going to tell me to back it up with another rivet, and I can do that.

they said that it's not a big deal if the problem with the hole is just in the spar web and not in the doubler material. He said if it makes me feel better I can use the bit of doubler material to support the rivet head, but to use 0.040" for the doubler.