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  #1  
Old 01-17-2011, 06:02 PM
fred gassit fred gassit is offline
 
Join Date: Nov 2008
Location: Perth western Australia
Posts: 26
Default Best fix for an ugly hole? (t-405)

Hi guys

Against my better judgement I drilled out an AD-4 in the T-405 fuel tank attach bracket.

In my haste (proseal curing) I wallowed the hole pretty badly.

That image shows an undriven AD-5 sitting in the hole, note there is still "plenty" of clearance around the shank.

Edge distance is intact for that rivet and the hole is a better fit on the inside. (i.e. the wallowing doesn't extend deeply into the hole)

I have considered a couple of fixes so far.

1) If I put the shop head on the outside (as in the image) it should fill the gap nicely

2) I could ream the hole for an AN3 bolt, at least it will be perfectly round all the way through then. I'm unaware of anyone using nuts and bolts in their tanks and their success in doing so.

3) Last question, do you think if the rivet was driven from the outside that the shank would expand and fill the gap just under the head? I have my doubts that it would..

I have asked the same of Vans but unusually haven't gotten a response yet. (been about a week)

Does anybody have any suggestions as to a possible solution here?

Thanks in advancehttp://picasaweb.google.com/10173053...16920508997186
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  #2  
Old 01-17-2011, 06:50 PM
Bob Kuykendall's Avatar
Bob Kuykendall Bob Kuykendall is offline
 
Join Date: Sep 2006
Location: Douglas Flat, CA
Posts: 589
Default

That doesn't look so bad to me. If that's the worst hole you've done so far I'd not be worried at all. If it were me, I'd just put a rivet in it and build on.
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  #3  
Old 01-17-2011, 07:48 PM
DakotaHawk's Avatar
DakotaHawk DakotaHawk is offline
 
Join Date: Oct 2008
Location: Arlington, WA
Posts: 799
Default What Bob said...

Go ahead and drive that rivet! Then goop it up with ProSeal and no one will ever know the difference.
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RV-7 N957RV (First Flight on Dec 18, 2009)
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Arlington, WA
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