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  #1  
Old 08-08-2018, 12:12 PM
mcoyne34 mcoyne34 is offline
 
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Default Drilled wrong sized hole

Building a RV-8. Working on the horizontal stabilizer. While drilling HS 708, I used a #30 bit where the skin attaches. Obviously this is too large for the rivet size I would normally use to attach the skin. Does anybody know off the top of their head what size rivet fits in a #30 hole and has the same head as the rivet that would fit in a #40 hole?

Thanks
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  #2  
Old 08-08-2018, 12:17 PM
Mark Dickens's Avatar
Mark Dickens Mark Dickens is offline
 
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They're called "oops rivets"

See https://www.vansaircraft.com/cgi-bin...e&product=oops
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  #3  
Old 08-08-2018, 12:20 PM
John Tierney John Tierney is offline
 
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Default Oops Rivet

You'll probably never need them again, but a collection of NAS 1097 rivets is nice to have.
http://www.cleavelandtool.com/OOPS-R.../#.W2sz8SyWzq4
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  #4  
Old 08-08-2018, 01:06 PM
mcoyne34 mcoyne34 is offline
 
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Thanks guys.
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  #5  
Old 08-08-2018, 01:45 PM
rv7charlie rv7charlie is offline
 
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Wait.

For *all* the skin holes, or just one? If you did them all, you might be better off just using 1/8" rivets. If HS708 gets dimpled, then 1/8" rivets would seem the obvious solution to me; #30 is the drill size for 1/8" rivets. A whole row of 'oops' rivets on a piece of structure (stabilizer spar?) would mean very little material under the heads of the rivets, right?

If it's a whole row, I' *definitely* run it by Van's engineers before using oops rivets.

Last edited by rv7charlie : 08-08-2018 at 01:47 PM.
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  #6  
Old 08-08-2018, 05:07 PM
mcoyne34 mcoyne34 is offline
 
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It was a whole row on HS706 (outermost Rib) but only on one side of it. And i did a few on HS603PP (rear spar) but only one side. I did not however drill the skin.
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  #7  
Old 08-08-2018, 05:25 PM
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Mel Mel is offline
 
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Quote:
Originally Posted by mcoyne34 View Post
It was a whole row on HS706 (outermost Rib) but only on one side of it. And i did a few on HS603PP (rear spar) but only one side. I did not however drill the skin.
Then you should use 1/8" rivets. "Oops" rivets are not meant to be used in a continuous row.
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  #8  
Old 08-08-2018, 06:56 PM
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rvanstory rvanstory is offline
 
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I made a similar mistake when building my vertical stabilizer. I simply completed the row with 1/8" rivets all the way. Van's said oops rivets are fine for a hole or two, but not structurally sound for a string or row of them.

Besides, no one other than an experienced RV builder will ever know that it doesn't require this size rivet anyway. And once it's painted, I bet even the experienced builder wouldn't notice.
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  #9  
Old 08-17-2018, 07:14 AM
WingsOnWheels WingsOnWheels is offline
 
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In addition, the Oops rivets are intended for a -3 dimple. if you already drilled to #30 before dimpling you need to use -4 dimple dies, so a -4 rivet is the right way to go. The oops rivets are good if you accidentally oversize a hole already dimpled for -3.
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