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08-08-2018, 12:12 PM
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Join Date: Oct 2017
Location: Fort Worth, TX
Posts: 22
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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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08-08-2018, 12:17 PM
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Join Date: Apr 2012
Location: Collierville, TN (KFYE)
Posts: 1,433
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__________________
RV-8 #81077 Super Slow Build
Dynon Skyview HDX, Titan IOX-370, Dual P-Mags, AFP FM200A FI, Whirlwind 200RV CS Prop
First Flight 11/20/2016
www.marksrv8.com
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08-08-2018, 12:20 PM
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Join Date: Jan 2006
Location: Vonore, TN
Posts: 369
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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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John Tierney
Vonore, TN
RV-7A - N777JT Flying
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08-08-2018, 01:06 PM
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Join Date: Oct 2017
Location: Fort Worth, TX
Posts: 22
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Thanks guys.
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08-08-2018, 01:45 PM
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Join Date: May 2006
Location: Pocahontas MS
Posts: 3,884
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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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08-08-2018, 05:07 PM
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Join Date: Oct 2017
Location: Fort Worth, TX
Posts: 22
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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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08-08-2018, 05:25 PM
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Join Date: Mar 2005
Location: Dallas area
Posts: 10,768
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Quote:
Originally Posted by mcoyne34
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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Then you should use 1/8" rivets. "Oops" rivets are not meant to be used in a continuous row.
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Mel Asberry, DAR since the last century.
EAA Flight Advisor/Tech Counselor, Friend of the RV-1
Recipient of Tony Bingelis Award and Wright Brothers Master Pilot Award
USAF Vet, High School E-LSA Project Mentor.
RV-6 Flying since 1993 (sold)
<rvmel(at)icloud.com>
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08-08-2018, 06:56 PM
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Join Date: Dec 2016
Location: New Braunfels
Posts: 299
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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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Randy Vanstory
Flying RV10 - N783V
1st Flight 08/20/2020
Donation Happily Made 2020
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08-17-2018, 07:14 AM
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Join Date: Mar 2009
Location: Plano, TX
Posts: 2,090
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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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Colin P.
RV-6A #20603
Complete 5/10/19
PP SEL / A&P
I donate every year on my B-Day (in Dec), but donated early in Sep'19.
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