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03-30-2020, 03:54 PM
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Join Date: Jul 2017
Location: Hernando, MS
Posts: 37
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Dimpled the wrong side of the skin, what now?
RV-10 right aileron
I forgot to mirror the right aileron and primed/dimpled both sets of top & bottom skins exactly the same. I didn?t catch it until I was setting everything up to back rivet the stiffeners and main ribs on.
So here?s the xx.xx$(insert shipping cost here) question. Can those two right aileron skins be redimpled in the correct direction and will it matter that the outside is primed already (this will be a painted/wrapped airplane so no need to worry about polishing)? To be honest it?s only my second ?big? mistake so at least I?ve got that going for me, which is nice... 
What says the collective group at the great VAF?
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Zach Young
RV-10 empennage complete, wings complete (minus bottom skins), fuselage in progress
Hernando, MS
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03-30-2020, 04:12 PM
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Join Date: Jan 2005
Location: Oklahoma City, OK
Posts: 921
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I'd flatten it and "re-dimple" it and keep building.
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RV9A under construction--N781DM reserved
Donated
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03-30-2020, 04:26 PM
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Join Date: Jan 2005
Location: Yorkshire, England
Posts: 2,048
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Ditto - just once though ;-)
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"I add a little excitement, a little spice to your lives, and all you do is complain!" - Q
Donated in 2020
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03-30-2020, 05:11 PM
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Join Date: Mar 2016
Location: Northern VA
Posts: 266
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I’ll give a different opinion. If it were just a few dimpled, I would agree. The whole skin dimples the wrong way, I would replace it. (Or set it aside and add this skin to your fuse order to avoid shipping costs).
__________________
Brian Lester
RV10 - #41778
Empennage - Done (for now)
Wings - Done (for now)
Fuselage - Done (for now)
Finish Kit - in progress
RV10builder.com
KVKX / KHEF
Last edited by BrianDC : 03-30-2020 at 05:14 PM.
Reason: Change wing to fuse order
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03-30-2020, 05:42 PM
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Join Date: Jan 2008
Location: Ashland, OR
Posts: 2,561
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Quote:
Originally Posted by BrianDC
I’ll give a different opinion. If it were just a few dimpled, I would agree. The whole skin dimples the wrong way, I would replace it. (Or set it aside and add this skin to your fuse order to avoid shipping costs).
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I think I agree. It is one thing to reverse a dimple on just one or two holes. Lots of margin in most places in riveted structures.
But if a whole skin is dimpled the wrong way, it may be a real problem. Imagine you finish your airplane and spend a chunk of money on a nice paint job. And then you start getting cracks around several rivets in high-stress areas of that aileron?
I would replace that skin now.
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Steve Smith
Aeronautical Engineer
RV-8 N825RV
IO-360 A1A
WW 200RV
"The Magic Carpet"
Hobbs 625
LS6-15/18W sailplane SOLD
bought my old LS6-A back!! 
VAF donation Jan 2020
Last edited by scsmith : 03-30-2020 at 07:56 PM.
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03-30-2020, 06:38 PM
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Join Date: Mar 2005
Location: DVT Phoenix
Posts: 1,187
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Did this and tried the re dimple thing, the skin was so screwed and distorted (wavy) ordered new skin. Have reversed dimpled a few things and it worked out ok but this no way, ugly.
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Larry
Last edited by Larco : 03-30-2020 at 06:41 PM.
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03-30-2020, 09:08 PM
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Join Date: Jan 2010
Location: Southern Michigan
Posts: 1,964
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Replace it and don't look back.
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David C.
Howell, MI
RV-10: #41686 Under Construction
RV-9A: #90949 Under Construction
RV-10: #40637 Completed/Sold 2016
Cozy MKIV:#656 Completed/Sold 2007
"Donor Exempt" but donated through Dec. 2020
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03-31-2020, 10:00 AM
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Join Date: Jul 2017
Location: Hernando, MS
Posts: 37
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Yeah, this is kinda what I thought might happen with the different opinions going each way. I called Vans builder assistance line and he said since it’s a control surface vs a structural skin (wing skin etc.) that it’s a much thinner piece of material and therefore less susceptible to work hardening or cracking. He said to redimple it at look at each dimple closely and if they all look good then I’m fine. I checked them all under a jewelers loupe and couldn’t see even a hint of cracking. I’m tempted to build on since the mother ship said it was fine but you 4 guys with the opposite opinion give me pause as I’ve been reading y’alls opinion on here for years and specifically Dave, Larry, and Steve I highly respect. (No offense Brian, I guess I just don’t read a lot of the threads you’ve posted in)
Choices, choices.....
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Zach Young
RV-10 empennage complete, wings complete (minus bottom skins), fuselage in progress
Hernando, MS
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03-31-2020, 01:02 PM
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Join Date: Mar 2016
Location: Northern VA
Posts: 266
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Quote:
Originally Posted by auburnaviator
Yeah, this is kinda what I thought might happen with the different opinions going each way. I called Vans builder assistance line and he said since it?s a control surface vs a structural skin (wing skin etc.) that it?s a much thinner piece of material and therefore less susceptible to work hardening or cracking. He said to redimple it at look at each dimple closely and if they all look good then I?m fine. I checked them all under a jewelers loupe and couldn?t see even a hint of cracking. I?m tempted to build on since the mother ship said it was fine but you 4 guys with the opposite opinion give me pause as I?ve been reading y?alls opinion on here for years and specifically Dave, Larry, and Steve I highly respect. (No offense Brian, I guess I just don?t read a lot of the threads you?ve posted in)
Choices, choices.....
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No offense taken, I'm still a newbie I guess. Opinions are worth what you pay for them. If mothership gave you advice, I would listen.
__________________
Brian Lester
RV10 - #41778
Empennage - Done (for now)
Wings - Done (for now)
Fuselage - Done (for now)
Finish Kit - in progress
RV10builder.com
KVKX / KHEF
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04-03-2020, 08:39 AM
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Join Date: Jan 2014
Location: Cedar Hill, TX
Posts: 329
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If the mothership said to build on, I'd build on. My experience with Van's is they are usually pretty conservative on there advice when to replace parts, so I would take this as your ok. But if you do decide to replace, I'd do as mentioned earlier and just wait and add the skin to a later big order. Shipping is a killer on some of these parts.
Quote:
Originally Posted by auburnaviator
Yeah, this is kinda what I thought might happen with the different opinions going each way. I called Vans builder assistance line and he said since it?s a control surface vs a structural skin (wing skin etc.) that it?s a much thinner piece of material and therefore less susceptible to work hardening or cracking. He said to redimple it at look at each dimple closely and if they all look good then I?m fine. I checked them all under a jewelers loupe and couldn?t see even a hint of cracking. I?m tempted to build on since the mother ship said it was fine but you 4 guys with the opposite opinion give me pause as I?ve been reading y?alls opinion on here for years and specifically Dave, Larry, and Steve I highly respect. (No offense Brian, I guess I just don?t read a lot of the threads you?ve posted in)
Choices, choices.....
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RV-10 in Process
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