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06-24-2023, 06:07 PM
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Join Date: Mar 2006
Location: Newport, TN
Posts: 7,864
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Double Face Palm
Well I punted in the wings till
My new right spar shows up (factory rework defect that engineering said was a no go).
Started working on the fuse and almost immediately ran into an issue.
These two holes were incorrectly dimpled at the factory and are supposed to be left at #30 and drilled by the builder to #12 for bolts.
Anyone else run into this?
__________________
Brantel (Brian Chesteen),
RV-12IS Empennage/Tail Cone Finished, Wings and Fuselage Kits In Progress, Finish kit on order! 
Serial #121606, N912BC (reserved)
→ Check out my RV-12IS builder's BLOG
---------------------------------------------------------------------
Check out my RV-10 builder's BLOG (Good stuff for those starting an RV-10)
RV-10, #41942, N?????, Project Sold 
RV-7/TU, #72823, N159SB Airplane Sold
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06-24-2023, 07:48 PM
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Join Date: Oct 2021
Location: Everett, WA
Posts: 37
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Yep, I had the same question back in 2018. They said that when enlarging the holes it would clean up 98% of the dimple, but that's not actually true. Here is the response from Vans.:
I agree it would make more sense to not dimple these but they have always been dimpled during the prep of these parts. I will pass this along and see if I can get them to reconsider this.
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06-24-2023, 09:13 PM
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Join Date: Jan 2005
Location: Irvine, CA
Posts: 1,030
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Quote:
Originally Posted by Brantel
Anyone else run into this?
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Yes, my center section has those same two holes dimpled.
__________________
Mark
RV-12iS Fuselage
RV-9A Project: Sold
VAF donation made for 2023
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06-24-2023, 09:25 PM
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Join Date: Mar 2006
Location: Newport, TN
Posts: 7,864
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Quote:
Originally Posted by rv9builder
Yes, my center section has those same two holes dimpled.
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You get any guidance from Vans?
__________________
Brantel (Brian Chesteen),
RV-12IS Empennage/Tail Cone Finished, Wings and Fuselage Kits In Progress, Finish kit on order!
Serial #121606, N912BC (reserved)
→ Check out my RV-12IS builder's BLOG
---------------------------------------------------------------------
Check out my RV-10 builder's BLOG (Good stuff for those starting an RV-10)
RV-10, #41942, N?????, Project Sold
RV-7/TU, #72823, N159SB Airplane Sold
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06-24-2023, 09:50 PM
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Join Date: Aug 2020
Location: NC
Posts: 45
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It’s been a year or more since I did this but I’m pretty sure I drilled them to #12 and continued building.
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06-25-2023, 12:13 AM
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Join Date: Jan 2005
Location: Irvine, CA
Posts: 1,030
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Quote:
Originally Posted by Brantel
You get any guidance from Vans?
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No, but I didn't ask. I figured I'd just drill to #12 and, if necessary, find a way to flatten the dimples. I haven't bolted the F-1204R retainer block to the center section yet (Page 21iS/U-11), so I don't know if it will be necessary to flatten what's left of the dimples.
__________________
Mark
RV-12iS Fuselage
RV-9A Project: Sold
VAF donation made for 2023
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06-26-2023, 12:50 PM
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Join Date: Mar 2006
Location: Newport, TN
Posts: 7,864
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So based on the replies that Van's has directed others to drill out the dimples to #12 and build on, I decided to smash them flat and drill em. There is still a small bit of the dimple remaining but it should be a non issue with the bolt/washer/nut that holds the spar alignment block.
Seems the reports of this issue go way back. Its a shame that they continue to make these parts incorrectly.
__________________
Brantel (Brian Chesteen),
RV-12IS Empennage/Tail Cone Finished, Wings and Fuselage Kits In Progress, Finish kit on order!
Serial #121606, N912BC (reserved)
→ Check out my RV-12IS builder's BLOG
---------------------------------------------------------------------
Check out my RV-10 builder's BLOG (Good stuff for those starting an RV-10)
RV-10, #41942, N?????, Project Sold
RV-7/TU, #72823, N159SB Airplane Sold
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06-26-2023, 06:52 PM
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Join Date: Mar 2006
Location: Newport, TN
Posts: 7,864
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Anyone know what these extra holes are for in the main center section assembly?
They are right above the ones that get countersunk.
__________________
Brantel (Brian Chesteen),
RV-12IS Empennage/Tail Cone Finished, Wings and Fuselage Kits In Progress, Finish kit on order!
Serial #121606, N912BC (reserved)
→ Check out my RV-12IS builder's BLOG
---------------------------------------------------------------------
Check out my RV-10 builder's BLOG (Good stuff for those starting an RV-10)
RV-10, #41942, N?????, Project Sold
RV-7/TU, #72823, N159SB Airplane Sold
Last edited by Brantel : 06-26-2023 at 07:03 PM.
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06-27-2023, 01:21 PM
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Join Date: Oct 2021
Location: Everett, WA
Posts: 37
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That doesn't look right. They were definitely not there on my kit. I think a call to Van's is in order.
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06-27-2023, 01:33 PM
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Join Date: Oct 2021
Location: Everett, WA
Posts: 37
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Here's a photo of mine.
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