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  #1  
Old 02-04-2018, 06:37 AM
Burtonport Burtonport is offline
 
Join Date: Sep 2013
Location: Watertown, New York
Posts: 26
Default 13-02, Step 5, AEX TIE DOWN PREPERATION

Hello. The wing spar assembly plans state to drill and tap the AEX Tie Down on both ends. Why do we have to tap to top end? Thanks.
Regards,
Damien
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Watertown, NY
Ordered RV-12 empennage 9-17
Wing Kit on Order for 2-17
Zodiac 601 HDS, bought from builder 6-09
VAF dues paid until 9-18
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  #2  
Old 02-04-2018, 06:52 AM
rgmwa rgmwa is offline
 
Join Date: Feb 2010
Location: Perth, Western Australia
Posts: 1,576
Default

I believe it was to facilitate hoisting the plane up if that was going to be a useful feature for some builders. There's a #30 hole in the top wing skin just above the tie-down point, but as far as I know, nearly all builders have just put a rivet in it. I tapped both ends of the AEX block, but in hindsight the top one wasn't necessary.
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Last edited by rgmwa : 02-04-2018 at 06:54 AM.
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  #3  
Old 02-04-2018, 08:22 AM
Burtonport Burtonport is offline
 
Join Date: Sep 2013
Location: Watertown, New York
Posts: 26
Default

Thanks for the reply. An I/A friend of mine also thought that it might be useful for a hoist.
Regards,
Damien
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Damien Graham
Watertown, NY
Ordered RV-12 empennage 9-17
Wing Kit on Order for 2-17
Zodiac 601 HDS, bought from builder 6-09
VAF dues paid until 9-18
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  #4  
Old 02-04-2018, 02:55 PM
Rob H Rob H is offline
 
Join Date: Jan 2016
Location: Knoxville, IL
Posts: 88
Default

Iíve heard this question asked before. There were several jokes such as gun mount, external drop tanks, etc.
For the record, I plugged the hole in the skin with a rivet and did not tap both ends.
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RV12 - building
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  #5  
Old 02-07-2018, 09:50 PM
DaveWelch DaveWelch is offline
 
Join Date: Mar 2005
Location: Huntsville, AL
Posts: 302
Default No harm...

I figured the top hole and mount might be useful later, so I tapped it per instructions and put a rivet in the upper skin above. Itís another minuscule weight savings and the threads are there if needed for a camera (or gun mount). One mistake I made was to use the first tap I found in my garage. Right size, wrong thread pitch. Lesson: read the directions, read them again, measure twice, cut once!
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RV12 N951DZ
First Flight 9/23/16!
No paint yet. Working on a scheme with John Deere colors or accents.
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  #6  
Old 02-07-2018, 11:04 PM
rv9builder rv9builder is offline
 
Join Date: Jan 2005
Location: Irvine, CA
Posts: 660
Default

Quote:
Originally Posted by rgmwa View Post
I believe it was to facilitate hoisting the plane up if that was going to be a useful feature for some builders.
I wonder how much weight the top tiedown(s) can support?
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RV-12iS Fuselage
RV-9A Project: Sold

VAF donation made for 2018
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  #7  
Old 02-08-2018, 10:27 AM
Bob Y Bob Y is offline
 
Join Date: Jul 2017
Location: Piedmont, SC
Posts: 7
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So, if one did use the top tie-down for lifting, does anyone know what the sanctioned method is for covering the hole?
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  #8  
Old 02-08-2018, 11:41 AM
funflying funflying is offline
 
Join Date: Oct 2006
Location: arvada, co
Posts: 373
Default

Mine has a rivet in the top skin to fill that unused hole.

Also there was mentioned using the top access for a holding device to hang the plane. I recall a prior thread from a group in Switzerland where an RV12 hung from a hangar ceiling with many other aircraft also hanging and many below. The post wrote about the limited space issues in their area.
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Arvada, CO BJC
RV12, #401, Flying 2013, N612PC
RV6, 1996-2010 sold
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  #9  
Old 02-08-2018, 02:51 PM
rgmwa rgmwa is offline
 
Join Date: Feb 2010
Location: Perth, Western Australia
Posts: 1,576
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One day when I have to give up flying, I'll donate my 12 to the Smithsonian. All they have to do is drill out 2 rivets and hang it up. Vans think of everything.
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  #10  
Old 02-11-2018, 06:58 PM
RFSchaller RFSchaller is offline
 
Join Date: Oct 2010
Location: Phoenix, AZ
Posts: 2,216
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Always looking for a tax dodge, Bob?!
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