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  #1  
Old 10-14-2008, 09:49 PM
DaveWelch DaveWelch is offline
 
Join Date: Mar 2005
Location: Huntsville, AL
Posts: 330
Default Drill & Tap the AEX Tiedown

Hi Gang,
Quick intro: I'm Dave Welch. Ellen and I just recieved RV12 Wing Kit #121 here in Huntsville. BTW: We built our RV7 Emp at Alexander's with Rudi Greyling. It was a pleasure to see his finished aircraft pix and hear about the awards.

OK, the Question:
Seems to me the existing hole in the AEX tiedown is SO CLOSE to being 3/8" already, I'm afraid to try drilling it for fear of breaking my bit off down in there. Did you guys actually drill it or did you just go ahead and run the tap in there? If drilled, did you do it by hand or with a Drill Press. Any experiences, cautions and suggestions will be appreciated!

Best Regards,
Dave.
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  #2  
Old 10-15-2008, 01:34 AM
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RudiGreyling RudiGreyling is offline
 
Join Date: Jan 2005
Location: South Africa, Johannesburg
Posts: 1,308
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Hi Dave! Good to see you here!

Sorry I can't help you with your query, I am still waiting for my wing kit, it is on the water to South Africa. Suppose to be in the harbour end of this week, so soon.

Good luck with the RV12!

Regards
Rudi
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  #3  
Old 10-15-2008, 08:07 AM
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Jetguy Jetguy is offline
 
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Location: Texas, Fort Worth
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Dave approx the first 1/4 inch depth of the AEX is pre drilled at 5/16 then it get smaller so you need to drill it deeper with the 5/16 bit before you tap it. I think Vans did it this way so you would have a nice straight hole when you drill it for the tap. Mark your bit with tape for the 1 inch depth and use a 3/8-16 tap. Tap top and bottom. I used a high speed air drill. You can use a slower electric drill just dont wollow it out as you go. See this link for great info for corrections to plans: http://www.vansairforce.com/communit...ad.php?t=34767

John
120079
Wings done
awaiting fuse.
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  #4  
Old 10-15-2008, 06:54 PM
DaveWelch DaveWelch is offline
 
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Location: Huntsville, AL
Posts: 330
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Thanks Rudi, hope you get your kit soon!
Thanks John, I'll give it a whirl tonight.
Dave.
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  #5  
Old 02-09-2019, 01:26 PM
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randylervold randylervold is offline
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Join Date: Dec 2004
Location: Mill Creek, WA
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Anyone have any idea why the plans, page 13-02, call for us to drill and tap both the top and bottom on each wing? I don't ever recall seeing a hole in the top skin for any sort of lift or tiedown. I just completed it anyway but it seems weird to me.
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RV-12iS, empennage/tailcone complete, wings currently, fuse on order
RV-3B, first flight 2007 - sold
RV-8, first flight 2001 - sold
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  #6  
Old 02-09-2019, 01:55 PM
rvbuilder2002 rvbuilder2002 is offline
 
Join Date: Jul 2005
Location: Hubbard Oregon
Posts: 7,994
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Quote:
Originally Posted by randylervold View Post
Anyone have any idea why the plans, page 13-02, call for us to drill and tap both the top and bottom on each wing? I don't ever recall seeing a hole in the top skin for any sort of lift or tiedown. I just completed it anyway but it seems weird to me.
Randy,
The wing skin has a P.P. hole on the top location as well as the bottom.

During kit development it was conceived as an anchor point that could be used while trailing or even lifting the airplane to hang off the floor in a hangar.
Most people don't enlarge the hole and just fill it with a rivet. The rivet can be removed and the hole enlarged at a later time if there was ever a desire to use it. I usually tell people that if the have no experience with taps, it is a good place to practice before doing the ones on the bottom.
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RV-6A (aka "Junkyard Special ")
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  #7  
Old 02-09-2019, 02:28 PM
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randylervold randylervold is offline
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Aha, thanks!!
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RV-12iS, empennage/tailcone complete, wings currently, fuse on order
RV-3B, first flight 2007 - sold
RV-8, first flight 2001 - sold
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  #8  
Old 02-09-2019, 07:03 PM
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wirejock wirejock is offline
 
Join Date: Oct 2005
Location: Estes Park, CO
Posts: 3,115
Default Cleveland

Not sure about the 12 but Cleveland sells a kit with three brackets and nice tie down bolts. Tie downs are already drilled and tapped.
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http://wirejockrv7a.blogspot.com
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Donated 12/27/2018. Plus a little extra.
RV-7A #73391, N511RV reserved (2,000+ hours)
HS SB, empennage, tanks, wings, fuse, working finishing kit
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I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.
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  #9  
Old 02-09-2019, 09:08 PM
daveyator daveyator is offline
 
Join Date: Jan 2011
Location: adelaide, south australia
Posts: 145
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Don't know if they're still available, but Vans did carry pre tapped, anodised and very nicely finished brackets for the 12 wing tie downs. I bought a pair, probably 6 years ago. They were quite reasonably priced as I recall.
Cheers,
DaveH 120485
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  #10  
Old 02-12-2019, 07:38 AM
kgdietz kgdietz is offline
 
Join Date: Oct 2018
Location: Ocean, NJ
Posts: 1
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Was going to ask about tapping the top of the bracket since I didnít see anything mentioned in the plans about a hole in the skin. I though maybe it would be a place to mount a camera.
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