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  #1  
Old 02-24-2020, 08:59 PM
jdog0411 jdog0411 is offline
 
Join Date: Aug 2019
Location: Parker, Colorado
Posts: 43
Default Elevator skin (E00901B), small crack when bending trim tab closing tab down.

Hey everyone,

I bent the closeout tab down on the E00901B elevator skin, and it bent down fine and I was able to get it to bend 90 degrees, but it didn't bend right on the relief cutout in the corner and cracked slightly in the corner of the bend. I'm emailing Van's but will this require a new skin? It's a little difficult to see in the photos, but it's a hairline crack right in the corner.



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Parker, CO
RV-14A Under Construction
Empennage Kit arrived on 10/11/19.
Vertical Stabilizer DONE
Rudder DONE
Began Horizontal Stabilizer 01/28/20.
Horizontal Stabilizer DONE
Started Elevators on 02/24/20.
Elevators DONE
Tailcone DONE
Wing kit arrived on 7/30/20.
Began wing kit on 8/4/20.
Donated: 2021
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  #2  
Old 02-24-2020, 09:22 PM
mturnerb mturnerb is offline
 
Join Date: Apr 2015
Location: Ponte Vedra, FL
Posts: 1,606
Default

I think I'd replace it. The other option might be stop-drilling but at this stage my bias would be replace. If you do replace, I'd carefully deburr the skin edge at the corner before bending - that may be the source of the crack. Replacing parts is part of the build process (at least it was for me, more times than I care to mention!)
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Turner Billingsley

RV-14A built/sold N14VB
RV-12iS in progress as of October 2020

Last edited by mturnerb : 02-25-2020 at 08:13 AM.
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  #3  
Old 02-24-2020, 09:46 PM
wirejock's Avatar
wirejock wirejock is offline
 
Join Date: Oct 2005
Location: Estes Park, CO
Posts: 4,769
Default Other possible options

Of course Vans is the authority but how about a couple other options to ask them.
1. Stop drill and file out the crack
2. Cut off the tab and install a riblet
Mine is a 7a so I may be way off base.
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Larry Larson
Estes Park, CO
wirejock at yahoo dot com
Donated 12/01/2021, plus a little extra.
RV-7A #73391, N511RV reserved (3,000+ hours)
Empennage, wings, fuse, finishing kit done. Working FWF
Disclaimer
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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  #4  
Old 02-27-2020, 11:11 PM
jdog0411 jdog0411 is offline
 
Join Date: Aug 2019
Location: Parker, Colorado
Posts: 43
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Vans suggested that I could radius out the area of the crack and it should be ok. I thought about it for a while and decided that I would just replace the skin since no work (except the bend) had been done with it yet. I'll try the bend again a little more carefully this time and hopefully avoid the cracking. The other skin ended up fine after the bend.
__________________
Parker, CO
RV-14A Under Construction
Empennage Kit arrived on 10/11/19.
Vertical Stabilizer DONE
Rudder DONE
Began Horizontal Stabilizer 01/28/20.
Horizontal Stabilizer DONE
Started Elevators on 02/24/20.
Elevators DONE
Tailcone DONE
Wing kit arrived on 7/30/20.
Began wing kit on 8/4/20.
Donated: 2021
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  #5  
Old 03-05-2020, 04:42 PM
jdog0411 jdog0411 is offline
 
Join Date: Aug 2019
Location: Parker, Colorado
Posts: 43
Default

Just an update to this everyone for future reference. Even without the crack in the skin, I would have had to replace the skin. Turns out I didn't make my bend line in line with the end of the trailing edge of the skin anyway. Rather than bending the tab down at the leading edge of the relief holes and straight across to the end of the trailing edge, I bent it at the rear of the relief holes, which is most likely why it cracked anyway.

Not sure why I didn't notice this when I was making the bend, but guess I'll chalk it up to carelessness. The other elevator skin was also bent this way, so I had to end up replacing that one too.
__________________
Parker, CO
RV-14A Under Construction
Empennage Kit arrived on 10/11/19.
Vertical Stabilizer DONE
Rudder DONE
Began Horizontal Stabilizer 01/28/20.
Horizontal Stabilizer DONE
Started Elevators on 02/24/20.
Elevators DONE
Tailcone DONE
Wing kit arrived on 7/30/20.
Began wing kit on 8/4/20.
Donated: 2021
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