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  #1  
Old 04-14-2008, 01:36 PM
eison eison is offline
 
Join Date: Jul 2007
Location: Irvine, CA
Posts: 28
Default I had a case of premature

Dimpling. I got an itchy trigger foot on that darn foot switch on the pnuematic squeezer. I now have a hole that is about 1/4 inch from the hole that I wanted to dimple.

If it had been in the middle of the skin, no problem, I would throw in a rivet and be done with it. My problem and concern is that the hole is about 1/2 in the dimple for the rivet, and is actually connected to the hole beside it. I am doing a poor job describing it, but it looks sort of like a figure 8 with the bottom of the figure 8 being the "good" hole and the top being the "oops" hole. I tried to take a picture, but couldn't get the camera to focus well enough.

The dimple will keep me from being able to put a rivet in both holes. This is on the top of the HS skin, at the back where it connects to the HS Spar. It is in the middle of the sheet, not on a rib.

From a cosmetic standpoint, I think that it can be filled no problem. From a structural standpoint, I can't imagine it will have an impact as it is in the middle of a row of rivets. Am I wrong?

My main question is will the figure 8 hole cause future stress cracks in the HS skin? Is there anything I can do to mitigate this issue now? Should I just suck it up and buy a new skin? I hate to wait on parts, but I don't want to be cussing at myself later.

Eric
Rv 10
Kit 764
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  #2  
Old 04-14-2008, 01:48 PM
Jamie's Avatar
Jamie Jamie is offline
 
Join Date: Jan 2005
Location: Atlanta, GA
Posts: 2,295
Default

If it makes you feel any better, I did this on my vertical stab. I knew that the emp fairing would cover it so I didn't worry about it. I simply flattened the metal, dimpled the proper hole, deburred the errant hole the best I could and I look at it when I have the emp fairing off. I'm not losing any sleep over it, although I'm sure others will respond and tell me how it's going to kill me.
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  #3  
Old 04-14-2008, 01:49 PM
DeltaRomeo DeltaRomeo is offline
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Join Date: Jan 2005
Location: Highland Village, TX
Posts: 4,179
Default

Welcome to the club <g>.

Rivet on. Don't replace the skin.

It's a known fact that all skins need an imperfection to let out the evil spirits.....or at least that's what someone told me .

Fill it before painting.

No biggie.

b,
d



Quote:
Originally Posted by eison View Post
Dimpling. I got an itchy trigger foot on that darn foot switch on the pnuematic squeezer. I now have a hole that is about 1/4 inch from the hole that I wanted to dimple.

If it had been in the middle of the skin, no problem, I would throw in a rivet and be done with it. My problem and concern is that the hole is about 1/2 in the dimple for the rivet, and is actually connected to the hole beside it. I am doing a poor job describing it, but it looks sort of like a figure 8 with the bottom of the figure 8 being the "good" hole and the top being the "oops" hole. I tried to take a picture, but couldn't get the camera to focus well enough.

The dimple will keep me from being able to put a rivet in both holes. This is on the top of the HS skin, at the back where it connects to the HS Spar. It is in the middle of the sheet, not on a rib.

From a cosmetic standpoint, I think that it can be filled no problem. From a structural standpoint, I can't imagine it will have an impact as it is in the middle of a row of rivets. Am I wrong?

My main question is will the figure 8 hole cause future stress cracks in the HS skin? Is there anything I can do to mitigate this issue now? Should I just suck it up and buy a new skin? I hate to wait on parts, but I don't want to be cussing at myself later.

Eric
Rv 10
Kit 764
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  #4  
Old 04-14-2008, 02:04 PM
airguy's Avatar
airguy airguy is offline
 
Join Date: Oct 2006
Location: Garden City, Tx
Posts: 5,391
Default

I had one as well, in my right HS skin, same deal with the hand held trigger instead of the foot feeder. Mine was far enough off the intended hole that it didn't interfere, so I just flattened it out and kept going.

Then a few days later I realized I had screwed up my spar and was going to have to replace that, so I went ahead and ordered a new skin since the old one was already matchdrilled and dimpled to the spar. Necessary? Maybe, maybe not. But I felt better about it.
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  #5  
Old 04-14-2008, 02:18 PM
vmirv8bldr's Avatar
vmirv8bldr vmirv8bldr is offline
 
Join Date: Jun 2005
Location: Eastvale, CA
Posts: 378
Default Twice shy

I've paid membership dues into this club twice now. One is a figure eight where a stiffener joins the fuse side. The other is an independant hole on the HS covered by the fairing.

I've lost sleep on some of my mistakes, but not these two.
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Barrett IO-390
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  #6  
Old 04-14-2008, 02:30 PM
N916K's Avatar
N916K N916K is offline
 
Join Date: Jan 2005
Location: Tehachapi, CA
Posts: 538
Default

Eric

Like they have said, just flatten the dimple out and move on. You can fix a lot of stuff when you paint.

I see this was you first post, welcome. If you ever need someone to look your plane over, let me know I work in Irvine and enjoy Sierra Nevada Pale Ale.
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Santa Ana, CA
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  #7  
Old 04-14-2008, 03:16 PM
eison eison is offline
 
Join Date: Jul 2007
Location: Irvine, CA
Posts: 28
Default

Cam,

I would enjoy having you take a look. I will work on the Pale Ale.

I will send you a PM with the particulars.

Eric
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