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  #1  
Old 02-03-2018, 11:28 PM
Rob H Rob H is offline
 
Join Date: Jan 2016
Location: Knoxville, IL
Posts: 92
Default Flaperon skins 18-06

When overlapping the inboard and outboard skins and clecoeing in preparation for riveting, thereís a small gap between the two skins that Iím not happy with. The first time I noticed this, I thought Iíd been too aggressive with my deburring and emailed the mothership with some pictures to get help. They said the gap wasnít a flight safety issue so it was my decision to order new skins or build on. I decided to order new skins. They just arrived. I clecoed the new skins in place before doing any deburring, and guess what? Thereís a small gap at the trailing edge where the two skins overlap. My conclusion is that itís either normal to be there or else the factory punched holes are off very slightly. Can someone else whoís built their wings tell me if thereís a tiny gap between the two skins where they overlap? Now Iím disappointed that I may have needlessly paid for new skins. The gap is less than 1/16Ē but noticeable. Thanks
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  #2  
Old 02-04-2018, 07:24 AM
John-G John-G is offline
 
Join Date: Jan 2012
Location: Northeast Ohio
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Rob-

Don't remember there being an issue with a gap where the skins overlap on the flaperons.

Have you checked to make sure the flanges on the ribs are not slightly over-bent or under-bent by placing a square on the web of the ribs and verifying the flanges are at 90į?

Suppose if the ribs have been checked and are perfect you could break the edge of the overlapping skin .... but that will not close a large gap as you have described, will help a tiny gap though. A call to the mothership may be in order.

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  #3  
Old 02-04-2018, 07:47 AM
Rob H Rob H is offline
 
Join Date: Jan 2016
Location: Knoxville, IL
Posts: 92
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Hi John, as you know, there are a series of holes to be riveted at the point where the inboard and outboard skins overlap near the middle of each flaperon. When I clecoed each hole, thereís still a very small gap near the trailing edge. To me, the only way this can happen is for the milling of the skins and/or the punching of the holes to be off ever so slightly.
I get the same results when I clecoed the skins together only, without the spar and ribs. I am going to look back at the previous email to Vanís and see if I can contact the same person since new skins didnít fix my problem. Thanks
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  #4  
Old 02-04-2018, 10:27 AM
Jshepherd Jshepherd is offline
 
Join Date: Feb 2017
Location: HIGHLAND, IL
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Not sure if this helps, here is a pic of my flaperon rear skin joint I just completed a few weeks ago for comparison. The gap is 3/64ths

Last edited by Jshepherd : 02-04-2018 at 10:30 AM.
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  #5  
Old 02-04-2018, 01:23 PM
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pstraub pstraub is offline
 
Join Date: Nov 2015
Location: Galt, CA
Posts: 112
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Hi Rob, not sure if this is what you are referring to, but both of mine look like this, I think it's normal.....

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  #6  
Old 02-04-2018, 02:10 PM
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rongawer rongawer is offline
 
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Location: Brentwood, CA
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Mine look like Paulís. I measure my gap at 1/32Ē.
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  #7  
Old 02-04-2018, 02:44 PM
Rob H Rob H is offline
 
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Location: Knoxville, IL
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Yes Paul, thatís what mine looks like. Okay, this must be normal. I sent another email to Vanís, but I think I will just ďbuild onĒ so that I can get something done over the weekend. Thanks for the help gentlemen!
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