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  #1  
Old 03-04-2021, 08:38 PM
bkc3921's Avatar
bkc3921 bkc3921 is offline
 
Join Date: Jul 2007
Location: DuBois,Il
Posts: 156
Default ...How many nutplates on inboard nose rib..?

Sorry, but this is driving me crazy. When building the LEFT wing skeleton, Page 15-05 Figure 1 shows the inboard nose rib with the following description: "W-1208-R fwd and aft trimmed with TWO attached nutplates"...the instructions for building this rib is on Page 15-02 Figure 4...which clearly shows only ONE nutplate being installed. The AOA device attaches, and the nutplate is used for grounding some wires......................When you get to the RIGHT wing, its even worse...Page 15-07 Figure 1 shows the inboard nose rib with basically the same instruction, with THREE nutplates installed. Again, the building of this rib is accomplished as before, Page 15-02 Figure 4, showing only ONE nutplate installed. Yes, I could simply put additional nutplates on, but I always like to know why I'm doing something. Can anyone address this?...I would like a definitive answer on the number of nutplates on these 2 nose ribs in question. Am I missing something?... Thanks in advance.
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Last edited by bkc3921 : 03-04-2021 at 08:41 PM. Reason: typo
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  #2  
Old 03-05-2021, 06:25 AM
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bkc3921 bkc3921 is offline
 
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Location: DuBois,Il
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Default The drawing is newer...

Thanks for the reply. The left wing, showing 2 nutplates is from page 15-05, dated 11/15/18, revision 2...and the right wing showing 3 nutplates is page 15-07, dated 01/02/14, revision 0..........so they are both newer. I've only had the wing kit less than 3 months.

It's these little things that are frustrating. About 10 years ago on VAF, one builder posted a list of small errors, including a parts number typo on Page 15-06. That typo is still there, even though the date on the page is 2018..! ugh!
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DuBois,Il
N433BC "Muttley" RV-7A Flying
N433BM "Dastardly" RV-12is EMP, FUSE, WINGS Done..FINISH in progress.
Official Repeat Offender
"Maintain thy airspeed...Lest the earth arise and smite thee..."
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  #3  
Old 07-15-2021, 11:35 AM
BobAndBruce BobAndBruce is offline
 
Join Date: Nov 2019
Location: Fort Collins, CO
Posts: 2
Default Any resolution on this?

Was there ever any resolution on this? We’re at the same point in the plans, with the same drawing date/revisions, and have exactly the same question!

Based on my review of the plans it looks like the inboard rib callout on page 15-05 (11/15/18, Rev 2) should read “W-1208-R FWD AND AFT TRIMMED WITH 1 ATTACHED NUTPLATE”. (Instead of two nutplates)

And the inboard rib callout on page 15-07 (01/02/14, Rev 0) should read “W-1208-L FORWARD AND AFT TRIMMED WITH 1 NUTPLATE” (again, instead of three nutplates)

Can anyone from Van’s confirm?

Thanks
Bob & Bruce

Last edited by BobAndBruce : 07-15-2021 at 11:36 AM. Reason: Corrected second callout
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  #4  
Old 07-15-2021, 12:10 PM
Bob Y Bob Y is offline
 
Join Date: Jul 2017
Location: Piedmont, SC
Posts: 292
Default

Well, I’m obviously not from Van’s, but having already completed my build, I recently had a friend that was building his wings ask me the same question. Our conclusion is that back when I built mine, the landing lights did not use shielded wire, which was subsequently added. The shielded wire required an additional termination for the drain wire. We speculated that the designers initially intended for the drain to be terminated in the additional nut plate, but the KAIs show you doubling the drain wire connection on the same screw/nut plate as the wing ground wire, thus resulting in an unused nut plate,

Anyway, that was our conclusion.
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  #5  
Old 07-15-2021, 01:01 PM
BobAndBruce BobAndBruce is offline
 
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Location: Fort Collins, CO
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Bob,
Thanks for the quick response and that sounds like a very likely reason for the discrepancy. It sounds like installing the nutplates as I described will work so that’s what we’re going forward with…

Bob & Bruce
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  #6  
Old 10-24-2021, 03:27 PM
thiggins thiggins is offline
 
Join Date: Mar 2020
Location: Saluda,NC
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Default

Quote:
Originally Posted by BobAndBruce View Post
Bob,
Thanks for the quick response and that sounds like a very likely reason for the discrepancy. It sounds like installing the nutplates as I described will work so that’s what we’re going forward with…

Bob & Bruce
Glad I found this thread! Scratched my head too long…
Here’s the reference:
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