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09-16-2011, 11:00 AM
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Join Date: Apr 2010
Location: slc, UT
Posts: 29
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center section nutplates... missed...
In the hopes someone is familiar, perhaps there is a plan b to avoid drilling 20 rivets out..
first mistake today, attaching f-704c-l to f-704 forward center section (rv-7), twenty rivets total, and missed, somehow, the nut plates that receive the bolts that go thru f-704D-L, f-704B, f-704G, wing spar, f-704a, and F-704C-L (where the nutplates are, or should be attached). I know the professional finish would be to drill out those twenty rivets, but that risks a fair bit of damage, are these nutplates accessible during wing installation so that with nimble fingers I could just use nuts ?
Seems an easy painless (except during wing installation) fix ?
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09-16-2011, 12:11 PM
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Join Date: Oct 2005
Location: Portland, OR
Posts: 180
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I am not sure I remember which nutplates you are talking about, but why not put them in with blind nutplate rivets?
__________________
James Jula - CFI/II/MEI - N713JL RV-7A First Flight 10/12/15 - "What is chiefly needed is skill rather than machinery." Wilbur Wright, 1902
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09-16-2011, 12:41 PM
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Join Date: Jan 2005
Location: SC
Posts: 12,887
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Quote:
Originally Posted by jmjula
I am not sure I remember which nutplates you are talking about, but why not put them in with blind nutplate rivets?
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That will work, IF the rivet heads do not need to be countersunk. I?m thinking we are talking about the K1000-4 nutplaes that go on the forward side of the forward center section and an receive the two AN4-13A bolts (That?s the size used on the -9, I?m not sure about the -7.)
There may be enough room for the spar stub to slide in past a protruding rivet tail. (The tail will extend into the spar cavity.) If that is the case, you should be OK. All those rivets do is keep the platenuts from spinning.
__________________
Bill R.
RV-9 (Yes, it's a dragon tail)
O-360 w/ dual P-mags
Build the plane you want, not the plane others want you to build!
SC86 - Easley, SC
www.repucci.com/bill/baf.html
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09-16-2011, 01:25 PM
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Join Date: Apr 2010
Location: slc, UT
Posts: 29
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excellent.
Thank you for your input, that was my first query here and it worked like a charm. Take a break, think things over, have some lunch, read replies from smart builders, and off I go.
Thank you gentlemen.
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09-16-2011, 06:21 PM
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Join Date: Jan 2006
Location: Austin, TX
Posts: 81
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The nutplates for the an4-13a are on the main spar not the center section dwg11.
William Bennett
RV8 flying
RV7 fuselage
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09-16-2011, 07:35 PM
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Join Date: Apr 2010
Location: slc, UT
Posts: 29
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woops.
Indeed, wish I would have had your insight before installing my, "oh no, how to fix this mistake that is really not a mistake after all, mistake"
"for sale, four used k100-4 nutplates"
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09-17-2011, 08:08 AM
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Join Date: Dec 2006
Location: Colorado Springs
Posts: 576
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Me too
William is correct. I almost did the same thing. The drawing sure made it look like the nutplates are on the bulkhead in the fuselage, rather where it really is...the wing spar.
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