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lsbrv7a(at)yahoo.com
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 Posted: Mon Jan 30, 2006 7:30 pm Post subject: nut plate revets |
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Is mounting nut plates with NAS-1097 rivets (oops) and acceptable practice? It seems as if it would be easier in some locations, such as the trim plate.
Sherman Butler
RV 7a Empennage
Sherman Butler
RV-7a Empennage
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flyboy.bob(at)gmail.com
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| Posted: Mon Jan 30, 2006 9:52 pm Post subject: nut plate revets |
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Sherman,
The main purpose of a nutplate rivet is to hold the nut(plate) so you
can get a screw in it . . . the rivet is not usually structural. So I
would use what ever works in a given situation unless you perceive
that the rivet is doing something more than just holding the nutplate.
I generally try to use the rivet that is called out . . . but I would
rather have a good "blind rivet" than a bad driven one!
You talk about Oops rivets . . . which is just another form of driven
rivet in my shop and are used mainly when you have missdrilled
something and ended up to a over sized hole?
Good Luck,
Bob in SE Iowa
On 1/30/06, Sherman Butler <lsbrv7a(at)yahoo.com> wrote:
| Quote: |
Is mounting nut plates with NAS-1097 rivets (oops) and acceptable practice? It seems as if it would be easier in some locations, such as the trim plate.
Sherman Butler
RV 7a Empennage
Sherman Butler
RV-7a Empennage
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Vanremog(at)aol.com
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| Posted: Mon Jan 30, 2006 11:30 pm Post subject: nut plate revets |
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In a message dated 1/30/2006 7:32:33 P.M. Pacific Standard Time,
lsbrv7a(at)yahoo.com writes:
Is mounting nut plates with NAS-1097 rivets (oops) and acceptable practice?
It seems as if it would be easier in some locations, such as the trim plate.
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Absolutely. These rivets were almost made for this application.
GV (RV-6A N1GV O-360-A1A, C/S, Flying 771hrs, Silicon Valley, CA)
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jeffpoint
Joined: 10 Jan 2006
Posts: 72
Location: MKE
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| Posted: Mon Jan 30, 2006 11:53 pm Post subject: nut plate revets |
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Yes, 1097 rivets are acceptable and IMHO invaluable for installing
nutplates. The rivets only hold the nutplate in place, thetorque of the
screw in the nutplate provides the structural stuff. You could hold the
nutplate in place with dried bubblegum if you wanted to.
Jeff Point
RV-6
Milwaukee
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Jeff Point
RV-6
Milwaukee WI |
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sears(at)searnet.com
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| Posted: Tue Jan 31, 2006 2:20 am Post subject: nut plate revets |
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| Quote: | Is mounting nut plates with NAS-1097 rivets (oops) and acceptable
practice? It seems as if it would be easier in some locations, such as the
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trim plate.
You've gotten some good answers on this; but, let me throw in something.
Whatever you use to install nut plates, plate nuts, anchor nuts (official
name), make sure it's somthing that has enough strength to hold up for a
long time. You don't want your fasteners to give up at some point down the
line when you accidentally put too much torque on the anchor nut; so,
bubblegum may not work well enough.  . Anchor nuts are used in places
where one can't get to them easily. Changing one out, or replacing the
rivets that hold them in place, can be a real task that you don't want. The
oops rivet may work; but, remember that tiny head may cause you problems
later if it decides to pull out. I'm not saying it will. I'm being
conservative. I've seen anchor nuts come loose on at least one side. It
became a task getting the anchor nut back in place well enough for the screw
to thread in without cross threading. I don't want that to happen if it's
buried deeply inside the structure where I'd have to disassemble a bunch of
stuff to get to it to fix it.
Jim Sears in KY
RV-6A N198JS
RV-7A #70317
EAA Tech Counselor
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Rick Galati
Joined: 10 Jan 2006
Posts: 91
Location: Lake St. Louis MO.
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| Posted: Tue Jan 31, 2006 5:23 am Post subject: Re: nut plate revets |
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| lsbrv7a(at)yahoo.com wrote: | | Is mounting nut plates with NAS-1097 rivets (oops) and acceptable practice? It seems as if it would be easier in some locations, such as the trim plate. ------- |
Sherman,
Absolutely. For nut plate application the NAS1097 is the fastener of choice. In fact, you will surely compromise hole quality by attempting to machine countersink thin material such as .025 to accept a kit supplied 426 rivet! The NAS 1097 is available in just about every length that the ubiquitious NAS426 is, but the longer lengths can be hard to find. The rivet has long been used in the production environment. No matter, the RV design only requires the smaller lengths. I don't know for sure, but my guess is Van's coined the quaint little term "oops" rivet to paint a word picture in the mind of a newbie in an attempt to better describe one of the NAS1097AD4's potential qualities to a new builder faced with a botched and oversized hole to fill. Actually the NAS1097 is a far more utilitarian fastener than just serving in that capacity. Curiously, Van's own people use the 1097 AD3 rivet to install nutplates/platenuts (the term is interchangeable) but its application is never explained in the builders manual. Van's stocks a few lengths of the NAS1097AD3. You will find the -3.5 to be by far the most commonly used length. Not found in the accessory catalog, you have to refer to "the list" to find them. I have used the 1097 in many places on the airframe, including a pattern on the canopy side skirts, rudder cable fairing attachment, etc....wherever material thickness and the job warrants their welcomed use. The oft misunderstood NAS1097....its not just an "oops" rivet. Order your stash today!
Rick Galati RV-6A "Darla"
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