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nfivesl(at)yahoo.com
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 Posted: Tue Jan 17, 2006 11:01 am Post subject: Rivnuts or Anchor Nuts or Am I Nuts? |
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Fellow builders:
As you can see from the following photo, I haven't yet
attached my forward, top skin permanently.
http://www.cooknwithgas.com/1_17_06_Panel.jpg
The first reason is that I have a rat's nest of wires
to be tidied up. The second reason is that I want to
be able to remove it later and haven't decided how
best to do this.
I have been using rivnuts all over the place for
non-structural applications (like wire-clamps).
For those of you who are reading and have not
personally installed a rivnut and/or an anchor nut
before, here's the best photo I could find:
http://www.torquecontrol.ltd.uk/photo2.jpg
or
http://www.aircraftspruce.com/catalog/hapages/rivets/rivnuts.jpg
As opposed to an anchor nut:
http://www.aircraftspruce.com/catalog/hapages/bolts/minianchornut.jpg
So - after all that - my question is - does anybody
have a good reason why I should not install rivnuts to
hold down the top forward skin with screws? (Besides
the obvious reason that one or two may spin in the
future - I can get back there to hold them if this
happens).
Thanks in advance for any input,
Scott Laughlin
www.cooknwithgas.com
DO NOT ARCHIVE
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craig(at)craigandjean.com
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| Posted: Tue Jan 17, 2006 11:17 am Post subject: Rivnuts or Anchor Nuts or Am I Nuts? |
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Another possibility is Tinnerman U nuts. At least one builder use them to
attach his top, forward skin.
Look half way down this page:
http://www.aircraftspruce.com/catalog/hapages/tinnerman.php
-- Craig
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mountain4don(at)yahoo.com
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| Posted: Tue Jan 17, 2006 11:40 am Post subject: Rivnuts or Anchor Nuts or Am I Nuts? |
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The anchor nuts have a much larger bearing area and are much stronger, plus the rivets provide much larger torque capacity when the screw gets hard to turn in old age. And they are pretty easy to put in.
Don
601 XL, tail done, working on wings
---------------------------------
Got holiday prints? See all the ways to get quality prints in your hands ASAP.
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thilo.kind(at)gmx.net
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| Posted: Tue Jan 17, 2006 1:41 pm Post subject: Rivnuts or Anchor Nuts or Am I Nuts? |
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Hi Scott,
I used anchor nuts for the forward skin. Replaced all rivets with #8 (for
the side longerons) and #6 (for the firewall and IP) anchor nuts. Was a lot
of work to install all those anchor nuts, but haven't regretted it at all. I
have taken the forward skin off multiple times. And best off all: the plane
flys fine and has not fallen out of the sky.
I never used rivnuts, but heard several time, that too much torque will turn
them loose in their holes.
Best regards
Thilo Kind
CH 601 HDS
---
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Larry McFarland
Joined: 10 Jan 2006
Posts: 36
Location: East Moline, Illinois
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ggower_99(at)yahoo.com
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| Posted: Tue Jan 17, 2006 10:03 pm Post subject: Rivnuts or Anchor Nuts or Am I Nuts? |
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Hello Scott,
Thats the only reason, they can turn loose in the skin. I made a test for the rivnuts to prevent them to turn: A used an epoxy putty with aluminum powder and applied carefully a little in the rivnut holding area and the skin... Then pressed the rivnut. My idea is that it will have double support, the natural squeeze of the rivnut and the glue of the epoxy... has to be very the exact quantity so the epoxy will not get in the nut area. Hope I got understood... Hope it holds as welded....
The tool was to expensive to trow it away 
Saludos
Gary Gower
N5SL <nfivesl(at)yahoo.com> wrote:
Fellow builders:
As you can see from the following photo, I haven't yet
attached my forward, top skin permanently.
http://www.cooknwithgas.com/1_17_06_Panel.jpg
The first reason is that I have a rat's nest of wires
to be tidied up. The second reason is that I want to
be able to remove it later and haven't decided how
best to do this.
I have been using rivnuts all over the place for
non-structural applications (like wire-clamps).
For those of you who are reading and have not
personally installed a rivnut and/or an anchor nut
before, here's the best photo I could find:
http://www.torquecontrol.ltd.uk/photo2.jpg
or
http://www.aircraftspruce.com/catalog/hapages/rivets/rivnuts.jpg
As opposed to an anchor nut:
http://www.aircraftspruce.com/catalog/hapages/bolts/minianchornut.jpg
So - after all that - my question is - does anybody
have a good reason why I should not install rivnuts to
hold down the top forward skin with screws? (Besides
the obvious reason that one or two may spin in the
future - I can get back there to hold them if this
happens).
Thanks in advance for any input,
Scott Laughlin
www.cooknwithgas.com
DO NOT ARCHIVE
---------------------------------
Got holiday prints? See all the ways to get quality prints in your hands ASAP.
| | - The Matronics Zenith-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Zenith-List |
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