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  #11  
Old 01-27-2012, 09:59 AM
alpinelakespilot2000 alpinelakespilot2000 is offline
 
Join Date: Jan 2005
Posts: 3,646
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Just countersink a bit deeper than normal, use pulled rivets, and then bury it with microballoons. Then, you'll never see the platenut rivets at all.
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Ellensburg WA
RV-9 Flying, 0-320, Catto

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  #12  
Old 01-27-2012, 11:29 AM
Roy Thoma's Avatar
Roy Thoma Roy Thoma is offline
 
Join Date: Aug 2011
Location: Hillsboro, OR
Posts: 154
Default You can drill and tap flox as an alternative to a nut plate

Leighton, our local fiberglass guru showed me that a flox mixture (flocked cotton mixed with epoxy) can be drilled an tapped. I secured my wing tip lenses by putting a blob of "flox" on the inside of the corner, and drilling / tapping for #6 screw after the epoxy had cured. Two screws per lens. (Scuff and clean the surface before putting the epoxy on, build a dam with packing tape to help shape the flox mixture if desired).

I'm not recommending this to replace ALL nut plates, but this is a low stress area that is already fiberglass and the drilled / tapped flox works well here.

Regards,
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Roy

N174RT (RV-7A) first flight 5/31/11, 1780hrs as of August 2020:
Tip-up, Lycon IO-360 EXP, WW 74HRT, AFS 5600T, AF-Pilot, IFD440, SL-30, echoUAT, D100 for backup, CQ1 headsets, CMW E-Lift

Our other riveted aluminum monocoque RV is a 25' Airstream

Past aluminum monocoque vehicles:
N601RT (CH601HDS) First flight 5/03, 1550hrs after flying 8 years: 912ULS, GNS430W, SL-30, D10A Sold
1995 Midnight Pearl NSX w/BBSC Sold

EAA Chapter 105 board member 2010->2015
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  #13  
Old 01-27-2012, 02:52 PM
Jamie Aust's Avatar
Jamie Aust Jamie Aust is offline
 
Join Date: May 2005
Location: Brisbane Australia
Posts: 568
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Quote:
Originally Posted by alex48 View Post
Very nice but do you think 1 screw will hold it? I saw pictures on the forum where they used 18 nut plates per wing.
So far so good. Mine has over 60hrs with no problem. Other Rvs on our field are the same with many more hrs than mine. Just do it as per plans and you should be fine.
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Jamie lee
Brisbane, Australia
RV7A - Now Flying.
0-360,carb,catto 3 blade.
VH-XJL
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  #14  
Old 01-28-2012, 02:58 PM
alex48 alex48 is offline
 
Join Date: Nov 2011
Location: Port Orange, fl
Posts: 7
Default Lenses

Thanks or the help. I guess I have to start all over since I already drill it for too many nut plates. I will get new lenses and start all over.
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  #15  
Old 01-28-2012, 04:12 PM
chaskuss chaskuss is offline
 
Join Date: Mar 2005
Location: SE Florida
Posts: 1,499
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Quote:
Originally Posted by rzbill View Post
I bought a bag of PASK302 rivets (3/32" c'sunk flat head blind) from Hanson Rivet and Supply for jobs like this. Very handy.

www.hansonrivet.com
Bill, Thanks for the link to Hanson Rivet & Supply. I would think that their PAAD302 rivets [aluminum shank] would be a safer choice for use in fiberglass. The pull pressure is 40 psi lower for the PAAD302 rivets. Less likely to crack the fiberglass, with the lower pull pressure.
Charlie

Last edited by chaskuss : 01-29-2012 at 02:11 AM. Reason: changed lb to psi
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