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  #1  
Old 09-19-2022, 11:56 AM
NavyS3BNFO NavyS3BNFO is offline
 
Join Date: Sep 2010
Location: Northern NJ
Posts: 122
Default Difficult Nutplate Rivets

I don't know why I had such trouble with these rivets. They attach nut plates that sit right up against the inside of the side skins on the RV-8. I'm sure this isn't the only place or model that have nut plates in locations like this so I'm looking for any hints from the pros.

The problem is I can't get my squeezer on the rivets because they sit up against the side skin and I can't buck them for fear of denting the skin from the inside or deforming the thin angle they attached to. At least I don't think I can buck them - I haven't tried for the above reasons.

Any tips, tricks, something I'm missing? As you can see in the pics I resorted to blind rivets after trying to set them multiple times and mangling the shop heads...
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  #2  
Old 09-19-2022, 12:04 PM
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mill2978 mill2978 is offline
 
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Location: McMinville, OR (KMMV)
Posts: 255
Default Try knipex pliers

I used Knipex pliers to set most of my nut plates. Smooth jaws and parralel action make them a mini squeezer for flush rivets, esp in tight places like those.
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  #3  
Old 09-19-2022, 12:27 PM
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rvanstory rvanstory is offline
 
Join Date: Dec 2016
Location: New Braunfels
Posts: 531
Default

I did 2 things for the situation you describe.

1) Ground the end of my rivet puller flat. Allowed me to get in closer (about 3/32”) to edge. Worked in many situations.

2) For even tighter spots, fabricated a small wedge out of aluminum. Wedge was shaped with about a 20 degree angle (sorry, no pics). Drilled hole in middle just large enough for blind rivet stem. Place rivet where needed, put wedge on top with stem sticking out and thick edge of wedge facing the side with no clearance. Bend stem slightly out to get puller over stem. Press firmly down, then pull the rivet stem to set blind rivet.

Section 5.4 of builders instructions gives details and dimensions for wedge.
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Last edited by rvanstory : 09-19-2022 at 01:00 PM.
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  #4  
Old 09-19-2022, 01:57 PM
NavyS3BNFO NavyS3BNFO is offline
 
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Location: Northern NJ
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Default

Thanks Randy but I'm looking for a way to set solid rivets. I gave up on solid and resorted to using blind rivets in this case.
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  #5  
Old 09-19-2022, 02:15 PM
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GeoffP GeoffP is offline
 
Join Date: Sep 2018
Location: NSW, Australia
Posts: 243
Default Grind or file flat squeezer sets

One thing you could try (if you have excess or some cheap flat squeezer dies laying around), would be to grind or file a small angle onto the dies. This way you should be able to get the squeezer handle at a slight angle while the die surface sits on the rivets. There's similar ground squeezer sets made for elevator & rudder rivets, only in your case you want the flats on the squeezer sets to be parallel.
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  #6  
Old 09-19-2022, 02:17 PM
Stoo Stoo is offline
 
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Location: LL10, Naperville, IL.
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+1 for the parallel action pliers.
Stewart Willoughby, 6 final assembly
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  #7  
Old 09-19-2022, 02:19 PM
CATPart CATPart is offline
 
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couldn't you just tape some stainless sheet scraps up to protect the aluminum while you use your regular tools?
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  #8  
Old 09-19-2022, 04:54 PM
wirejock's Avatar
wirejock wirejock is online now
 
Join Date: Oct 2005
Location: Estes Park, CO
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Default Knipex

Quote:
Originally Posted by mill2978 View Post
I used Knipex pliers to set most of my nut plates. Smooth jaws and parralel action make them a mini squeezer for flush rivets, esp in tight places like those.
2nd that. The big pair will make quick work of #3 rivets. Imcredible tool.
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E-mail: wirejock at yahoo dot com
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Donated 12/01/2021, plus a little extra.
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Disclaimer
I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.
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  #9  
Old 09-19-2022, 07:36 PM
idubrov idubrov is offline
 
Join Date: Mar 2021
Location: San Antonio, TX
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Default

Quote:
Originally Posted by wirejock View Post
2nd that. The big pair will make quick work of #3 rivets. Imcredible tool.
How big is big? Is 10" enough?
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  #10  
Old 09-19-2022, 07:45 PM
wirejock's Avatar
wirejock wirejock is online now
 
Join Date: Oct 2005
Location: Estes Park, CO
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Default Knipex

Quote:
Originally Posted by idubrov View Post
How big is big? Is 10" enough?
My biggest pair are 12". They are my preference for squeezing #3 rivets in spaces where nothing else will fit or when I'm just too lazy to pull out the pneumatics.
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Larry Larson
Estes Park, CO
E-mail: wirejock at yahoo dot com
Builder Blog: http://wirejockrv7a.blogspot.com
Donated 12/01/2021, plus a little extra.
RV-7A #73391, N511RV reserved
Disclaimer
I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.
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