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Rivet puller problems

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Harvey Richards

Joined: 26 Aug 2008
Posts: 39
Location: Nova Scotia

Posted: Mon Dec 22, 2008 12:33 pm Post subject: Rivet puller problems

Would anyone have any ideas on the following hand rivet puller problems. About every 5th or so A5 rivet has a sharp stem protrusion a mm or so and some are breaking off with 10 mm or so protruding with the same sharp angle. I have disassembled and  lightly lubricated and it still happens. A4 rivets pull ok.  Thanks         Do not archive

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CH 701

Ed T

Joined: 13 Dec 2008
Posts: 6
Location: Mahtomedi, MN

Posted: Tue Dec 23, 2008 9:01 pm Post subject: Re: Rivet puller problems

Harvey,



I was having similar problems with my almost new hand riveter, but the rivet stems broke off higher...10-15mm.  It happens about once every 10 rivets.



Tonight, the darned thing broke, and won't pull any rivets.  I will replace the jaws if I can locate the spares in my cluttered shop.



My new pneumatic riveter also breaks off the occasional A5, but never has a problem with A4's.  That also happens about once every 8-10 rivets.



I asked Zenith, and they said they have not been having reports of problems.  So I just popped the stems off with a pliers, and continued to build.



I'd be curious to see if they have a bad batch of rivets.



Merry Christmas!



Ed Trudeau

750 tail done

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Ed Trudeau
Tail Done
Semper Fi

lrm(at)skyhawg.com
Guest

Posted: Wed Dec 24, 2008 7:25 am Post subject: Rivet puller problems

I believe you could be holding it an an angle or not holding it down 

firm.  Here's a little suggestion I use and it helps keep the riveter 

head from bouncing off and marking your aluminum and popping the stem 

too early.  The reason I am mentioning this is because sometimes when 

you put pressure hard down on the head, it will bounce when it pops, you 

will get a nice little dent next to your rivet. What happens is that you 

end up holding your riveter up or pulling away too fast and it pops the 

stem off without tightening the rivet. I hope that makes sense.  Anyway 

get a piece of soft leather and cut a small hole in it to surround the 

rivet.  When it bounces, it will bounce on the leather.  Keep downward 

pressure until it pops.  Take care, Larry



Ed T wrote:

 	  Quote: 	
		   

 

 Harvey,

 

 I was having similar problems with my almost new hand riveter, but the rivet stems broke off higher...10-15mm.  It happens about once every 10 rivets.

 

 Tonight, the darned thing broke, and won't pull any rivets.  I will replace the jaws if I can locate the spares in my cluttered shop.

 

 My new pneumatic riveter also breaks off the occasional A5, but never has a problem with A4's.  That also happens about once every 8-10 rivets.

 

 I asked Zenith, and they said they have not been having reports of problems.  So I just popped the stems off with a pliers, and continued to build.

 

 I'd be curious to see if they have a bad batch of rivets.

 

 Merry Christmas!

 

 Ed Trudeau

 750 tail done

 

 --------

 Ed Trudeau

 Tail Done

 Semper Fi

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p 20874#220874

 

 

 

 

 

 

 

 

 

 

 

 

 ------------------------------------------------------------------------

 

 

 Checked by AVG - http://www.avg.com

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Iberplanes

Joined: 10 Dec 2007
Posts: 174
Location: Igualada - Barcelona - Spain

Posted: Wed Dec 24, 2008 7:35 am Post subject: Rivet puller problems

mmmmm, it seems you need to use the right pressure from your compressor.

Read the manual of your riveter and you´ll find the supposed PSI to work

without problems.



bye.



2008/12/24 Larry <lrm(at)skyhawg.com>



[quote] 



 I believe you could be holding it an an angle or not holding it down firm

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Alberto Martin
601 XL - Jabiru 3300
http://www.iberplanes.es
Igualada - Barcelona - Spain

raymondj(at)frontiernet.n
Guest

Posted: Wed Dec 24, 2008 8:04 am Post subject: Rivet puller problems

Is it possible that the jaws on your puller are scoring the stem deeply 

enough that the stem is pulling apart where the jaws grab it.   Do the ends 

of the stems look like they have been scored on each side and then broken or 

stretched to failure in the remaining cross sectional area?



Raymond Julian

Kettle River, MN



"Hope for the best,

but prepare for the worst."



---

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Harvey Richards

Joined: 26 Aug 2008
Posts: 39
Location: Nova Scotia

Posted: Wed Dec 24, 2008 8:24 am Post subject: Re: Rivet puller problems

Will try to make sure it is square and tight to rivet and surface. The rivet gun is the one zenith sells and only has a 1000 or so A4s pulled and very few A5s. No air pressure problems as I have a compressor but no pneumatic rivet gun.  Thanks for replies.

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CH 701

NYTerminat(at)aol.com
Guest

Posted: Wed Dec 24, 2008 11:08 am Post subject: Rivet puller problems

Harvey, Another suggestion is to not to use too much air pressure, so that  it won't bounce.

 Bob Spudis

 N701ZX

  

  

 In a message dated 12/24/2008 10:25:58 A.M. Eastern Standard Time,  lrm(at)skyhawg.com writes:

  	  Quote: 	
		  -->    Zenith701801-List message posted by: Larry <lrm(at)skyhawg.com>



I    believe you could be holding it an an angle or not holding it down    

firm.  Here's a little suggestion I use and it helps keep the riveter    

head from bouncing off and marking your aluminum and popping the stem    

too early.  The reason I am mentioning this is because sometimes when    

you put pressure hard down on the head, it will bounce when it pops, you    

will get a nice little dent next to your rivet. What happens is that you    

end up holding your riveter up or pulling away too fast and it pops the    

stem off without tightening the rivet. I hope that makes sense.     Anyway 

get a piece of soft leather and cut a small hole in it to surround    the 

rivet.  When it bounces, it will bounce on the leather.     Keep downward 

pressure until it pops.  Take care,  Larry

	


 

  



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