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Rivnuts instead of self-tapping screws on canopy hoops?

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craig(at)craigandjean.com
Guest

Posted: Tue Oct 02, 2007 11:51 am Post subject: Rivnuts instead of self-tapping screws on canopy hoops?

Has anybody tried using rivnuts to hold the canopy to the hoops instead of

the self-tapping screws? I've got a few stripped holes and wonder if rivnuts

could be used for repair or in the original build. One problem I see is that

the shoulder of the rivnut could be a stress point. The self-tapping screws

hold the canopy against the smooth hoop.



-- Craig

Gig Giacona

Joined: 10 Jan 2006
Posts: 1416
Location: El Dorado Arkansas USA

Posted: Tue Oct 02, 2007 12:14 pm Post subject: Re: Rivnuts instead of self-tapping screws on canopy hoops?

I think your concern is correct. I'd try a larger screw first.



 	  craig(at)craigandjean.com wrote: 	
		  Has anybody tried using rivnuts to hold the canopy to the hoops instead of

the self-tapping screws? I've got a few stripped holes and wonder if rivnuts

could be used for repair or in the original build. One problem I see is that

the shoulder of the rivnut could be a stress point. The self-tapping screws

hold the canopy against the smooth hoop.



-- Craig

_________________
W.R. "Gig" Giacona
601XL Under Construction
See my progress at www.peoamerica.net/N601WR

vjvus(at)yahoo.com
Guest

Posted: Tue Oct 02, 2007 12:37 pm Post subject: Rivnuts instead of self-tapping screws on canopy hoops?

Craig, At Oshkosh this year I noticed the factory

assembled 601XL in the Sports Planes area had soft

aluminum pop rivets holding the canopy to the tubes

and the side frames. I talked to the factory guy  who

said they were having no problems using the soft rivet

with aluminum body and mandrel.

--- Craig Payne <craig(at)craigandjean.com> wrote:



 	  Quote: 	
		   

 <craig(at)craigandjean.com>

 

 Has anybody tried using rivnuts to hold the canopy

 to the hoops instead of

 the self-tapping screws? I've got a few stripped

 holes and wonder if rivnuts

 could be used for repair or in the original build.

 One problem I see is that

 the shoulder of the rivnut could be a stress point.

 The self-tapping screws

 hold the canopy against the smooth hoop.

 

 -- Craig

 

 



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craig(at)craigandjean.com
Guest

Posted: Tue Oct 02, 2007 12:47 pm Post subject: Rivnuts instead of self-tapping screws on canopy hoops?

 	  Quote: 	
		  At Oshkosh this year I noticed the factory assembled 601XL in the Sports

Planes area had soft aluminum pop rivets holding the canopy to the tubes and
	


the side frames.



Thanks, I had considered that approach too but didn't want to be the first

guy to try it 



Did they use any washers under the head of the rivets?



-- Craig



do not archive

lrepilot(at)yahoo.com
Guest

Posted: Tue Oct 02, 2007 12:56 pm Post subject: Rivnuts instead of self-tapping screws on canopy hoops?

I tapped the holes and used 6-32 button head cap

screws with a clear plastic washer under the head

--- Gig Giacona <wr.giacona(at)suddenlink.net> wrote:



 	  Quote: 	
		   

 <wr.giacona(at)suddenlink.net>

 

 I think your concern is correct. I'd try a larger

 screw first.

 

 

 craig(at)craigandjean.com wrote:

 > Has anybody tried using rivnuts to hold the canopy

 to the hoops instead of

 > the self-tapping screws? I've got a few stripped

 holes and wonder if rivnuts

 > could be used for repair or in the original build.

 One problem I see is that

 > the shoulder of the rivnut could be a stress

 point. The self-tapping screws

 > hold the canopy against the smooth hoop.

 > 

 > -- Craig

 

 

 --------

 W.R. &quot;Gig&quot; Giacona

 601XL Under Construction

 See my progress at www.peoamerica.net/N601WR

 

 

 

 

 Read this topic online here:

 



http://forums.matronics.com/viewtopic.php?p=137673#137673
	


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craig(at)craigandjean.com
Guest

Posted: Tue Oct 02, 2007 1:08 pm Post subject: Rivnuts instead of self-tapping screws on canopy hoops?

 	  Quote: 	
		   I tapped the holes and used 6-32 button head cap screws with a clear

plastic washer under the head
	




Interesting idea. I'm surprised you got enough threads in the tube's thin

wall to hold. Any pictures?



-- Craig



do not archive

John Bolding

Joined: 23 May 2006
Posts: 281

Posted: Tue Oct 02, 2007 1:12 pm Post subject: Rivnuts instead of self-tapping screws on canopy hoops?

Did that on my RV3 about 35 yrs/2000 hrs ago, no  cracks so far but testing continues.

  

 LOW&SLO    John

 [quote]   

 	  Quote: 	
		  At Oshkosh this year I    noticed the factory assembled 601XL in the Sports

Planes area had soft    aluminum pop rivets holding the canopy to the tubes and
	


the side    frames.



Thanks, I had considered that approach too but didn't want to    be the first

guy to try it 



Did they use any washers under the    head of the rivets?



-- Craig



do not    nbsp;        Features  Subscriptions    href="http://www.matronics.com/Navigator?Zenith-List">http://www.matron=======================

bsp;   available via    href="http://forums.matronics.com">http://forums.matronics.com

_-===================================





[b]

craig(at)craigandjean.com
Guest

Posted: Tue Oct 02, 2007 1:27 pm Post subject: Rivnuts instead of self-tapping screws on canopy hoops?

 	  Quote: 	
		   It would be more simple safe and easy to drill all the way through the

tube and engage a K1000-6 nutplate. 
	




I wonder if the extra holes would appreciable weaken the tube more than just

the single row of outside holes? But then again the riveted nutplate would

strengthen the hoop.



-- Craig

planecrazydld(at)yahoo.co
Guest

Posted: Tue Oct 02, 2007 1:38 pm Post subject: Rivnuts instead of self-tapping screws on canopy hoops?

Then use "Well-nuts®" they work like a Rivnut but are rubber and shock absorbing.

 

  Dave Downey

 Harleysville (SE) PA

 100 HP Corvair



 



 ---

planecrazydld(at)yahoo.co
Guest

Posted: Tue Oct 02, 2007 6:22 pm Post subject: Rivnuts instead of self-tapping screws on canopy hoops?

To: zenith-list(at)matronics.com

Sent: Tuesday, October 2, 2007 5:33:38 PM

Subject: Re: Re: Rivnuts instead of self-tapping screws on canopy hoops?

 Then use "Well-nuts®" they work like a Rivnut but are rubber and shock absorbing.

  Dave Downey

 Harleysville (SE) PA

 100 HP Corvair

 ---

vjvus(at)yahoo.com
Guest

Posted: Wed Oct 03, 2007 6:38 am Post subject: Rivnuts instead of self-tapping screws on canopy hoops?

No washers under rivet heads.

--- John Bolding <jnbolding1(at)teleshare.net> wrote:



 	  Quote: 	
		   Did that on my RV3 about 35 yrs/2000 hrs ago, no

 cracks so far but testing continues.

 

 LOW&SLO    John

 

 

 

   >At Oshkosh this year I noticed the factory

 assembled 601XL in the Sports

   Planes area had soft aluminum pop rivets holding

 the canopy to the tubes and

   the side frames.

 

   Thanks, I had considered that approach too but

 didn't want to be the first

   guy to try it 

 

   Did they use any washers under the head of the

 rivets?

 

   -- Craig

 

   do not archive

John Bolding

Joined: 23 May 2006
Posts: 281

Posted: Wed Oct 03, 2007 7:21 am Post subject: Rivnuts instead of self-tapping screws on canopy hoops?

Actually I used countersunk alum pops (and  countersunk the canopy) as there was an epoxy /glass canopy skirt that  went on top of the rivets and I didn't want any bumps,  those kind of  things hold little importance now while building the 701,  the  whole thing is a bump.   John

 [quote]   ---

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