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View Poll Results: Pull Rivets or Solid Rivets?
Pull Rivets 62 33.88%
Solid Rivets 121 66.12%
Voters: 183. You may not vote on this poll

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  #21  
Old 07-29-2021, 11:27 AM
RJK983 RJK983 is offline
 
Join Date: Mar 2017
Location: Scottish Borders
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I canít vote as Iím in the ďsensible mixĒ camp.

Driven flush heads where there is a clear benefit

Driven generally on internal sub assemblies that are built on the bench and are solo builder operations

Pulled where there is a clear benefit

With a lean towards pulled where possible on big skins to allow for single builder working.

But generally flush finished on the outside for all the painting, aesthetic and aerodynamic advantages.
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  #22  
Old 07-29-2021, 09:09 PM
Renfield Renfield is offline
 
Join Date: Feb 2021
Location: Wichita,KS
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Having been a structural engineer for over 35 years Iíd much prefer drivens, despite the extra work.

In my experience blinds donít hold up as well over the long term in joints with significant load transfer and theyíre more prone to corrosion than drivens.

That said itís entirely possible to design for blinds and use drivens in that small number of locations on the airframe that warrant it. Then you just have the cosmetics which everyone will have a different option on.

Thanks to Vanís for continuing to create new airplanes! Iím sure the 15 will be another excellent bird no matter which way they go.
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  #23  
Old 07-29-2021, 09:21 PM
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rcarsey rcarsey is offline
 
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I think a smart mix of both.

I don't know what the performance penalty is for pulled rivets.. eg what the speed difference is between a rv-12 and one of the few rv-12s built with pounded rivets.
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  #24  
Old 07-30-2021, 06:54 AM
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Mel Mel is offline
 
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Location: Dallas area
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Quote:
Originally Posted by rcarsey View Post
I don't know what the performance penalty is for pulled rivets.. eg what the speed difference is between a rv-12 and one of the few rv-12s built with pounded rivets.
There should be no performance penalty for pulled rivets. The only performance penalty would be if round head rivets are used instead of flush. And even then, the speed penalty wouldn't be noticeable at the speeds we're talking.
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  #25  
Old 07-30-2021, 02:12 PM
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bhassel bhassel is offline
 
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Personally, I've driven and pulled. I think I prefer pulled for a number reasons most already mentioned in the posts.

Bob
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  #26  
Old 07-31-2021, 08:20 AM
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cgeyman cgeyman is offline
 
Join Date: Apr 2017
Location: Missoula MT
Posts: 134
Default Mix

Flush on wings; pulled on fuselage and hard to reach areas😊
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  #27  
Old 07-31-2021, 10:19 AM
David Z David Z is offline
 
Join Date: Aug 2010
Location: Thunder Bay Ontario
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I think a lot of planes end up in a similar style to that. Driven rivets in the easy and medium spots. Pulled rivets in the hard - impossible spots. Frequently threads appear asking "how do I buck these...". Usually an answer appears with either CherryMax rivets or one MK-319-BS in a tricky spot in a line of solid rivets (small rib noses, etc.). CherryMax are significantly more expensive than normal pulled rivets used by Van's, so there is that to consider I suppose.
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  #28  
Old 07-31-2021, 10:34 AM
scsmith scsmith is offline
 
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Location: Ashland, OR
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Quote:
Originally Posted by Renfield View Post
...
In my experience blinds donít hold up as well over the long term in joints with significant load transfer and theyíre more prone to corrosion than drivens.
...
There is a very important point here that no one else has mentioned. A back country airplane is exposed to a harsher environment, more often. Pulled rivets are an open door to environmental attack. Moisture and crud (which holds the moisture in longer) are inevitably going to get into pulled rivets. Bad juju.
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  #29  
Old 08-01-2021, 09:53 PM
FlyNSoCal FlyNSoCal is offline
 
Join Date: Jul 2021
Location: Southern California
Posts: 17
Default Pull Rivet for Solo Build

I'm fine with a mix of pull and solid, providing the solid rivets can be installed without the need for a 2nd person to buck the rivets. I think it would save lots of hassle if the rivets can be installed solo. I've heard the stories about how fun it is to enlist assistance from others, but some of us don't have an abundance of skilled, or even unskilled help.
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  #30  
Old 08-02-2021, 03:46 AM
ksauce ksauce is offline
 
Join Date: Mar 2006
Location: Lititz, PA
Posts: 199
Default Why not both?

I think this is a false choice. The SPA Panther's design allows the builder to choose their style of rivet. In fact, not only can you choose between solid or pulled rivets, you can also choose between flush or protruding. Some folks elect to mix and match.
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