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  #11  
Old 06-05-2011, 08:28 AM
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vlittle vlittle is offline
 
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Location: Victoria, Canada
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Quote:
Originally Posted by AussieRV View Post
G'day guys,

I'm about to rivet HS on my -8 together ... and have a "wombat" question. When riveting the HS-609PP's to the HS-603PP ... which side should the shop head be on?

I've looked at numerous builders sights and i've seen the rivet point both directions ... but which is the correct one?

Many thank,

Matt
Common practice is to have the factory head against the thinner material, but there are more important considerations, such as:

-access for bucking or driving the rivet
-the ability to drill out rivets
-ease of inspection
-appearance

In my opinion, access for drilling out rivets is the most important. Not just because a rivet may be bad, but because you may wish to de-rivet an assembly later on.

V
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  #12  
Old 06-05-2011, 01:29 PM
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Vern is entirely correct. There is another consideration, clearance for other assemblies, but that is usually specified in the plans. If flush rivets, pay attention to which side the flush head goes on (I'm not talking skin rivets, I'm talking about rivets used to allow to assemblies to mate flat). Sometimes even the universal head is important because it's height is consistent and usually thinner than the shop head, so read ahead and see what else may go nearby. But if the plans don't specify, then follow the common practices and you won't go wrong.
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  #13  
Old 06-05-2011, 07:21 PM
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AussieRV AussieRV is offline
 
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Excellent - thank you gents for your response.

Cheers,

Matt
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  #14  
Old 06-06-2011, 08:19 AM
gpiney gpiney is offline
 
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Van's Plans are very good at showing you the orientation of the rivets for each assembly. The basic rule is that the shop head should point Inside, Down or Aft. Vans has a lot of exceptions to this rule.
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  #15  
Old 06-06-2011, 09:14 AM
N316RV N316RV is offline
 
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Posts: 123
Default Rivet Removal?

One more thing to consider. If I screw it up, from which side can I drill the shop head the easiest?

Alan Jackson
Hartselle, Alabama
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  #16  
Old 07-06-2011, 08:17 PM
CDBridgesRV7A CDBridgesRV7A is offline
 
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Location: Berwick, Nova Scotia, Canada
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Default Does It Matter Which Side the Shop Head Is On?

Hey Folks,

I just riveted together my rear spar for the HS. I riveted the 609PP and 603PP parts together. For ease of assembly (I used my squeezer) I put the factory heads on the 603PP side, hence the shop head would be on the 609PP side. After looking at some pics from other builders, everyone else did it the other way. Am I now going to have to drill out all those rivets and replace them the other way?

Thanks

Chris
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  #17  
Old 07-06-2011, 08:40 PM
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Default Absolutely NOT!

No hard rule on this. If all else is equal, most people prefer to have the shop head on the side of the thicker material. This creates less distortion. But there is no set rule. Certainly not enough to drill out perfectly good rivets.
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Last edited by Mel : 07-06-2011 at 08:43 PM.
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  #18  
Old 07-06-2011, 09:14 PM
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I agree with Mel.

In general I try to put mine on the thicker material, but I also think about the need for a possible disassembly effort in the future. If I need to drill rivets for some unknown reason in the future, I like having the manufactured head facing me so I know where absolute center is to drill the rivet. This way my chances of enlarging holes goes way down in the future.
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  #19  
Old 07-07-2011, 05:24 AM
CDBridgesRV7A CDBridgesRV7A is offline
 
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Thanks Mel and Phil!

I built my VS first. During the construction of the spar, for that, Vans has you put the factory head on the side with the thin metal, so shop head on thick metal side. They mentioned that typically the factory head goes on the thick metal side. I just wanted to make sure there was no hard rule on this.

Chris
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