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  #1  
Old 10-20-2014, 01:19 PM
JHartline JHartline is offline
 
Join Date: Dec 2012
Location: Carrollton, GA 5GA2
Posts: 180
Default Section 7, revision 1

Guys,

Revision 1 to section 7 (rudder) has a change on page 07-11. In the added step 5 and Figure 1 it has you final drill #33 the aft-most 6 holes in R-903 - the rudder tip rib. The current holes which I have already final drilled and dimpled per the plans are #40 to match the skin and the rivet call outs on page 7-12, figure 2.

So...what gives? The rivet callout is for a 426AD-3-3 which is a little small for a #33 hole. What did all you smart people do here?

Also, what did you use to get inside the aft part of that tip rib to squeeze those rivets? That's a mighty tight fit!
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  #2  
Old 10-20-2014, 01:25 PM
JHartline JHartline is offline
 
Join Date: Dec 2012
Location: Carrollton, GA 5GA2
Posts: 180
Default Read the posts!!

Answering my own post, but is the intent to use MK-319-BS rivets here? Then the skins will need to be #33 drilled to match the rib.
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James Hartline
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  #3  
Old 10-20-2014, 01:39 PM
rvbuilder2002 rvbuilder2002 is offline
 
Join Date: Jul 2005
Location: Hubbard Oregon
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Default

Yes, the #33 holes are for the installation of MK-319 rivets.
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  #4  
Old 10-20-2014, 08:19 PM
JHartline JHartline is offline
 
Join Date: Dec 2012
Location: Carrollton, GA 5GA2
Posts: 180
Default Thanks for the info

I appreciate your help - much learning in progress.
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James Hartline
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RV-14 - Finish and FWF in progress
T-Bolt IO-390
Maule MX7-180
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  #5  
Old 06-26-2017, 11:55 AM
SabreFlyr SabreFlyr is offline
 
Join Date: Sep 2015
Location: Marion, IN
Posts: 148
Default Reviving an old thread

Don't think I've seen this addressed: what dimple is used for these holes? I have a CS4 dimple set but that's a bit big.
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  #6  
Old 06-26-2017, 01:47 PM
rvbuilder2002 rvbuilder2002 is offline
 
Join Date: Jul 2005
Location: Hubbard Oregon
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Default

We use the MK-319 rivets to replace a AN426AD3 rivet so the same dimple is used. The MK rivet head is just slightly bigger but it is close.
You can very lightly machine countersink the dimple a few thousandths to get a bit better fit.
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  #7  
Old 02-05-2018, 02:33 PM
iamtheari iamtheari is offline
 
Join Date: Nov 2017
Location: ND
Posts: 159
Default

Per the current version of the plans, page 07-12, these are MK-319-BS rivets. Should the skin also be final-drilled #33 for these or is it punched for them?

Also, I've found references to the MK-319-BS rivet being 120 degrees. Should I use a 120-degree dimple die on these 6 holes in the skin?
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  #8  
Old 02-05-2018, 04:20 PM
rvbuilder2002 rvbuilder2002 is offline
 
Join Date: Jul 2005
Location: Hubbard Oregon
Posts: 7,799
Default

You can always try inserting the specified rivet and see if it will go into the hole.
If not, then the hole is not to final size.
In this case, I believe all of the holes are punched .094 for 3/32 rivets. Some people are able to install regular rivets in these holes, so that gives them the option.

If you have 120 deg. dimp. dies for 3/32 rivets they could be used, but I think they are only available for 1/8" (#30 holes)
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