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10-20-2014, 12:19 PM
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Join Date: Dec 2012
Location: Carrollton, GA 5GA2
Posts: 259
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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!
__________________
James Hartline
Carrollton, GA 5GA2
RV-14 - First flight 4/7/2019. Phase I complete as of 9/11/2019!!
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10-20-2014, 12:25 PM
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Join Date: Dec 2012
Location: Carrollton, GA 5GA2
Posts: 259
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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.
__________________
James Hartline
Carrollton, GA 5GA2
RV-14 - First flight 4/7/2019. Phase I complete as of 9/11/2019!!
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10-20-2014, 12:39 PM
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Join Date: Jul 2005
Location: Hubbard Oregon
Posts: 9,035
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Yes, the #33 holes are for the installation of MK-319 rivets.
__________________
Opinions, information and comments are my own unless stated otherwise. They do not necessarily represent the direction/opinions of my employer.
Scott McDaniels
Van's Aircraft Engineering Prototype Shop Manager
Hubbard, Oregon
RV-6A (aka "Junkyard Special ")
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10-20-2014, 07:19 PM
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Join Date: Dec 2012
Location: Carrollton, GA 5GA2
Posts: 259
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Thanks for the info
I appreciate your help - much learning in progress.
__________________
James Hartline
Carrollton, GA 5GA2
RV-14 - First flight 4/7/2019. Phase I complete as of 9/11/2019!!
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06-26-2017, 10:55 AM
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Join Date: Sep 2015
Location: Marion, IN
Posts: 231
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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.
__________________
Ray Dosh
LJ45 driver
RV-14 QB #140212
Tail feathers finished
Tail cone in progress
2020 DUES PAID
Marion, IN MZZ
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06-26-2017, 12:47 PM
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Join Date: Jul 2005
Location: Hubbard Oregon
Posts: 9,035
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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.
__________________
Opinions, information and comments are my own unless stated otherwise. They do not necessarily represent the direction/opinions of my employer.
Scott McDaniels
Van's Aircraft Engineering Prototype Shop Manager
Hubbard, Oregon
RV-6A (aka "Junkyard Special ")
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02-05-2018, 01:33 PM
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Join Date: Nov 2017
Location: ND
Posts: 452
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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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02-05-2018, 03:20 PM
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Join Date: Jul 2005
Location: Hubbard Oregon
Posts: 9,035
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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)
__________________
Opinions, information and comments are my own unless stated otherwise. They do not necessarily represent the direction/opinions of my employer.
Scott McDaniels
Van's Aircraft Engineering Prototype Shop Manager
Hubbard, Oregon
RV-6A (aka "Junkyard Special ")
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