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05-31-2008, 09:56 PM
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Join Date: Jul 2007
Location: Mesquite, TX
Posts: 936
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I've boxed myself in...
I was following the directions the plans gave, and I guess I wasnt thinking or overlooked these holes, but now I've boxed myself in... This is the rudder, on the holes that rivet the skin, counterweight skins, and spar. What should I do? Drill out all these rivets and re-do?  I did the same thing on both sides, so its six holes total. Should I just use MK-319-BS blind rivets to fix these 6 holes?
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05-31-2008, 10:37 PM
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Join Date: Oct 2007
Location: Oyen, Ab
Posts: 173
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You probably could use the mk 319 bs rivets there. I personally don't see why you couldn't. Mostly cosmetics. If it were me, i would probably drill (very carefully) all of the rivets out of the tip and remove it too get in there and use the proper rivets. Don't sweat it is not that big of an opps, and either fix will work just fine.
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05-31-2008, 10:45 PM
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Join Date: Jul 2007
Location: Mesquite, TX
Posts: 936
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will the 319's be long enough? The plans are calling for AN426AD3-4's. I know the 319's have been used in place of -3.5's but not sure about the -4's...
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05-31-2008, 11:42 PM
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Join Date: Jan 2005
Location: 57AZ - NW Tucson area
Posts: 10,011
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Grip length
Quote:
Originally Posted by danielhv
will the 319's be long enough? The plans are calling for AN426AD3-4's. I know the 319's have been used in place of -3.5's but not sure about the -4's...
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It's good to 0.070 grip length...
http://oemfasteningsystems.thomasnet...=prod&filter=0
How thick is the combination of sheets here?
gil A
__________________
Gil Alexander
EAA Technical Counselor, Airframe Mechanic
Half completed RV-10 QB purchased
RV-6A N61GX - finally flying
Grumman Tiger N12GA - flying
La Cholla Airpark (57AZ) Tucson AZ
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06-01-2008, 06:39 AM
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Join Date: Oct 2007
Location: Oyen, Ab
Posts: 173
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MK-319-BS
Correct, I overlooked the thickness of the material. Calipered thickness of the sheets on my particular rudder is .092 thick. Clearly MK-319-bs is not suitable in this application.
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06-01-2008, 07:39 AM
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Join Date: Jul 2007
Location: Mesquite, TX
Posts: 936
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mmmkay, so what now? Drill all those rivets out or order some MK-419-BS'.
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06-01-2008, 09:43 AM
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Join Date: Jan 2006
Location: Tucson, AZ
Posts: 818
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I had to remove the top rib rivets
Quote:
Originally Posted by danielhv
mmmkay, so what now? Drill all those rivets out or order some MK-419-BS'.
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The flange angles on my top rib weren't perfect and it caused cosmetic problems with the skins at the tip. So I debated for a few years and just recently removed the rib (drilled out the rivets), rebent the flanges and reinstalled the rib. Wasn't that big a problem. The only recommendation is to pre-squeeze the rivets prior to setting them.
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Dream it, Build it, Fly it
Paul Merems (EAA Tech Counselor, EAA Sheetmetal Workshop Instructor/Volunteer 12 yrs)
ExperimentalAero- HANGAR BANNERS
www.experimentalaero.com
RV-7A (Flying since 2010)/RV-4 (sold 1990)
Tucson, Arizona 85749
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06-01-2008, 09:56 AM
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Join Date: Aug 2005
Location: Pasadena CA
Posts: 2,484
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I'd use blind rivets, that area would suck to do the second time around, unless you nail the drilling out process, which most people don't.
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Stephen Samuelian, CFII, A&P IA, CTO
RV4 wing in Jig @ KPOC
RV7 emp built
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06-01-2008, 04:28 PM
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Join Date: Jan 2005
Location: Twin Cities, MN
Posts: 1,565
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Personally, I'd just use the MK-419-BS blind rivets and be done with it. Yeah, solid rivets would look better, but I've made things worse more than once by trying to drill out perfectly good rivets in order to replace a blind rivet with a solid one.
I have blind rivets in several visible places on my project thus far, and if someone points them out and says they look bad then...to quote Kahuna..."they will be kicked, then ignored"  .
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Brad Benson, Maplewood MN.
RV-6A N164BL, Flying since Nov 2012!
If you're not making mistakes, you're probably not making anything
Last edited by ChiefPilot : 06-01-2008 at 07:00 PM.
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06-01-2008, 04:49 PM
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Join Date: Jan 2005
Location: 57AZ - NW Tucson area
Posts: 10,011
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not MK-319-BS
Quote:
Originally Posted by ChiefPilot
Personally, I'd just use the MK319 blind rivets and be done with it. Yeah, solid rivets would look better, but I've made things worse more than once by trying to drill out perfectly good rivets in order to replace a blind rivet with a solid one.
I have blind rivets in several visible places on my project thus far, and if someone points them out and says they look bad then...to quote Kahuna..."they will be kicked, then ignored" . |
Yes... but I wouldn't use MK-319-BS rivets outside of the suggested application of the manufacturer.... 
As a previous poster mentioned, get some MK-419-BS which have a grip length of 0.100 inches.
Use the correct part for the application....
__________________
Gil Alexander
EAA Technical Counselor, Airframe Mechanic
Half completed RV-10 QB purchased
RV-6A N61GX - finally flying
Grumman Tiger N12GA - flying
La Cholla Airpark (57AZ) Tucson AZ
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