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07-09-2018, 05:52 PM
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Join Date: Oct 2010
Location: Elkton, Md.
Posts: 1,652
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Filled rivet heads
Does anyone remember what Geico (Larry Geiger) used to fill the rivet heads on the Rv12 he built?
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Wag Aero Sport Trainer built,sold and wrecked
N588DF RV12 #336 built, sold and alive and well in New York
N73DF RV12 #244 built, sold and alive and well in Florida
N91 RV RV9 I wish I could say I built this one! Mark Santoleri hit the ball out of the park on this gem.
Currently restoring a 1978 Citabria GCBC
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07-09-2018, 05:57 PM
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Join Date: Apr 2008
Location: Riley TWP MI
Posts: 3,070
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I remember that he used a syringe. I do not remember what was in it.
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Joe Gores
RV-12 Flying
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07-09-2018, 06:02 PM
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Join Date: Apr 2008
Location: Riley TWP MI
Posts: 3,070
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I did a google search for "syringe vansairforce geico" without quotes and found THIS thread. Larry mentioned Superfil.
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Joe Gores
RV-12 Flying
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07-09-2018, 07:39 PM
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Join Date: Dec 2009
Location: Boulder, CO
Posts: 4,435
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I've heard of using 3M's 2216 epoxy from a syringe.
Dave
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07-10-2018, 02:55 AM
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Join Date: Mar 2009
Location: Austin, Texas
Posts: 306
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I used colored epoxy
I used a rather fine-gauge syringe with the plain old west system resin/hardener I used on the fiberglass. I found it difficult to see how much epoxy was going in the hole, so I used some colorant (comes in a tube from West) to give it some opacity. Since my rivet puller tended to leave a burr on the mandrel hole, I gently demurred the hole before filling with epoxy. If the epoxy is a little too high, it can then be easily sliced off with a blade after curing. (If there is a burr, it makes sliced the excess off a real pain). It sounds, and is, tedious, but I would guesstimate I did the exterior rivets on the entire plane in about eight hours, and I?m quite pleased with the results after painting.
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Rob Reese
RV-12 #120332 N73HR
Austin, TX
TangoFlight Mentor
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07-10-2018, 09:40 AM
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Join Date: Jan 2005
Location: Bellevue, NE
Posts: 524
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I ran into Larry a few weeks ago and that very subject came up. He used a syringe and needle from a farm supply store and injected micro into the rivet heads. Subject came up while he was looking at the local Aviation Nation RV-12 teen build that I?m helping with.
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Bob
RV-10 builder x2
RV-7A under construction
EAA Tech Counselor
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07-10-2018, 11:45 AM
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Join Date: Jul 2009
Location: Coeur d'Alene, ID/Casa Grande, AZ
Posts: 654
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I can verify that filling rivets will add .0001 knots to cruise speed 🤓
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Ric Dickison
307 (CAB) Phantom
Search and Destroy (Can Tho RVN)
Distinguished Flying Cross Society Member
CH-47 & UH-1H "Driver"
Rotax 9 Series Service IRMT
RV-12 Kit#729 "N312RD" is now a full functioning fun machine!! Thanks Van for fulfilling my dream😎
2018 Dues Paid
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07-10-2018, 09:43 PM
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Join Date: Jan 2005
Location: Irvine, CA
Posts: 873
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Is appearance the only reason to fill the rivet heads? Is there a practical reason, like keeping water out of the wings and fuselage when it rains or preventing loose mandrels from falling out?
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Mark
RV-12iS Fuselage
RV-9A Project: Sold
VAF donation made for 2020
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07-10-2018, 10:01 PM
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Join Date: Oct 2010
Location: Phoenix, AZ
Posts: 2,820
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Looks like the answer to the question nobody asked!😜
Definitely more work than I want to do.
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07-11-2018, 03:12 AM
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Join Date: Mar 2009
Location: Netherlands
Posts: 663
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Quote:
Originally Posted by rv9builder
Is appearance the only reason to fill the rivet heads? Is there a practical reason, like keeping water out of the wings and fuselage when it rains or preventing loose mandrels from falling out?
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The reason for me to fill the rivet heads was to keep the dirt out. I saw an aircraft with unfilled rivets and that particular plane had black strips running from the rivets.
It took about 40 hours to fill/sand all rivets, not that bad.
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