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03-17-2016, 08:02 AM
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Join Date: Dec 2009
Location: Montreal
Posts: 1,456
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Need a magic rivet
I have a dimple that is too deep on my turtle deck skin. The rivet sits just below the surface and it won't pull down. Does anyone have a clever trick, like some sort of shim under a rivet head, to make it stick proud, or a rivet with a slightly larger head? Or some new swear words that work better than the ones I am using?
thanks
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Scott Black
Old school simple VFR RV 4, O-320, wood prop, MGL iEfis Lite
VAF dues 2020
Instagram @sblack2154
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03-17-2016, 08:11 AM
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Join Date: Oct 2006
Location: Garden City, Tx
Posts: 5,145
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Step it up to the next size?
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Greg Niehues - SEL, IFR, Repairman Cert.
Garden City, TX VAF 2020 dues paid 
N16GN flying 700 hrs and counting; IO360, SDS, WWRV200, Dynon HDX, 430W
Built an off-plan RV9A with too much fuel and too much HP. Should drop dead any minute now.
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03-17-2016, 08:13 AM
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Join Date: Jul 2005
Location: Hubbard Oregon
Posts: 9,035
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Quote:
Originally Posted by sblack
I have a dimple that is too deep on my turtle deck skin. The rivet sits just below the surface and it won't pull down. Does anyone have a clever trick, like some sort of shim under a rivet head, to make it stick proud, or a rivet with a slightly larger head? Or some new swear words that work better than the ones I am using?
thanks
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A little more info would be helpful....
Since it is not really possible to dimple countersink too deep, is this a hole that you machine countersink? Was it done in an incorrect size (1/8" vs 3/32")?
Etc.
__________________
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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03-17-2016, 09:31 AM
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Join Date: May 2006
Location: LL10, Naperville, IL.
Posts: 68
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Easy to fix if you have access to a lathe. Chuck up a long -4 and machine it down to -3 with a larger head.
Stewart Willoughby, 6, FWF.
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03-17-2016, 10:09 AM
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Join Date: Jul 2005
Posts: 1,346
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Re-dimple it?
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Mike W
Venice, FL
RV-6A. Mattituck TMX O-360, FP, GRT Sport EFIS, L3 Lynx NGT-9000
N164WM
N184WM reserved (RV-8)....finishing kit in progress. Titan IOX-370
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03-17-2016, 11:23 AM
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Join Date: Nov 2014
Location: Richmond Hill, GA (KLHW)
Posts: 2,189
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Unclear...
What is meant by "won't pull down?"
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Ray
RV-7A - Slider - N495KL - First flt 27 Jan 17
O-360-A4M w/ AFP FM-150 FI, Dual PMags, Vetterman Trombone Exh, SkyTech starter, BandC Alt (PP failed after 226 hrs)
Catto 3 blade NLE, FlightLines Interior, James cowl, plenum & intake, Anti-Splat -14 seat mod and nose gear support
All lines by TSFlightLines (aka Hoser)
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03-17-2016, 11:53 AM
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Join Date: Mar 2005
Location: Dallas area
Posts: 10,768
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Quote:
Originally Posted by Raymo
What is meant by "won't pull down?"
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I'm sure he means that the rivet sits flush with the skin and won't drive down into the dimple. Since the rivet set stops at the skin surface, it won't push the rivet down below the surface.
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Mel Asberry, DAR since the last century.
EAA Flight Advisor/Tech Counselor, Friend of the RV-1
Recipient of Tony Bingelis Award and Wright Brothers Master Pilot Award
USAF Vet, High School E-LSA Project Mentor.
RV-6 Flying since 1993 (sold)
<rvmel(at)icloud.com>
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03-17-2016, 11:57 AM
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Join Date: Dec 2009
Location: Montreal
Posts: 1,456
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It was dimpled, then I shimmed a poor fitting bulkhead with filled epoxy and used a counterskink to clean out the dimple. Sort of a liquid shim, which works very well. But I over did the cleaning out part. It really doesn't take much. a thou or 2 and the rivet sits too low. I could turn down a rivet I suppose. I have a lathe. But I was wondering if there were any other tricks of the trade out there.
__________________
Scott Black
Old school simple VFR RV 4, O-320, wood prop, MGL iEfis Lite
VAF dues 2020
Instagram @sblack2154
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03-17-2016, 12:06 PM
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Join Date: Jul 2012
Location: Bartlesville, OK
Posts: 237
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It seems that an easy fix would be to drill it up to .128", shoot a #4 rivet in it, then shave the head flush to the surface. Most areas have sufficient edge distance (~.25") for a 4.
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Andrew Austin
RV-10
-Flying!
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03-17-2016, 12:44 PM
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Join Date: Jul 2005
Location: Hubbard Oregon
Posts: 9,035
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In this type of situation I have used a small shim close the the diam of the rivet head.
I have only done this setting a rivet with a squeezer but with care it would probably work with a gin also. I would tape the spacer in place.
An easy way to make the spacers is with a Whitney punch, if you have one or can borrow one. Use the punched out portion of a hole punched in some scrap .016 material.
__________________
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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