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08-23-2006, 08:09 AM
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Join Date: Jan 2005
Location: albuquerque, nm
Posts: 1,167
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ProSeal ring around tank rivets
The recent thread about paint blistering on fuel tank rivets made me wonder about something on my own tanks.
After each ProSeal session on my tanks, I cleaned the outside of the skin pretty thoroughly. I do however, have a small ring of sealant visible around every rivet head. Is this normal, or should I have worked harder to make sure I got every bit of visible sealant out of the dimples? It's too late now, but I still have to ask.
TIA,
Guy
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08-23-2006, 08:16 AM
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Join Date: Jun 2005
Location: Milwaukee, WI area
Posts: 2,967
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Normal. Proseal is easily painted and won't be the cause of any paint defects.
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Chad Jensen
Astronics AES, Vertical Power
RV-7, 5 yr build, flew it 68 hours, sold it, miss it.
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08-23-2006, 08:17 AM
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Join Date: Jan 2005
Location: Indianapolis, IN (KUMP)
Posts: 1,019
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That's exactly how mine look.
T.
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Thomas Short
KUMP - Indianapolis, IN / KAEJ - Buena Vista, CO
RV-10 N410TS bought / flying
RV-8 wings / fuse in progress ... still
1948 Cessna 170 N3949V
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08-23-2006, 09:39 AM
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Join Date: Jan 2005
Location: Derby Kansas
Posts: 146
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Statements are easily made
Quote:
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Originally Posted by cjensen
Normal. Proseal is easily painted and won't be the cause of any paint defects.
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That sounds good, tell it to all the people that have blisters on tank rivets only.
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Doyle Reed, Casper 2
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08-23-2006, 10:14 AM
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Join Date: Jun 2005
Location: Milwaukee, WI area
Posts: 2,967
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From what I've read, it's a handful of people this has happened to out of the thousands flying...sealant isn't the problem.
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Chad Jensen
Astronics AES, Vertical Power
RV-7, 5 yr build, flew it 68 hours, sold it, miss it.
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08-23-2006, 10:41 AM
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Join Date: Jan 2005
Location: albuquerque, nm
Posts: 1,167
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Good news!
Thanks,
G
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08-23-2006, 12:19 PM
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Join Date: Jan 2005
Location: SoCal
Posts: 2,061
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Quote:
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Originally Posted by cjensen
From what I've read, it's a handful of people this has happened to out of the thousands flying...sealant isn't the problem.
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So far it's a "handful" of reported problems. As to the cause, nobody seems to know, but most evidence I've seen does point in some way to the sealant.
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Steve Zicree
Fullerton, Ca. w/beautiful 2.5 year old son 
RV-4 99% built  and sold 
Rag and tube project well under way
paid =VAF= dues through June 2013
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08-23-2006, 01:38 PM
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Join Date: Jun 2005
Location: Milwaukee, WI area
Posts: 2,967
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Read what Rick said about military and airline aircraft manufacturers using sealant for fuel tanks and pressure vessels in the other thread about this (for bolts, rivets, screws, etc.). If sealant was the problem, it would be more widespread and common than it is. I'm not trying to argue by any means here...we paint over sealant all the time when repairing leaky fuel panels and I've never seen a problem. I just can't see cured sealant being THE root cause of paint bubbles. It has to be in the paint prep process...
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Chad Jensen
Astronics AES, Vertical Power
RV-7, 5 yr build, flew it 68 hours, sold it, miss it.
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08-23-2006, 02:00 PM
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Join Date: Jan 2005
Location: Derby Kansas
Posts: 146
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Blisters
Quote:
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Originally Posted by cjensen
From what I've read, it's a handful of people this has happened to out of the thousands flying...sealant isn't the problem.
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I'm not saying sealant is the cause, only that the tank sealer is the only common in this mystery.
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Doyle Reed, Casper 2
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