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wreining(at)gmail.com
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 Posted: Sun Feb 25, 2007 3:19 pm Post subject: Is It OK to Flatten a Dimple? |
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Oops – I mistakenly dimpled a hole in one of the flanges on a tail cone frame (where the longeron attaches). It flattened right out when I squeezed it with a rivet set. Is this OK? I wouldn’t think a whole row would be a good idea, but just one?
Bill (and Jon) Reining
40514
[quote][b]
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indigoonlatigo(at)msn.com
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| Posted: Sun Feb 25, 2007 9:35 pm Post subject: Is It OK to Flatten a Dimple? |
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Looks like no one is answering your question. In general, as you already
know this is a bad idea. But as you said one probably won't be an issue. You
may want to wet rivet it with a small dab of proseal or other bonding
material to help prevent any cracks that might have or will be forming when
the rivet expands.
JOhn G. 409
Do NOt Archive
| Quote: | From: "Bill Reining" <wreining(at)gmail.com>
Reply-To: rv10-list(at)matronics.com
To: <rv10-list(at)matronics.com>
Subject: Is It OK to Flatten a Dimple?
Date: Sun, 25 Feb 2007 15:18:10 -0800
Oops - I mistakenly dimpled a hole in one of the flanges on a tail cone
frame (where the longeron attaches). It flattened right out when I
squeezed
it with a rivet set. Is this OK? I wouldn't think a whole row would be a
good idea, but just one?
Bill (and Jon) Reining
40514
|
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jesse(at)saintaviation.co
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| Posted: Mon Feb 26, 2007 12:48 pm Post subject: Is It OK to Flatten a Dimple? |
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As John already mentioned, it is probably OK on one, but you don’t want to do it much. In general, if you dimple something that doesn’t need a dimple, you are better off using a flush rivet if you can than flattening it out and using a round head. I think Van’s would say it is OK to rivet it flattened out if it is just one hole. To see how it weakens the part, take a scrap piece, drill a hole, then dimple it, flatten it, dimple, etc. until it breaks out. It doesn’t take long. If you dimple it the wrong way and then dimple it back the right way, it can break even after the second dimple, so it is definitely a LOT weaker.
Do not archive.
Jesse Saint
Saint Aviation, Inc.
jesse(at)saintaviation.com (jesse(at)saintaviation.com)
www.saintaviation.com
Cell: 352-427-0285
Fax: 815-377-3694
From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of Bill Reining
Sent: Sunday, February 25, 2007 6:18 PM
To: rv10-list(at)matronics.com
Subject: Is It OK to Flatten a Dimple?
Oops – I mistakenly dimpled a hole in one of the flanges on a tail cone frame (where the longeron attaches). It flattened right out when I squeezed it with a rivet set. Is this OK? I wouldn’t think a whole row would be a good idea, but just one?
Bill (and Jon) Reining
40514 [quote] [b]
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