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grs-pms(at)comcast.net
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 Posted: Fri Apr 07, 2006 8:38 pm Post subject: Domed rivets-response to Christian Trembley |
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Christian:
I believe Chris H. answered this question some time ago, but I can't remember where I saw the answer. Perhaps someone else on the list remembers. I have no knowlege on this subject, except that Chris has tested the strength of Avex rivets formed this way, and recommends it.
George
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David X
Joined: 10 Jan 2006
Posts: 154
Location: Princeton, NJ, USA
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| Posted: Tue Apr 11, 2006 8:19 pm Post subject: Re: Domed rivets-response to Christian Trembley |
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The only explanation I've seen is on the Zenith site. The unique method makes for a tighter seal in the hole; which would - I imagine - also help keep moisture out and prevent corrosion. It makes some sense when you consider that it’s a bit like wedging the head of the rivet in instead of just pressing it … but it’s debatable that it would seal better than a regular pulled rivet that expands everywhere it possibly can. I did notice that Chris’ technique makes for a slightly smaller dome than the regular domed rivets.
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Zodiac 601 XL - CZAW Built - Rotax 912S
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rdewees(at)mindspring.com
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| Posted: Wed Apr 12, 2006 10:23 am Post subject: Domed rivets-response to Christian Trembley |
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Hi David-- A friend of mine just finished a Soneral II and I helped him
skin the wings. It calls for pop rivets just like the 601 but counter
sinks all rivets and uses a flat nose on the puller. The result is
almost undetectable from bucked rivets and a lot less difficult and
time-consuming. It does take a second step of counter sinking the
rivets but the result is nice. I have no idea what the effect is on top
speed, but the wing is a lot thinner so I expect it's more laminar for a
larger percent of the wing surface than our fat wings. If I were to even
think about bucking rivets I would use the countersunk method instead.
Ron
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David X wrote:
| Quote: |
The only explanation I've seen is on the Zenith site. The unique method makes for a tighter seal in the hole; which would - I imagine - also help keep moisture out and prevent corrosion. It makes some sense when you consider that its a bit like wedging the head of the rivet in instead of just pressing it but its debatable that it would seal better than a regular pulled rivet that expands everywhere it possibly can. I did notice that Chris technique makes for a slightly smaller dome than the regular domed rivets.
--------
Zodiac 601 XL - CZAW Built - Rotax 912S
DO NOT ARCHIVE
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bakpakr2(at)cox.net
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| Posted: Wed Apr 12, 2006 11:43 am Post subject: Domed rivets-response to Christian Trembley |
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Just curious if your friend was countersinking .016 aluminum?
John
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