[TowerTalk] Yagis and Rivets

[Michael Tope]

Dave,

Have you been able to indentify where the deformation took
place? Are the rivets elongated, have the holes in the 
tubing been reamed out by the rivet, or have the rivet heads
deformed? Has the tubing flattened out at all?

Mike, W4EF................

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From: 	Dave D'Epagnier[SMTP:DDEpagnier@compuserve.com]
Sent: 	Wednesday, March 15, 2000 2:56 PM
To: 	towertalk
Subject: 	[TowerTalk] Yagis and Rivets


Hello,
I'm just about to finally put back up my C3-S. It's been up for about a
year and a half and worked well all that time - no problems. I thought I'd
maybe redo the joints with some silicone vacuum grease and kind of spruce
it up a bit before it was put back into commision. One thing noticed on my
half disassembled antenna though is that ALL OF THE RIVETS ARE LOOSE!
Sorry, don't mean to shout  but  this is surprising. It looks to like every
one of those once very sturdy rivets are loose. I can wiggle every element
section with respect to its mate and have to wonder how good the rf
connection is between them. And I thought rivets were the best and would
never be a problem.They were installed correctly. I'm wondering if aluminum
rivets are simply wimpy. Maybe steel rivets would hold much stronger and
longer, and even though they may cause local corrosion, the overall
connection might last longer with steel. Has anyone else experienced this?
How did you deal with it?

--Dave
K0QE

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