|To:||K7LXC@aol.com, email@example.com, firstname.lastname@example.org|
|Subject:||Re: [TowerTalk] Broken Element Tip|
|From:||Pete Smith <email@example.com>|
|Date:||Wed, 12 May 2004 03:53:30 -0400|
At 01:17 AM 5/12/2004, K7LXC@aol.com wrote:
Here's what I recommend. In addition to the standard 3 rivets inline for element attachment, add a second row of 3 (or 4) rivets opposite the original ones. Or add a third row so that each row is 120 degrees around the element. You'll be good to go for years now.
The downside here is that you're dealing with an element tip of only 3/8 inch diameter, and rivets with a 1/8 inch shank. I don't know how much overlap there is in these particular tips, but it isn't difficult to envision weakening the joint more than you help its rigidity, if you put as many as 9 additional 1/8" holes in a few inches of 3/8" and 1/2" aluminum tubing.
My 3 stock F12 HF antennas have been up since 1994, 1995 and 1996 respectively with no tip problems. Perhaps my environment is a lot more benign than VE5RA's (seems likely), but I don't think I'd rush to put in more than 1 additional rivet, at right angles to the others and as far away from them as possible.
73, Pete N4ZR
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