[Towertalk] 620/340

[Guy Olinger, K2AV]

Appearances can be deceiving (both ways). Look how strong a spider web
is and how tiny and thin.

Also do not confuse the stuff that F12 sends with the antennas with
the cheeep jjjunkkk you get in the hardware store. You CANNOT use the
typical hardware store stuff on F12 antennas. Check the archives for
threads on rivets for the total scoop, including a very detailed
explanation by N6BT.

There are rivets, and then there are rivets.


----- Original Message -----
From: "Phil Duff" <na4m@arrl.net>
To: <towertalk@contesting.com>
Sent: Sunday, April 14, 2002 8:56 AM
Subject: Re: [Towertalk] 620/340


> At 23:49 4/13/2002 -0400, K7LXC@aol.com wrote:
>
> >     As far as the potential mechanical problems, double or
triple-row the
> >rivets per joint and they won't come apart. Make sure the element
> >boom-to-element brackets are backed up with thru-bolts. And pay the
extra 10%
> >for the upgraded 100 MPH version.
>
> Instead of double/triple-rowing the joint rivets why not use a
couple of
> small stainless screws/bolts with appropriate lock washers and nuts
or
> nylock nuts?     As matter of fact if there is a need to
double/triple-row
> the rivets to prevent potential mechanical problems maybe rivets are
not
> the best way to secure the joints - just use screws/bolts?   I know
there
> are  many cases where pop-rivets are working just fine but to me
they've
> always seemed kind of a dubious method to make secure reliable
long-lived
> mechanical joints.
>
> 73 Phil NA4M
>
> -. .- ....- --   -. .- ....- --   -. .- ....- --   -. .-
..- --   -. .-
> ....- --
> Phil Duff NA4M     na4m@arrl.net   Georgetown, Texas
>
>
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