Hi Pat and all,
I read about the book by W6NL and it seems interesting. It's out of print
so if anybody can part with a copy I'm interested. Please reply direct to
me. Thanks.
73 Bert, VE3OBU
-----Original Message-----
From: towertalk-bounces@contesting.com
[mailto:towertalk-bounces@contesting.com] On Behalf Of Pat Barthelow
Sent: Sunday, October 26, 2008 9:23 AM
To: towertalk@contesting.com
Subject: [TowerTalk] Killer Springs; Spring-Eq plate/Leeson
Dave Leeson, W6NL designed a great solution to the rotor-to- Beam shock
absorber problem, using a rubber BMW steering shaft coupler....But that, as
you say, was a different cart of apples than the Killer spring-guy wire
idea.
I have Leeson's Masterpiece, "Physical Design of Yagi Antennas" (covering a
lot on towers, also) in storage, somwhwere, and miss thumbing through it
once in a while. A real gem. It should be a reference in the Bookshelf of
any Tower owner/user.
Manufacturers ought to incorporate mention of same, so that Leeson's great
idea can meet the high standards of Steve's prime directive.
All the best, Pat Barthelow AA6EG Skype: sparky599aa6eg@k6bj.org
http://www.jamesburgdish.org
> From: wa3gin@comcast.net
> To: K7LXC@aol.com; towertalk@contesting.com; draxfelton@gmail.com
> Date: Sun, 26 Oct 2008 08:24:48 -0400
> Subject: Re: [TowerTalk] Spring between equalizer plate and earth
> anchor
>
> I remember some folks using springs like this in their rotor to mast
> connection ala Back Lash....maybe somewhere down the line the story
> was mis-understood and the coils migrated to guy cables -- scary!
>
> 73,
> dave
> wa3gin
----- Original Message -----
From: <K7LXC@aol.com>
To: <towertalk@contesting.com>; <draxfelton@gmail.com>
Sent: Sunday, October 26, 2008 7:43 AM
Subject: Re: [TowerTalk] Spring between equalizer plate and earth anchor
In a message dated 10/25/2008 9:26:45 P.M. Pacific Daylight Time,
towertalk-request@contesting.com writes:
A local ham told me to get some heavy duty hood springs from a 1950-1960's
car and put them between my guy wire equalizer plates and earth anchors.
This is to "prevent backlash" during storm force winds.
Any thoughts on this?
You bet. This is a particularly stupid idea. Is there anything like this
that's even suggested by the manufacturer? No way.
By backlash, I assume he's talking about slack in the guys. If the guys
are properly tensioned, there's no need to "prevent backlash" because
there is no slack on the guys.
And besides, you've got no idea what the strength of the hood springs are.
How would you attach them?
In all things the LXC Prime Directive still trumps amateur old wives'
tales: "DO what the manufacturer says." The converse is also true "DON'T
DO what they don't tell you." And congratulations for checking on
TowerTalk before following this very poor - and potentially fatal -
advice.
Cheers,
Steve K7LXC
TOWER TECH
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