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Fw: [TowerTalk] Crankup Failure

To: <towertalk@contesting.com>
Subject: Fw: [TowerTalk] Crankup Failure
From: d.dimitry@mci2000.com (d.dimitry)
Date: Sat, 14 Nov 1998 12:55:04 -0600
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    You wrote:
   =20
    =20
    I have used a crank up for 30 years now and have been involved with =
several other installs.  The main reasons for crank ups to fail are:
    =20
    1.  wire rope starts to get snags and lose strength.  See a snag =
replace the rope.
    =20
   =20
    Overkill in winch, clamps, and rope size are just more insurance.
    =20
    Dave K4JRB
    =20
   =20
    My reply:
   =20
    This is simply not true.  In fact, it would be foolish, expensive =
and even dangerous to follow this advice.  It is especially important =
that the size of your wire rope and related components be not too small, =
not too large, but just right.  Oversizing is only going to cause more =
problems.  The dynamics of cable wear and longevity is involved here.  =
Each size cable has specific characteristics under certain conditions =
and parameters.  Change those parameters, and you need to change the =
cable, and vice versa.  That's all I'm explaining for now.    I'll leave =
it up to a very sharp subscriber to pick the clues and take this thread =
up to more definate detail.  "Preciseness is a niceness." (How's that =
for a catchy phrase.)=20
   =20
    DrakeDimitry@HeightsTowers.com
   =20
   =20
   =20
    =20
     =20

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http-equiv=3DContent-Type><!DOCTYPE HTML PUBLIC "-//W3C//DTD W3 =
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<BLOCKQUOTE=20
style=3D"BORDER-LEFT: #000000 solid 2px; MARGIN-LEFT: 5px; PADDING-LEFT: =
5px">
    <DIV><FONT face=3DArial size=3D2><FONT size=3D3>You =
wrote:</FONT></FONT></DIV>
    <DIV><FONT face=3DArial size=3D2><FONT =
size=3D3></FONT><BR>&nbsp;</DIV></FONT>
    <DIV><FONT color=3D#000000 face=3D"Courier New">I have used a crank =
up for 30=20
    years now and have been involved with several other installs.&nbsp; =
The main=20
    reasons for crank ups to fail are:</FONT></DIV>
    <DIV><FONT color=3D#000000 face=3D"Courier New"></FONT>&nbsp;</DIV>
    <DIV><FONT color=3D#000000 face=3D"Courier New">1.&nbsp; wire rope =
starts to get=20
    snags and lose strength.&nbsp; See a snag replace the =
rope.</FONT></DIV>
    <DIV><FONT color=3D#000000 face=3D"Courier New"></FONT>&nbsp;</DIV>
    <DIV>&nbsp;</DIV>
    <DIV><FONT face=3D"Courier New">Overkill in winch, clamps, and rope =
size are=20
    just more insurance.</FONT></DIV>
    <DIV><FONT face=3D"Courier New"></FONT>&nbsp;</DIV>
    <DIV><FONT face=3D"Courier New">Dave K4JRB</FONT></DIV>
    <DIV><FONT face=3D"Courier New"></FONT>&nbsp;</DIV>
    <DIV>&nbsp;</DIV>
    <DIV>My reply:</DIV>
    <DIV>&nbsp;</DIV>
    <DIV>This is simply not true.&nbsp; In fact, it would be foolish, =
expensive=20
    and even dangerous to follow this advice.&nbsp; It is especially =
important=20
    that the size of your wire rope and related components be not too =
small, not=20
    too large, but just right.&nbsp; Oversizing is only going to cause =
more=20
    problems.&nbsp; The dynamics of cable wear and longevity is involved =

    here.&nbsp; Each size cable has specific characteristics under =
certain=20
    conditions and parameters.&nbsp; Change those parameters, and you =
need to=20
    change the cable, and vice versa.&nbsp; That's all I'm explaining =
for=20
    now.&nbsp;&nbsp;&nbsp; I'll leave it up to a very sharp subscriber =
to pick=20
    the clues and take this thread up to more definate detail.&nbsp;=20
    &quot;Preciseness is a niceness.&quot; (How's that for a catchy =
phrase.)=20
    </DIV>
    <DIV>&nbsp;</DIV>
    <DIV><A=20
    =
href=3D"mailto:DrakeDimitry@HeightsTowers.com";>DrakeDimitry@HeightsTowers=
.com</A></DIV>
    <DIV>&nbsp;</DIV>
    <DIV>&nbsp;</DIV>
    <DIV>&nbsp;</DIV>
    <DIV><FONT color=3D#000000 face=3D"Courier New"></FONT>&nbsp;</DIV>
    <DIV><FONT color=3D#000000 face=3D"Courier New">&nbsp;=20
</FONT></DIV></BLOCKQUOTE></BODY></HTML>

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