[TowerTalk] To guy or not to guy a Wilson WT61 - that is thequestion

[Bill Aycock]

Steve- Please  check the part I  have marked with *** below. I think it is 
wrong. Correct me if it's  me.
BILL-w4BSG
----- Original Message ----- 
From: <K7LXC at aol.com>
To: <towertalk at contesting.com>; <w7key at mac.com>
Sent: Tuesday, July 14, 2009 5:41 PM
Subject: Re: [TowerTalk] To guy or not to guy a Wilson WT61 - that is 
thequestion


>
> In a message dated 7/14/2009 12:02:04 P.M. Pacific Daylight Time,
> towertalk-request at contesting.com writes:
>
>>  The now defunct Wilson WT61 foot tower comes with a brochure  saying it
> can be strengthened to 20sqft wind load in a 50 mph wind  by guying.
> They show a single bearing being placed on the 3rd, top  section with 4
> guy cables.  In discussions with hams who had  guide crank up towers
> collapse, there seems to be a difference of  opinion over whether crank
> up towers can or should be guyed.   The argument is that when the wind
> blows, the guys transfer the  pressure down the tower.  If the crank up
> cable is supporting  the tower, this can place stress on the tower and
> down she  comes!  The Wilson has a single pin on a spring (mine gone)
> where a small role may be pulled to place a non-slip pin into the  top
> of the first of three sections.  A friend said this might  take stress
> off the cable that cranks and holds the tower,  permitting guying.   I
> am interested in experience and  opinions.
>
>     Around here I recommend following the LXC  Prime Directive to "DO what
> the manufacturer says." Pretty simple.
>
>    This is assuming that the existing cables and  tower are in decent
> shape of course. My caution would be to just barely  tension the guys. You 
> don't
> want to add to the compressive force on the  existing haul cables. You'd 
> be
> using the guys more like a tether, just  something to contain the movement
> of the tower in the wind. This is a  free-standing tower so the lower,
> unguyed rating allows a small load  without guying it.
>
***
\***
>    Don't forget that the guys also take some of the  downward force - it's
> not all going on the tower haul cables.
>
***
***
>    And yes, crank-up towers can collapse. Just go  easy on everything,
> over-engineer it somewhat if you can and you should  be fine.
>
> Cheers & GL,
> Steve     K7LXC
> TOWER TECH
>
>
>
>
> **************Can love help you live longer? Find out now.
> (http://personals.aol.com/articles/2009/02/18/longer-lives-through-relationships/?ncid=emlweu
> slove00000001)
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk at contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>
>