[TowerTalk] Fwd: FW: Installing a Ham-IV rotor on Tashjian w-51 tower

[Don W7WLL]

My WT-51 also has the welded tabs to support the rotor plate.

Don W7WLL



-----Original Message----- 
From: KJ6Y--- via TowerTalk
Sent: Sunday, September 17, 2017 2:45 PM
To: towertalk at contesting.com
Subject: [TowerTalk] Fwd: FW: Installing a Ham-IV rotor on Tashjian w-51 
tower



I just had a chance to look at he W-51 I have for sale.  35 inches  down
from the top are tabs welded inside each leg to support the rotator  plate.
I'm not sure it Tashjian stills does it this way but every Tri-Ex  W-51 I've
ever installed or worked on (and there were many), all had the  tabs.


Skip,  KJ6Y
Communications Service Co
818-522-5421 cell
_www.kj6y.com_ (http://www.kj6y.com/)




In a message dated 9/17/2017 12:50:49 P.M. Pacific Daylight Time,
maflukey at gmail.com writes:

Hi  Bob,

I have a W51 vintage 1967.   On this tower there are  no rotor plate tabs on
the legs.   The rotor plate is drilled  in each corner and uses (3) wedge
lock arrangements.  Each wedge  lock was fabricated by welding a piece of
threaded rod to a short section  of structural angle.  The threaded rod is
mounted through the hole  in the rotor plates while the angle straddles the
inside of the tower  leg.  When a nut is drawn up on the threaded rod, it
wedges the  angle tight against the inside of the tower leg.

Hope this info  helps.

P.S.  I would avoid drilling though the legs - it will  create stress
concentrations and weaken the  structure.

73
Matt
KM5VI

-----Original  Message-----
From: TowerTalk [mailto:towertalk-bounces at contesting.com] On  Behalf Of Bob
Richards
Sent: Saturday, September 16, 2017 2:42  PM
To: KJ6Y at aol.com; towertalk at contesting.com
Subject: Re: [TowerTalk]  Installing a Ham-IV rotor on Tashjian w-51 tower

I went all over the  inside of the top tower section and found no tabs. My
idea is to drill,  tap, and put in short bolts where the tabs should be,
sitting the rotator  plate on the bolt heads.  I do plan to contact Tashjian
on Monday  before doing this.  Nice to know an experienced W-51 installer
had
to bend the bracing to install the rotator.  Perhaps I missed it  but I've
seen nothing in any of the tower documentation that describes  rotator
installation.

I do expect to be pleased with my tower once  I get the rotator installed.
Many thanks to everyone for all the  feedback to my questions.

Bob NZ6G


On 9/15/2017 8:16 PM,  KJ6Y at aol.com wrote:
> On the W-51, the rotator plate sits about 3  ft down from the top on
> tabs welded inside the tower. You have to  bend the diagonal bracing
> slightly to get the rotator in and  then bend them back. There should
> be no reason to mount the rotator  down 7 ft.
> I've done many W-51 installations and service and it's a  fine tower.
> Skip, KJ6Y
> Communications Service Co
>  818-522-5421 cell
> www.kj6y.com  <http://www.kj6y.com/>

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Skip,  KJ6Y
Communications Service Co
818-522-5421 cell
_www.kj6y.com_ (http://www.kj6y.com/)



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