[TowerTalk] US Tower HDX-689 Sheave replacement

[Al Kozakiewicz]

I don't know about your freezer, but mine has never exceeded room temperature!

________________________________
From: George Dubovsky [n4ua.va at gmail.com]
Sent: Monday, March 11, 2013 5:55 PM
To: mikflathead at aol.com
Cc: Al Kozakiewicz; larryj at teleport.com; towertalk at contesting.com
Subject: Re: [TowerTalk] US Tower HDX-689 Sheave replacement

If you heat a bearing to the flash point of the grease, you've probably already destroyed the bearing.

73,

geo - n4ua

On Mon, Mar 11, 2013 at 5:49 PM, <mikflathead at aol.com<mailto:mikflathead at aol.com>> wrote:

 Be careful doing that. Sometimes the grease in the bearing will catch fire.





-----Original Message-----
From: Al Kozakiewicz <akozak at hourglass.com<mailto:akozak at hourglass.com>>
To: larryjspammenot at teleport.com<mailto:larryjspammenot at teleport.com> <larryj at teleport.com<mailto:larryj at teleport.com>>; towertalk <towertalk at contesting.com<mailto:towertalk at contesting.com>>
Sent: Mon, Mar 11, 2013 10:24 am
Subject: Re: [TowerTalk] US Tower HDX-689 Sheave replacement


NO!

At worst, a local machine shop can press a new bearing into a sheave.  Depending
on the diameter of the sheave, your own resourcefulness and tool collection, you
can often do it yourself with a large bench vise and some sockets.

In fact, with an aluminum sheave, I'd bet that you could heat the sheave up in a
oven; put the bearing in a freezer; and the two components would slide together
without a press!

Al
AB2ZY

________________________________________
From: TowerTalk [towertalk-bounces at contesting.com<mailto:towertalk-bounces at contesting.com>] On Behalf Of
larryjspammenot at teleport.com<mailto:larryjspammenot at teleport.com> [larryj at teleport.com<mailto:larryj at teleport.com>]
Sent: Monday, March 11, 2013 10:16 AM
To: towertalk at contesting.com<mailto:towertalk at contesting.com>
Subject: Re: [TowerTalk] US Tower HDX-689 Sheave replacement

Does that mean that the tower has to go back to UST to have such things
installed? Just curious, before I look at spending lots of $$$$ for a tower that
might need to have the same thing done a few years down the road. That could be
VERY expensive!

LJ



-----Original Message-----
>From: K7LXC at aol.com<mailto:K7LXC at aol.com>
>Sent: Mar 11, 2013 6:53 AM
>To: towertalk at contesting.com<mailto:towertalk at contesting.com>, rich at n7tr.com<mailto:rich at n7tr.com>
>Subject: Re: [TowerTalk] US Tower HDX-689 Sheave replacement
>
>>  Im looking for the 5 inch OD Pulley Sheave for the  HDX-689. This is for
>the ? in cable.   I need to order a few of these  as I'm replacing all the
>cables on the tower right now.  I know US Towers  had them, but wanted to
>see if anyone else has replaced them from another vendor  for a better price.
>
>    Typically these are UST proprietary. That is, they  make an aluminum
>sheave and then press a sealed bearing into it. You'd have to  do the same
>thing.
>
>Cheers,
>Steve     K7LXC
>TOWER TECH
>US Tower factory authorized installer
>_______________________________________________
>
>
>
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>TowerTalk at contesting.com<mailto:TowerTalk at contesting.com>
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