[TowerTalk] US Tower HDX-689 Sheave replacement

Mon Mar 11 22:48:15 EDT 2013

I'd be interested to know how old your HDX-589 and HDX-689 towers are, since you're both looking at doing much more than just replacing cables. Again, just looking at future expenditures in case I get a similar one for myself.

LJ

-----Original Message-----
>From: Bob K6UJ <k6uj at pacbell.net>
>Sent: Mar 11, 2013 6:20 PM
>To: towertalk reflector <towertalk at contesting.com>
>Subject: Re: [TowerTalk] US Tower HDX-689 Sheave replacement
>
>That is discouraging to hear. I am hoping to order some spare bearings for my HDX589.  
>I suppose contacting US Tower wouldn't do any good, they probably wont let us know the supplier for the sheave bearings.............
>On the other hand I think I will all them tomorrow and see.  
>
>
>Bob
>K6UJ
>
>
>
>
>On Mar 11, 2013, at 4:06 PM, Dan Hearn wrote:
>
>> I have replaced the bearings on myTX472. Two bearing places in Spokane said
>> that there is no replacement available with the correct ID and OD.. They
>> could supply a bearing with the correct OD but the ID would be too large.
>> They did have a bronze sleeve bearing with exactly the correct OD and ID to
>> fill the space between the thru bolt and the available bearing. It was
>> relatively easy to change the bearings and stake the edge of the sheave.
>> 
>> Dan, N5AR
>> 
>> 
>> On Mon, Mar 11, 2013 at 2:59 PM, <gdaught6 at stanford.edu> wrote:
>> 
>>>> If you heat a bearing to the flash point of the grease, you've
>>>> probably
>>>> already destroyed the bearing.
>>> 
>>> There's no way I can turn the handle on my crank-up fast enough to even
>>> warm the
>>> grease!
>>> 
>>> 73,
>>> 
>>> George T Daughters, K6GT
>>> CU in the California QSO Party (CQP)
>>> October 5-6, 2013
>>> 
>>> 
>>> _______________________________________________
>>> 
>>> 
>>> 
>>> _______________________________________________
>>> TowerTalk mailing list
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>>> 
>> 
>> 
>> 
>> -- 
>> Dan Hearn
>> N5AR
>> _______________________________________________
>> 
>> 
>> 
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>
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