One of the biggest reasons a chain and sprocket will wear out is over
tensioning. Examine the sprocket closely and if you see even the slightest
"hooking" of the teeth, you should replace it as well. When you re-tension
the chain, check for some deflection in the long spans. If there is none,
you have it too tight.
73 de Perry - K4PWO
----- Original Message -----
From: "Dubovsky, George" <George.Dubovsky@andrew.com>
To: "Garland, James C. Dr." <garlanjc@muohio.edu>;
<TowerTalk@contesting.com>
Sent: Tuesday, December 04, 2007 9:08 AM
Subject: Re: [TowerTalk] Question re Sky Needle rotor cage
> Yes, they stretch and they wear. Both of them are bad, because they
> change the "pitch" of the chain slightly (the roller-to-roller spacing),
> and that can accelerate wear on the sprockets. The chain is relatively
> cheap to replace - Grainger, McMaster Carr, any local bearing and drive
> distributor. Take it to the counter, and they will tell you what you
> need.
>
> 73,
>
> geo - n4ua
>
>> -----Original Message-----
>> From: towertalk-bounces@contesting.com [mailto:towertalk-
>> bounces@contesting.com] On Behalf Of Garland, James C. Dr.
>> Sent: Tuesday, December 04, 2007 9:29 AM
>> To: TowerTalk@contesting.com
>> Subject: [TowerTalk] Question re Sky Needle rotor cage
>>
>> On my Sky Needle tower, the chain drive that couples the rotor to the
> mast
>> is getting loose. Has anyone else had this problem? I'm at the end of
> the
>> adjustment range on the rotor cage, so I''m unsure how to tighten the
>> chain. Do bicycle-type chains stretch?
>>
>> Tnx,
>>
>> Jim W8ZR
>>
>> _______________________________________________
>>
>>
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>>
>
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