Everything stretches and wears. If you have enough adjustment range, take
out a full link and put in a half link. Farm supply stores have all this
stuff.
Keeping a chain tight enough SHOULD involve idler sprockets on EACH side of
the chain (if a worm drive is used). The idler sprockets are mounted
flexibly so that they can be tensioned and will float and absorb the shocks
from the wind and start/stop cycles. Without this, stretch will be
accelerated and you will constantly be readjusting things.
Don
VE6JY
On Dec 4, 2007 4:30 PM, Perry - K4PWO <k4pwo@comcast.net> wrote:
> 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
> >>
> >> _______________________________________________
> >>
> >>
> >>
> >> _______________________________________________
> >> TowerTalk mailing list
> >> TowerTalk@contesting.com
> >> http://lists.contesting.com/mailman/listinfo/towertalk
> >>
> >
> >
> >
> ------------------------------------------------------------------------------------------------
> > This message is for the designated recipient only and may
> > contain privileged, proprietary, or otherwise private information.
> > If you have received it in error, please notify the sender
> > immediately and delete the original. Any unauthorized use of
> > this email is prohibited.
> >
> ------------------------------------------------------------------------------------------------
> > [mf2]
> >
> > _______________________________________________
> >
> >
> >
> > _______________________________________________
> > TowerTalk mailing list
> > TowerTalk@contesting.com
> > http://lists.contesting.com/mailman/listinfo/towertalk
>
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>
>
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|