Good thought, but the sections extend simultaneously and the rotor is circa 12
feet above the next section when the jam occurred. Not enough of the rotor
cable is free to cause a jam, and again it would be well above the jam point.
No other work done.
The raising cable feels like rod, not cable. It seems really really taut to me,
but I don't have a reference to judge it by.
The thrust bearing was untouched.
73, Mike NF4L
> On Aug 17, 2015, at 12:42 AM, Roger (K8RI) on TT <K8RI-on-TowerTalk@tm.net>
> wrote:
>
>
>
> To expand on Bill's answer which is the most likely: Was any other work done
> besides the rotator? I take it this is the original rotator, or the
> replacement is the same make and model with no physical changes ? If so,
> I'd be extra cautious about cables. Typically, If the rotator cable ended up
> too short the extension of the tower would pull it apart, unless the motor
> power is just enough to do its job under normal conditions.
>
> Often, a cable will get pushed out-of-the-way while working on something and
> overlooked when going back together, or tension can be released, allowing the
> cable or cables to drop to the side allowing them to slide over parts,
> effectively requiring a longer cable for full extension.
>
> There aren't that many things that can limit full extension if no work was
> done on the raising and lowering cables. Anything causing the raising, or
> lowering cable(s) to be out-of-line would prevent full extension.
>
> When you reach the point of maximum extension, do any cables, (raising,
> lowering, or electrical including limit switches) appear to be too tight, or
> too loose? Once retracted and tilted over, check all cables, (raising,
> lowering, rotator, and limit switch cables for chafing, breaks, or kinks.
> Broken or chafed/scraped strands in the raising, or lowering cables.
>
> I'd be particularly suspicious of the rotator cable. Did it get wrapped
> around a cross brace to keep it out-of-the-way while working on the rotator,
> removing, or reinstalling ? (that's the kind of thing I'd do<:-)
>
> You were going to unpin the one thrust bearing. Did anything change around
> that operation?
>
> That's all I can think of at present, or at least until I hit [send]
>
> 73 es good luck!
>
> Roger (K8RI)
>
>
> On 8/16/2015 8:39 PM, Bill Aycock wrote:
>> Mike-- Since this happened just after Rotor work, I would suspect > that as
>> the cause. Where is the Rotor with respect to the top? I >
> would take a close look at the Rotor body for any scratches, etc. >
> Bill--W4BSG > > -----Original Message----- From: Mike Reublin NF4L Sent:
> Sunday, > August 16, 2015 5:44 PM To: towertalk reflector Subject: Re: >
> [TowerTalk] Binding tower > > Anybody know a traveling tower mechanic? 73,
> Mike NF4L > > >> On Aug 15, 2015, at 6:13 AM, Mike Reublin NF4L
> <nf4l@comcast.net> >> wrote: >> >> I had the HG-70HD down to replace the
> rotor. When I put it back up, >> it binds about 3 feet from full extension
> enough to stall the 24V >> wheelchair motor that drives a Fulton #3000 winch.
> >> >> I can't see any hang up thru binocs. When I collapse it, and tilt >>
> it over, how do I find the jam, and how can I repair it? I don't >> have
> enough room to extend it fully when it's horizontal. >> >> 73, Mike NF4L >>
> >> >> _______________________________________________ >> >> >> >>
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