On 11/12/2011 6:50 PM, Mike wrote:
> Jim -
>
> Any chance the rotor or the mast mount have gotten off center? If it were an
> aluminum
> mast, maybe galling? Just a dot in the shark....
One possibility would be to screw zerks into the two bolt holes in that
top extension and pump it full of grease. Use grease that won't set up
in cold weather if your area is subject to such.
73
Roger (K8RI)
>
> 73, Mike NF4L
>
>
> On 11/12/2011 3:40 PM, Jim Brown wrote:
>> Crew,
>>
>> My Rohn 25 tower holds a 3-el SteppIR up about 125 ft in redwoods, about
>> 50 ft below the tops of the surrounding trees. For at least 6 months,
>> the mast has been binding when it's been raining much. I've carefully
>> studied things from the ground below, and there's nothing hitting the
>> antenna, so I believe it must be binding in the pointy-top. K6XX and I
>> have banged ideas around, and all we can come up with s debris from the
>> trees above collecting in the space between the mast and the sleeve, and
>> expanding as it gets wet.
>>
>> As a solution, we're thinking about hitting that gap from above with a
>> couple of cans of WD40, and perhaps adding some sort of rubber gasket on
>> the mast just above that point to prevent additional debris collecting
>> there.
>>
>> Does this make sense? Any experience from others on symptoms like
>> this? Any other suggested solutions?
>>
>> 73, Jim K9YC
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