| Author |
Message |
    
Davec
Junior Member
Username: Davec
Post Number: 22
Registered: 6-2003
| | Posted on Monday, December 20, 2004 - 6:00 pm: | 
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I'm ready to put up a 48'tower for a Maco103. The rotator mount is about 3' from the top of the tower.The ant. mast is I think 1" thats going to go thru a 2" hole where a thrust bearing(which I don't have) can be mounted. Is it advisible to install one? The rotor is a Yaseu. |
Road_warrior
Intermediate Member
Username: Road_warrior
Post Number: 223
Registered: 7-2004
| | Posted on Monday, December 20, 2004 - 11:11 pm: |
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Yeah, i would use a Trust Bearing to keep
the weight off of your rotor./ Rotor will
last alot longer./
JIM/CENTRAL PA/CEF 375 |
Racer X (Unregistered Guest)
Unregistered guest
| | Posted on Tuesday, December 21, 2004 - 7:33 am: |
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Just a suggestion - If you're going to the trouble of putting up a 48' tower and using a thrust bearing, why not mount the rotor near the ground? If something should happen to it you can service it easily and still rotate the antenna with the armstrong method. |
Pig040
Advanced Member
Username: Pig040
Post Number: 597
Registered: 7-2003
| | Posted on Tuesday, December 21, 2004 - 3:22 pm: |
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With that light of an antenna, a thrust bearing would be optional, I would use one, so that you could accomodate any antenna you would happen to use in the future.
Rich |
Davec
Junior Member
Username: Davec
Post Number: 23
Registered: 6-2003
| | Posted on Tuesday, December 21, 2004 - 4:23 pm: |
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Racer, I've thought of that and seen quite a few mounted that way in my travels,but the top section of this tower has the original mounting plate fixed about 3' from the top. Also the tower will be installed so it can be easily layed down. |
Tech291
Moderator
Username: Tech291
Post Number: 17
Registered: 11-2004
| | Posted on Tuesday, December 21, 2004 - 7:34 pm: |
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Davec,
You say a 1' mast through a 2' hole,I would at least use some sort of bushing to reduce lateral load on the rotator during windy conditions.
tech291
CEF#291
kc8zpj |
The ELCO guy (Unregistered Guest)
Unregistered guest
| | Posted on Wednesday, December 22, 2004 - 7:47 am: |
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Re Racer...
a 40 ft plus lenght of pipe inside the tower would probably require some kind of inner-tower alignment half way down inside the tower for that much pipe--twisting and such.
Think directional drilling in the oil field. That solid steel pipe is bent to drill in a direction other than strate down. It does so because as the pipe gets longer it can be bent like a noodle.
So while it probably would be a pain to make repairs with the rotor in the air at the top, the shorter pipe attaching the antennas would be far less prone to bending amd twisting.
Something to consider.
Signed
That wackey ol
ELCO GUY |
The ELCO guy (Unregistered Guest)
Unregistered guest
| | Posted on Wednesday, December 22, 2004 - 7:51 am: |
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@ Dave
I know that it has been said many times before but it bears repeating.
If you are going to use a Ham rotator with a locking tab in the rotor remember to FIRST press the break release before pressing the direction button. This will also lengthen the life of your equipment.
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