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1. [TowerTalk] Thrust bearing for AB-577?? (score: 1): Author: Pete Smith N4ZR <pete.n4zr@gmail.com>; Date: Tue, 18 Jul 2023 09:41:47 -0400; I have a C-3E tribander on an AB-577 "rocket launcher." I also have a 3-element 6-meter yagi that I was planning to mount 6 feet above the Yaesu rotator at the top of the 577, but was deterred by co; /archives//html/Towertalk/2023-07/msg00010.html (7,301 bytes)
2. Re: [TowerTalk] Thrust bearing for AB-577?? (score: 1): Author: "Joe Subich, W4TV" <lists@subich.com>; Date: Tue, 18 Jul 2023 11:05:40 -0400; Yaesu show a mast bearing - mount to the mast above the rotator and guy - but with your relatively small load I don't see a need for it. Look at the loads K7NV had on his AB-577(s) with no bearing ab; /archives//html/Towertalk/2023-07/msg00011.html (8,764 bytes)
3. Re: [TowerTalk] Thrust bearing for AB-577?? (score: 1): Author: Pete Smith N4ZR <pete.n4zr@gmail.com>; Date: Tue, 18 Jul 2023 11:37:18 -0400; That's true, Joe - the thing that concerned people was the 6-foot lever arm above the tri-bander, even though the antenna mounted at the top of it is quite small. 73, Pete N4ZR Yaesu show a mast bear; /archives//html/Towertalk/2023-07/msg00012.html (8,807 bytes)
4. Re: [TowerTalk] Thrust bearing for AB-577?? (score: 1): Author: <john@kk9a.com>; Date: Tue, 18 Jul 2023 22:27:13 -0400; It should be easy to add a rotator cage to the top of the AB-577 MAST so you could use a thrust bearing. Below is one example: https://www.prosistelshop.com/en/standard-rotator-cage-49.html John KK9A; /archives//html/Towertalk/2023-07/msg00014.html (8,042 bytes)

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