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Total 25 documents matching your query.

1. [TowerTalk] Tower mast.. (score: 1): Author: "Merlin-7 KI4ILB" <merlin-7@sc.rr.com>; Date: Mon, 18 Sep 2006 22:57:57 +0100; I have been thinking about setting up my rhon 45 tower and have been dwelling a bit on the mast. I was thinking about having the mast go thru the tower all the way to ground level and placing the rot; /archives//html/Towertalk/2006-09/msg00661.html (7,409 bytes)
2. Re: [TowerTalk] Tower mast.. (score: 1): Author: Mike Rhodes <weightdn@adelphia.net>; Date: Mon, 18 Sep 2006 19:07:18 -0400; Maybe I"m overlooking something but, where does the rotor go once you have the mast sitting on a steel ball in the base of the tower? Mike / W8DN _______________________________________________ _____; /archives//html/Towertalk/2006-09/msg00662.html (8,115 bytes)
3. Re: [TowerTalk] Tower mast.. (score: 1): Author: "David Robbins K1TTT" <k1ttt@arrl.net>; Date: Mon, 18 Sep 2006 23:24:04 -0000; I want to know why all these questions about rotors at the base of the tower? For any decent sized tower the extra weight, assembly work, expense of the pipe and proper fittings, thrust bearings, jus; /archives//html/Towertalk/2006-09/msg00663.html (9,759 bytes)
4. Re: [TowerTalk] Tower mast.. (score: 1): Author: "Merlin-7 KI4ILB" <merlin-7@sc.rr.com>; Date: Mon, 18 Sep 2006 23:50:30 +0100; OK I'm busted... My budget is going to be very tight for a while after I move to the new qth. I kinda put my foot down with the wife so that I can get the funds for the tower but there is not much le; /archives//html/Towertalk/2006-09/msg00664.html (7,671 bytes)
5. Re: [TowerTalk] Tower mast.. (score: 1): Author: "JC Smith" <jc-smith@comcast.net>; Date: Mon, 18 Sep 2006 17:15:58 -0700; Hi Joe, If you really want to run a mast all the way to the bottom of the tower I'd go find a used thrust bearing (the kind that's designed to support both axial and radial loads) at the junkyard for; /archives//html/Towertalk/2006-09/msg00665.html (9,078 bytes)
6. Re: [TowerTalk] Tower mast.. (score: 1): Author: "AA6DX - Mark" <aa6dx@arrl.net>; Date: Mon, 18 Sep 2006 17:44:02 -0700; Joe .. that is part of the fun of Amateur Radio, `spearmintin' and like that! In the days of yore, many a ham shack had directional antennas turned by hand .. called the "ARMSTRONG METHOD" .. I have; /archives//html/Towertalk/2006-09/msg00668.html (10,058 bytes)
7. Re: [TowerTalk] Tower mast.. (score: 1): Author: "Merlin-7 KI4ILB" <merlin-7@sc.rr.com>; Date: Tue, 19 Sep 2006 01:09:33 +0100; I was thinking that a power window motor off of most any car would make a great driver for the rotor. I would just need to find or make the matching gear for the mast. I could also use small SPST mom; /archives//html/Towertalk/2006-09/msg00670.html (11,865 bytes)
8. Re: [TowerTalk] Tower mast.. (score: 1): Author: "Tom Osborne" <w7why@verizon.net>; Date: Mon, 18 Sep 2006 18:41:56 -0700; Hi Joe First rotator (rotor?) I had here was a right angle gear and mast outside the shack with a steering wheel inside to turn the antenna. Even had a directional indicator :-) 73 Tom W7WHY ________; /archives//html/Towertalk/2006-09/msg00672.html (9,284 bytes)
9. Re: [TowerTalk] Tower mast.. (score: 1): Author: <john@kk9a.com>; Date: Mon, 18 Sep 2006 22:38:41 -0400; It's a lot easier to set your rotator to true north when you're on the ground. John KK9A I want to know why all these questions about rotors at the base of the tower? For any decent sized tower the e; /archives//html/Towertalk/2006-09/msg00674.html (8,060 bytes)
10. Re: [TowerTalk] Tower mast.. (score: 1): Author: "mryan001" <mryan001@tampabay.rr.com>; Date: Mon, 18 Sep 2006 23:03:59 -0400; As long as you have the right size wench. -Mike --Original Message-- From: towertalk-bounces@contesting.com [mailto:towertalk-bounces@contesting.com]On Behalf Of john@kk9a.com Sent: Monday, September; /archives//html/Towertalk/2006-09/msg00676.html (9,353 bytes)
11. Re: [TowerTalk] Tower mast.. (score: 1): Author: Jim Lux <jimlux@earthlink.net>; Date: Mon, 18 Sep 2006 20:23:13 -0700; There's been some discussion about this in the last couple days. Makes the rotator a lot easier to reach. No need to have something wicked strong for the part inside your tower, because, unlike the p; /archives//html/Towertalk/2006-09/msg00677.html (9,443 bytes)
12. Re: [TowerTalk] Tower mast.. (score: 1): Author: Jim Lux <jimlux@earthlink.net>; Date: Mon, 18 Sep 2006 20:37:30 -0700; The time honored "Armstrong rotator".. Ropes are your friend. But really, once you rig up a shaft all the way to the bottom, improvising a rotator is actually pretty easy. Keep your eyes open for sui; /archives//html/Towertalk/2006-09/msg00678.html (10,714 bytes)
13. Re: [TowerTalk] Tower mast.. (score: 1): Author: Jim Lux <jimlux@earthlink.net>; Date: Mon, 18 Sep 2006 20:44:19 -0700; Magnets and reed switches are your friend.. no moving parts to get gunked up. You can either do an incremental encoder (2 switches, one that closes at "zero", the other that closes every 15 or 30 deg; /archives//html/Towertalk/2006-09/msg00679.html (10,477 bytes)
14. Re: [TowerTalk] Tower mast.. (score: 1): Author: Jim Lux <jimlux@earthlink.net>; Date: Mon, 18 Sep 2006 20:47:13 -0700; Old car rear axle and differential takes a pretty good thrust load. Welding to the brake drum is a bit of a challenge, but usually, you can modify a pipe flange or similar by drilling it for the lug; /archives//html/Towertalk/2006-09/msg00680.html (9,119 bytes)
15. Re: [TowerTalk] Tower mast.. (score: 1): Author: "Dan Zimmerman N3OX" <n3ox@n3ox.net>; Date: Tue, 19 Sep 2006 01:24:54 -0400; The Armstrong rotating method can be FAST. Nothing like good old muscle-brain feedback to start and stop a large inertial load quickly without breaking anything. I guess I'm thinking specifically of; /archives//html/Towertalk/2006-09/msg00681.html (8,441 bytes)
16. Re: [TowerTalk] Tower mast.. (score: 1): Author: "K8RI on TowerTalk" <K8RI-on-TowerTalk@tm.net>; Date: Tue, 19 Sep 2006 03:23:53 -0400; When you figure in the cost of the mast, couplings, labor and what ever else I forgot you can purchase a pretty nice rotator. Hunt the used market and you can pick up a very good one. If just running; /archives//html/Towertalk/2006-09/msg00682.html (11,511 bytes)
17. Re: [TowerTalk] Tower mast.. (score: 1): Author: "mryan001" <mryan001@tampabay.rr.com>; Date: Tue, 19 Sep 2006 05:58:51 -0400; If you'll excuse the pun, I ROGER that. - Mike When you figure in the cost of the mast, couplings, labor and what ever else I forgot you can purchase a pretty nice rotator. Hunt the used market and y; /archives//html/Towertalk/2006-09/msg00684.html (12,569 bytes)
18. Re: [TowerTalk] Tower mast.. (score: 1): Author: K7LXC@aol.com; Date: Tue, 19 Sep 2006 09:43:04 EDT; wrecked vehicle. They're used all the time in horse hot walkers for instance. The Finns have many rotating towers and I've got pictures of one that used an automobile steering wheel, shaft and gearbo; /archives//html/Towertalk/2006-09/msg00691.html (8,467 bytes)
19. [TowerTalk] Tower mast.. (score: 1): Author: Chuck <wcmoore@verizon.net>; Date: Tue, 19 Sep 2006 09:22:01 -0500 (CDT); Grab the kids old bicycles or any off a junk heap to cannibalize the pedal sprockets. Have the machine shop mill out the center of one sprocket to fit around the mast at window level. Weld the sprock; /archives//html/Towertalk/2006-09/msg00692.html (12,754 bytes)
20. Re: [TowerTalk] Tower mast.. (score: 1): Author: Jim Lux <jimlux@earthlink.net>; Date: Tue, 19 Sep 2006 07:28:16 -0700; Chain drives aren't so hot for bidirectional loads. You need some slack in the chain to account for mechanical movement, stretch, etc., so you wind up with backlash in the system. You can put a tensi; /archives//html/Towertalk/2006-09/msg00693.html (7,971 bytes)

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