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Total 41 documents matching your query.

1. [TowerTalk] Aluminum mast (score: 1): Author: rthorne@tcac.net (Richard Thorne); Date: Fri, 05 Mar 1999 16:16:45 -0600; How much more strength, in psi, does a 2.25" outside diameter, 1.25" diameter T6011 mast have over a 2" outside diameter, 1.5" diameter T6011 mast? I was at the local surplus store and found several; /archives//html/Towertalk/1999-03/msg00090.html (7,271 bytes)
2. [TowerTalk] aluminum mast (score: 1): Author: stjackso@nortelnetworks.com (Steve Jackson); Date: Tue, 16 Mar 1999 15:59:27 -0500; OK, I give up. I have been trying for DAYS to find a source of 2" OD, 0.375" wall 7075-T6 extruded aluminum tubing. Nobody seems to have any. I have called more than 9 places, from coast to coast. On; /archives//html/Towertalk/1999-03/msg00275.html (8,279 bytes)
3. [TowerTalk] aluminum mast (score: 1): Author: jerrylee@cwws.net (>?:"); Date: Wed, 17 Mar 1999 14:40:08 -0800; i also need an aluminum mast about 20 to 24 feet for the same reasons. up where i have my hf site i am the only one to do it and at my age cn't handle the weight of steel on the tower. please post an; /archives//html/Towertalk/1999-03/msg00281.html (9,289 bytes)
4. [TowerTalk] aluminum mast (score: 1): Author: thompson@mindspring.com (thompson@mindspring.com); Date: Wed, 17 Mar 1999 14:55:42 -0500; 7075-T6 must be special made in Arizona (according to Tull Metals). Its for use in the space program and HD industrial applications. I found this out when buying parts for the Mexican Space Program a; /archives//html/Towertalk/1999-03/msg00289.html (9,457 bytes)
5. [TowerTalk] aluminum mast (score: 1): Author: makemyday@worldnet.att.net (makemyday); Date: Thu, 18 Mar 1999 04:08:03 +0000; Most of these exotic-alloy heavy mast solutions are driven by the 2" diameter limit for which most common rotators are designed to keep the mast axis centered. I am using a 2-1/2" flanged bearing at; /archives//html/Towertalk/1999-03/msg00302.html (8,433 bytes)
6. [TowerTalk] Aluminum mast (score: 1): Author: n1rj@ime.net (Roger D. Johnson); Date: Sun, 11 Oct 1998 20:58:59 -0400; I had an aluminum mast up for several years in a Rohn 25 "snorkle" type top section. Upon removal, I found that the aluminum was heavily scored where it rubbed against the steel. The use of an alumin; /archives//html/Towertalk/1998-10/msg00286.html (7,961 bytes)
7. [TowerTalk] Aluminum mast (score: 1): Author: wb2dne@ix.netcom.com (wb2dne@ix.netcom.com); Date: Sun, 11 Oct 1998 20:15:14 -0500 (CDT); Yes!, I've noticed the same here. I use a 24 foot, 2"OD, 0.25" wall 6061 T6 aluminum mast for my VHF-UHF stack without a bearing or bushing at the top of the tower and a concerning amount of the alum; /archives//html/Towertalk/1998-10/msg00287.html (8,715 bytes)
8. [TowerTalk] Aluminum mast (score: 1): Author: mjirvine@nbnet.nb.ca (mjirvine); Date: Sun, 11 Oct 1998 22:42:58 -0300; Why wouldn't you automatically put a bearing in. Metal on metal will always wear. T6 aluminum tower and a top plate. Of the recent a steel mast. -- FAQ on WWW: http://www.contesting.com/towertalkfaq.; /archives//html/Towertalk/1998-10/msg00288.html (9,608 bytes)
9. [TowerTalk] Aluminum mast (score: 1): Author: w7ni@teleport.com (Stan Griffiths); Date: Mon, 12 Oct 1998 02:15:09 -0700; Well, I would not necessarily use a thrust bearing to prevent steel on steel from wearing. I think it would outlast me, in most cases . . . Stan w7ni@teleport.com -- 66'9k'?:'<@'7:'h;'jj'7:'8m'=;':h'; /archives//html/Towertalk/1998-10/msg00312.html (10,562 bytes)
10. [TowerTalk] Aluminum mast (score: 1): Author: w8ji.tom@MCIONE.com (w8ji.tom); Date: Mon, 12 Oct 1998 19:25:01 -0400; Anyone ever done a strength vs weight vs cost analysis of common mast sizes? 73 Tom -- FAQ on WWW: http://www.contesting.com/towertalkfaq.html Submissions: towertalk@contesting.com Administrative req; /archives//html/Towertalk/1998-10/msg00319.html (7,659 bytes)
11. [TowerTalk] Aluminum mast (score: 1): Author: d.dimitry@mci2000.com (d.dimitry); Date: Tue, 13 Oct 1998 10:47:38 -0500; This question was also asked on at least one other post. This exercise would get kind of tricky. The reason why is because aluminum is so dissimiliar in weight compared to steel-- 38% per the same v; /archives//html/Towertalk/1998-10/msg00376.html (8,082 bytes)
12. [TowerTalk] Aluminum mast (score: 1): Author: w7ni@teleport.com (Stan Griffiths); Date: Tue, 13 Oct 1998 15:31:03 -0700; Hi Tom, I wrote such an article in 1992 and submitted to K5RC for publishing the NCJ. I can't remember if it ever got published or not. Anyway, I still have the orginal and I plan to mail you a copy; /archives//html/Towertalk/1998-10/msg00387.html (9,586 bytes)
13. [TowerTalk] Aluminum mast (score: 1): Author: w7ni@teleport.com (Stan Griffiths); Date: Thu, 15 Oct 1998 13:24:46 -0700; Hi OM, It may well have been published in the March/April issue of 1993 NCJ. It turns out that particular issue is missing from my files and I can't check it to see. Can someone else check it and let; /archives//html/Towertalk/1998-10/msg00478.html (10,387 bytes)
14. [TowerTalk] Aluminum mast (score: 1): Author: tao@skypoint.com (Tod Olson); Date: Thu, 15 Oct 1998 21:00:21 -0500; Stan: I have sent my complete set of NCJ's to ARRL HQ for conversion to a CD-ROM. I sent them in August. I was scanning through issues as I was making certain that all were there and believe that I s; /archives//html/Towertalk/1998-10/msg00481.html (11,298 bytes)
15. [TowerTalk] Aluminum mast (score: 1): Author: TOMK5RC@aol.com (TOMK5RC@aol.com); Date: Fri, 16 Oct 1998 10:32:54 EDT; << It may well have been published in the March/April issue of 1993 NCJ. It turns out that particular issue is missing from my files and I can't check it to see. That's the right issue, Stan. I'll sc; /archives//html/Towertalk/1998-10/msg00497.html (8,133 bytes)
16. [TowerTalk] ALUMINUM MAST (score: 1): Author: rthorne@arn.net (Richard Thorne); Date: Mon, 26 May 1997 14:00:59 -0700; I have a 18' by 2" od by .25" wall 6061-T6511 aluminum mast. Anybody out there know the yield strength? I got a copy of the mast program, "MARC", from K7LXC. Nice software, easy to use. I would recom; /archives//html/Towertalk/1997-05/msg00601.html (6,995 bytes)
17. [TowerTalk] ALUMINUM MAST (score: 1): Author: steve@gamecash.com (Steve Weisbrod); Date: Mon, 26 May 97 16:09:00 -0600; I just found the exact mast and as near as I can tell from a number of sources it is 40000 PSI. I just put a Force 12 4BA at 11' above the tower and a EF320 at 1.5' above the tower. They are rated a; /archives//html/Towertalk/1997-05/msg00602.html (7,896 bytes)
18. [TowerTalk] ALUMINUM MAST (score: 1): Author: thompson@mindspring.com (David L. Thompson); Date: Mon, 26 May 1997 21:33:33 -0400 (EDT); About a dozen years ago Dan Britt(SK) K4URK (Britt's Two Way) worked a deal for several Atlanta Hams for a 20' alum mast that was very strong (as I remember it was 85,000psi). Price was about $180 an; /archives//html/Towertalk/1997-05/msg00608.html (7,515 bytes)
19. [TowerTalk] Aluminum mast (score: 1): Author: "Bruce Ferratt" <uglyatc@msn.com>; Date: Tue, 14 Mar 2006 22:56:11 -0500; Hello and thanks for letting me post a question. How strong is a solid aluminum mast compared with a walled/hollow mast? I secured a solid, round 12' aluminum mast 6061-T6511 grade. What is the likel; /archives//html/Towertalk/2006-03/msg00285.html (7,031 bytes)
20. Re: [TowerTalk] Aluminum mast (score: 1): Author: Jim Lux <jimlux@earthlink.net>; Date: Wed, 15 Mar 2006 06:14:13 -0800; almost all the strength for a round member comes from the outside. Consider bending.. the maximum stress is at the edges For torsion, the derivation is a bit trickier, but it's the same So, to answer; /archives//html/Towertalk/2006-03/msg00290.html (8,209 bytes)

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