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Total 10 documents matching your query.

1. [TowerTalk] Mast wall thickness (score: 1): Author: ke4rna@Traveller.COM (Donnie Murray (KE4RNA)); Date: Fri, 10 Apr 1998 19:36:46 +0000; What is the recommended wall thickness for 2" chrome-moly tubing used for a mast? I will have 5' inside the tower with a thrust bearing at the top. Two feet above that will be an antenna with 18 sq f; /archives//html/Towertalk/1998-04/msg00277.html (7,303 bytes)
2. [TowerTalk] Mast wall thickness (score: 1): Author: dick@libelle.com (Dick Flanagan); Date: Fri, 10 Apr 1998 17:56:28 -0800; 50,000 PSI at 0.188" wall should be OK at 80 mph winds. 60,000 PSI at 0.250" wall should be OK at 100 mph winds. 73, Dick -- Dick Flanagan W6OLD CFII Minden, Nevada DM09db (South of Reno) Visit http:; /archives//html/Towertalk/1998-04/msg00279.html (7,662 bytes)
3. [TowerTalk] Mast wall thickness (score: 1): Author: K7LXC@aol.com (K7LXC); Date: Fri, 10 Apr 1998 21:32:12 EDT; Morgan County, AL, is only a 70 MPH windspeed zone so you're off the hook for big winds. What you need is the MARC Program - the Mast, Antenna and Rotator Calculator. Plug in the wind speed and the a; /archives//html/Towertalk/1998-04/msg00284.html (7,776 bytes)
4. [TowerTalk] Mast wall thickness (score: 1): Author: twoway@scoden.ma.ultranet.com (Scott Bullock); Date: Sat, 11 Apr 1998 05:34:32 -0400; According to my mast calculator which only does 90 or 100 mph wind calculations, at 90 mph you need a 68,939.68 psi yield strength mast. I'm not sure what wind speed your location is. This would have; /archives//html/Towertalk/1998-04/msg00291.html (7,908 bytes)
5. [TowerTalk] Mast Wall Thickness (score: 1): Author: Chris Pinholster <k4win@mac.com>; Date: Mon, 24 Feb 2014 12:39:33 -0500; I have been researching tower mast material. Both aluminum and steel. If aluminum 60601 tubing with 2"OD and .125 wall fails at 35000 ps, what happens when you increase wall thickness? If you increas; /archives//html/Towertalk/2014-02/msg00242.html (7,627 bytes)
6. Re: [TowerTalk] Mast Wall Thickness (score: 1): Author: Stan Stockton <wa5rtg@gmail.com>; Date: Tue, 25 Feb 2014 06:14:16 -0600; I have no idea what the strength is but I have a 2 inch (3/8 wall) x 24 foot mast with about 15 feet out of tower and 9 feet inside tower at a location that has been installed for 39 years. It has ha; /archives//html/Towertalk/2014-02/msg00244.html (8,732 bytes)
7. Re: [TowerTalk] Mast Wall Thickness (score: 1): Author: Jim Lux <jimlux@earthlink.net>; Date: Tue, 25 Feb 2014 05:47:07 -0800; If aluminum 60601 tubing with 2"OD and .125 wall fails at 35000 ps, what happens when you increase wall thickness? Not much it might seem, as it happens. The outer part of the wall carries the peak s; /archives//html/Towertalk/2014-02/msg00245.html (8,537 bytes)
8. Re: [TowerTalk] Mast Wall Thickness (score: 1): Author: john@kk9a.com; Date: Tue, 25 Feb 2014 09:54:03 -0500; Yes a thicker wall will make the mast stronger. Keeping the same wall thickness and going to a larger diameter will also make it stronger and use less material. I do not see how the amount inside the; /archives//html/Towertalk/2014-02/msg00247.html (8,029 bytes)
9. Re: [TowerTalk] Mast Wall Thickness (score: 1): Author: Grant Saviers <grants2@pacbell.net>; Date: Tue, 25 Feb 2014 10:49:33 -0800; I have the same question for a tower in design. My structural engineering skill is dubious, but nothing I've designed and built has failed, so caveat emptor! There are some handy on-line calculators; /archives//html/Towertalk/2014-02/msg00250.html (12,903 bytes)
10. Re: [TowerTalk] Mast Wall Thickness (score: 1): Author: Chris Pinholster <k4win@mac.com>; Date: Tue, 25 Feb 2014 17:01:15 -0500; I plan on putting a 2element Cubex quad and a Force 12 ef140S rotatable dipole on a 2"OD 1.5 ID, 6061 T6, 10 ft long. The calculations of 60% stronger tubing, using the MARC program looks good to me; /archives//html/Towertalk/2014-02/msg00251.html (10,246 bytes)

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