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Total 11 documents matching your query.

1. Masts and stacking considerations (score: 1): Author: SPARHAWK@avtcorp.com (Bryan Sparrowhawk); Date: Fri, 14 Jun 1996 07:12:33 -0800; I've seen a lot of talk concerning the 3 inch Rohn thrust bearing .. does this mean many of you are actually using larger than 2 inch masts out there? Do most beam's boom-to-mast brackets and commonl; /archives//html/Towertalk/1996-06/msg00093.html (8,389 bytes)
2. Masts and stacking considerations (score: 1): Author: fisher@hp-and2.an.hp.com (Tony Brock-Fisher); Date: Fri, 14 Jun 1996 10:34:13 -0400; Bryan I considered the hi-strength mast route, then changed my mind in favor of a sidemount. The cost is comparable, but the advantages of being able to climb to the feedpoint of the top antenna, as; /archives//html/Towertalk/1996-06/msg00094.html (8,027 bytes)
3. Masts and stacking considerations (score: 1): Author: seay@alaska.net (Del Seay); Date: Fri, 14 Jun 1996 07:05:50 -0700; Standard way of minimizing interaction. Mine have been that way for years. It's a pain in the butt to have to turn the antennas 90 degrees to change bands, but other than that, it is a perfectly legi; /archives//html/Towertalk/1996-06/msg00095.html (8,153 bytes)
4. Masts and stacking considerations (score: 1): Author: K7LXC@aol.com (K7LXC@aol.com); Date: Fri, 14 Jun 1996 11:58:36 -0400; Hi, Bry -- The use of a real 3 inch mast is not very common. The confusion may be from the Rohn part number TB-3 is for their 2 inch thrust bearing. The 3 inch TB is part TB-4. Boom-to-mast bracketer; /archives//html/Towertalk/1996-06/msg00096.html (9,578 bytes)
5. Masts and stacking considerations (score: 1): Author: fisher@hp-and2.an.hp.com (Tony Brock-Fisher); Date: Fri, 14 Jun 1996 12:54:48 -0400; I think some mechanical engineers would disagree with you on this one. Increasing the diameter dramatically increases the section modulus - and therefore the maximum moment the mast can withstand. It; /archives//html/Towertalk/1996-06/msg00097.html (8,206 bytes)
6. Masts and stacking considerations (score: 1): Author: barry@w2up.wells.com (barry); Date: Fri, 14 Jun 96 13:58:47 EDT; Steve - I believe you are wrong. I don't have the formula handy for calculating tensile strength of a round member, but diameter is the single-most important factor, as it is exponential, not linear.; /archives//html/Towertalk/1996-06/msg00098.html (8,543 bytes)
7. Masts and stacking considerations (score: 1): Author: pacarch@wolfenet.com (a. kerner); Date: Fri, 14 Jun 1996 12:23:12 -0700 (PDT); When I used to use 3" mast, I reduced it to 2" from below the thrust bearing (mondo!) to the rotator. This can be done by looking at pipe tables for id and od's. No bending strength is needed below t; /archives//html/Towertalk/1996-06/msg00099.html (10,381 bytes)
8. Masts and stacking considerations (score: 1): Author: mraz@rockdal.aud.alcatel.com (Kris Mraz AA5UO); Date: Fri, 14 Jun 1996 17:09:07 -0500; I only know what I've been told by Dick, K5IU. The force on the mast above the bearing is transferred to the mast below the bearing. So in your case the 2" pipe may bend when a strong enough force is; /archives//html/Towertalk/1996-06/msg00103.html (8,149 bytes)
9. Masts and stacking considerations (score: 1): Author: rfgerald@juno.com (Floyd Gerald); Date: Fri, 14 Jun 1996 20:45:30 PST; Hi mine are 90degrees out and I love it and they both work fine! 73 Floyd N5FG PS I have the 2 el 40 and a tribander above it; /archives//html/Towertalk/1996-06/msg00105.html (7,577 bytes)
10. Masts and stacking considerations (score: 1): Author: w7ni@teleport.com (Stan Griffiths); Date: Sat, 15 Jun 1996 00:53:26 -0700 (PDT); Unfortunately, I have not been following this thread, but most of the time people are interested in the bending strength of a mast with a stack on it and not the tensile strength. The bending streng; /archives//html/Towertalk/1996-06/msg00107.html (9,866 bytes)
11. Masts and stacking considerations (score: 1): Author: w7ni@teleport.com (Stan Griffiths); Date: Sat, 15 Jun 1996 02:03:41 -0700 (PDT); It makes a huge difference WHERE the change from 3 inch to 2 inch mast material takes place. If you stay with 3 inch mast for a couple of feet below the bearing and then taper to 2 inch, that is FAR; /archives//html/Towertalk/1996-06/msg00108.html (8,480 bytes)

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