Mail Archive Search: <+subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[Towertalk\]\s+mast\s+disaster\s+avoidance\s*$/>

Results:

References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[Towertalk\]\s+mast\s+disaster\s+avoidance\s*$/: 6 ]

Total 6 documents matching your query.

1. [Towertalk] mast disaster avoidance (score: 1): Author: jljarvis@adelphia.net (jljarvis); Date: Thu, 11 Jul 2002 10:07:52 -0400; Folks: This thread still seems to persist. Some comments are and a question are in order: N4KG recommended either placing the mast inside the tower while at the 20-30' level, or using a crane. He fur; /archives//html/Towertalk/2002-07/msg00287.html (9,347 bytes)
2. [Towertalk] mast disaster avoidance (score: 1): Author: jljarvis@adelphia.net (jljarvis); Date: Thu, 11 Jul 2002 14:00:22 -0400; Mike... If you had a ginpole with a 2 wheel block on top (never seen one, myself. Do they exist?), you would reduce the load on each run of line, proportional to the number of lines. But the load on; /archives//html/Towertalk/2002-07/msg00294.html (8,307 bytes)
3. [Towertalk] mast disaster avoidance (score: 1): Author: ve7hcb@rac.ca (Chris BONDE); Date: Thu, 11 Jul 2002 15:20:15 -0700; It has been awhile since I have done any mechanical stuff with pulleys. I think that you are on the right road but not all the way. If you are lifting a 100lb weight with one pulley at the top, you n; /archives//html/Towertalk/2002-07/msg00306.html (10,071 bytes)
4. [Towertalk] mast disaster avoidance (score: 1): Author: jljarvis@adelphia.net (jljarvis); Date: Thu, 11 Jul 2002 18:38:43 -0400; YES! you got it, Chris. There's a 100 lb vector due to the load, and another due to the lift. With ginpoles we know, it doesn't matter how many ropes and wheels you put in the system--there's still 2; /archives//html/Towertalk/2002-07/msg00307.html (11,935 bytes)
5. [Towertalk] mast disaster avoidance (score: 1): Author: k4oj@tampabay.rr.com (Jim White); Date: Thu, 11 Jul 2002 20:07:08 -0400; WHAT I FREQUENTLY DO IS USE THE GIN POLE NORMALLY AND THE WHEN THE ROPE GETS DOWN TO GROUND LEVEL USE A SNATCH BLOCK SO A HORIZONTAL PULL IS NOW WHAT IS NEEDED....THEN A SEPARATE BLOCK AND TACKLE ARR; /archives//html/Towertalk/2002-07/msg00315.html (13,451 bytes)
6. [Towertalk] mast disaster avoidance (score: 1): Author: SPELUNK.SUENO@prodigy.net (EUGENE SMAR); Date: Thu, 11 Jul 2002 23:46:47 -0400; TT: K4OJ's explanation is another way of saying energy is conserved. With or without the pulleys the work is the same, e.g., 100 pound tower section hauled 70 feet up is 7000 foot-pounds of work (ene; /archives//html/Towertalk/2002-07/msg00327.html (15,799 bytes)

Current List: 1 - 6
Page: [1]