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41. Re: [TowerTalk] polyrod (score: 1): Author: "Keith Dutson" <kdutson@sbcglobal.net>; Date: Sun, 1 May 2005 11:08:38 -0500; Do you know of anyone who experienced a failure after the rod was installed? If not, there is really no issue here as it has been stated before that the manufacturer replaced failed coiled product. 7; /archives//html/Towertalk/2005-05/msg00007.html (10,601 bytes)
42. Re: [TowerTalk] polyrod (score: 1): Author: "Michael Tope" <W4EF@dellroy.com>; Date: Sun, 1 May 2005 09:17:16 -0700; I don't know if Kurt's analysis took this into account, Tom. It would interesting to see where the break even point occurs between the effect of the catenary in the insulated steel span and effect of; /archives//html/Towertalk/2005-05/msg00008.html (10,195 bytes)
43. Re: [TowerTalk] polyrod (score: 1): Author: "Jim Lux" <jimlux@earthlink.net>; Date: Sun, 1 May 2005 09:31:51 -0700; It gets pretty complex, pretty quick, when you start looking at the properties of angled catenaries. I was trying to write some simple(!) routines to generate catenary curves for various cases. Turns; /archives//html/Towertalk/2005-05/msg00009.html (10,728 bytes)
44. Re: [TowerTalk] polyrod (score: 1): Author: "Tom Rauch" <w8ji@contesting.com>; Date: Sun, 1 May 2005 12:56:05 -0400; we're making this I disagree Ken. I don't want to use a critical product manufactured by a company who doesn't understand how the product they sell behaves. 73 Tom __________________________________; /archives//html/Towertalk/2005-05/msg00010.html (8,496 bytes)
45. Re: [TowerTalk] polyrod (score: 1): Author: "Roger K8RI on Tower" <k8ri-tower@charter.net>; Date: Sun, 1 May 2005 19:01:06 -0400; <snip> Having spent a lot of time with fiberglass the last few years while building an airplane. This is an aeroplane capable of aerobatics and I've flown one close to 350 MPH while pulling 3 1/2 Gs; /archives//html/Towertalk/2005-05/msg00016.html (13,933 bytes)
46. [TowerTalk] polyrod (score: 1): Author: Lee Crocker <w9oy@yahoo.com>; Date: Sun, 1 May 2005 09:22:53 -0700 (PDT); I don't have any polyrod. I have been following the thread. It was my understanding that the failed polyrod was replaced by the manufacturer. Does this mean I can just call up polyrod and ask for a r; /archives//html/Towertalk/2005-05/msg00026.html (9,097 bytes)
47. Re: [TowerTalk] polyrod (score: 1): Author: "Tom Rauch" <w8ji@contesting.com>; Date: Mon, 2 May 2005 18:05:02 -0400; My point exactly. It certainly DOES matter why it failed, and it isn't up to customers to guess why. It could have been heat (they did warn me about heat, but said it had to be a lot hotter than I e; /archives//html/Towertalk/2005-05/msg00033.html (9,316 bytes)
48. Re: [TowerTalk] polyrod (score: 1): Author: "Roger K8RI on Tower" <k8ri-tower@charter.net>; Date: Mon, 2 May 2005 19:20:37 -0400; Agreed The summer sun on an unventelated, metal shed may create temperatures beyong the those necessary for softening the resin (Vinyl Ester, or epoxy). A fiberglass airplane with a colored paint jo; /archives//html/Towertalk/2005-05/msg00034.html (11,592 bytes)
49. Re: [TowerTalk] polyrod (score: 1): Author: k3mm@comcast.net; Date: Mon, 02 May 2005 23:38:17 +0000; -- Original message -- _______________________________________________ See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather Stations", and lot's more. Call Toll Free, 1-800-; /archives//html/Towertalk/2005-05/msg00035.html (10,378 bytes)
50. Re: [TowerTalk] polyrod (score: 1): Author: k3mm@comcast.net; Date: Mon, 02 May 2005 23:54:53 +0000; Realize that black rod in a coil or encased in black corrigated drain tube as a shipping container and exposed to sunlight will get very hot, even if the ambient temperature is not high. In a coil, t; /archives//html/Towertalk/2005-05/msg00037.html (10,748 bytes)
51. Re: [TowerTalk] polyrod (score: 1): Author: k3mm@comcast.net; Date: Tue, 03 May 2005 00:22:03 +0000; We got NO official analysis back from the factory. They simply replaced the coils we claimed as defective and we promised to uncoil them all as soon as received to avoid a repeat.. It took a several; /archives//html/Towertalk/2005-05/msg00039.html (14,091 bytes)
52. Re: [TowerTalk] polyrod (score: 1): Author: "RICHARD BOYD" <ke3q@msn.com>; Date: Mon, 2 May 2005 20:41:14 -0400; As I recall, it was emphasized to us that the product is quite strong, to the rated strength, in the axial direction, and was designed only for an axial load. It was emphasized that load in other axe; /archives//html/Towertalk/2005-05/msg00040.html (15,717 bytes)
53. Re: [TowerTalk] polyrod (score: 1): Author: "Roger K8RI on Tower" <k8ri-tower@charter.net>; Date: Mon, 2 May 2005 21:17:39 -0400; Any dark color should be avoided with fiberglass and resin (epoxy, or vinyl Ester) Vinly Ester resin has a bit higher critical temperature after cure and it has a much lower viscosity than epoxy whi; /archives//html/Towertalk/2005-05/msg00041.html (19,043 bytes)
54. Re: [TowerTalk] polyrod (score: 1): Author: "Tom Rauch" <w8ji@contesting.com>; Date: Mon, 2 May 2005 21:43:16 -0400; shady place...even better a temperature controlled place...or paint the coil white...or order white rod! There may be something to that. The rod I have is white. The surface is just as shiny and smo; /archives//html/Towertalk/2005-05/msg00042.html (9,018 bytes)
55. Re: [TowerTalk] polyrod (score: 1): Author: Cqtestk4xs@aol.com; Date: Mon, 2 May 2005 23:23:54 EDT; A quick comment on my stored 5/16 inch Polyrod.......... I have around 600 feet still coiled up. It has been stored in the same sized eight foot coil in the shade for two years. Today I checked it ou; /archives//html/Towertalk/2005-05/msg00044.html (8,243 bytes)
56. Re: [TowerTalk] polyrod (score: 1): Author: "Roger K8RI on Tower" <k8ri-tower@charter.net>; Date: Mon, 2 May 2005 23:35:23 -0400; Just as a point of interest on color and heat. In a glass covered solar heater using Forest Green as the color on the heating element, if the water flow stops, I believe the resting temperature of th; /archives//html/Towertalk/2005-05/msg00045.html (9,467 bytes)
57. Re: [TowerTalk] polyrod (score: 1): Author: "AA6DX - Mark" <aa6dx@arrl.net>; Date: Mon, 2 May 2005 20:50:47 -0700; And .. when a cup of boiling water, thrown into the air (THE WATER, NOT THE CUP!) .. NOTHING would come down to hit the ground, when it was 4Ø -6Ø F below zero .. flat discapeeeered ..; /archives//html/Towertalk/2005-05/msg00046.html (10,475 bytes)
58. Re: [TowerTalk] polyrod (score: 1): Author: "Keith Dutson" <kdutson@sbcglobal.net>; Date: Mon, 2 May 2005 23:09:21 -0500; One could think of an object here on Earth as an antenna receiving energy from the sun. Since the sun is transmitting about 4 × 10**26 watts, it is not difficult to understand why that Al plate; /archives//html/Towertalk/2005-05/msg00047.html (10,643 bytes)
59. Re: [TowerTalk] polyrod (score: 1): Author: "Roger K8RI on Tower" <k8ri-tower@charter.net>; Date: Tue, 3 May 2005 02:04:35 -0400; One could think of an object here on Earth as an antenna receiving energy from the sun. Since the sun is transmitting about 4 × 10**26 watts, it is not difficult to understand why that Al plate; /archives//html/Towertalk/2005-05/msg00049.html (11,973 bytes)
60. Re: [TowerTalk] polyrod (score: 1): Author: "Martin, AA6E" <martin.ewing@gmail.com>; Date: Tue, 3 May 2005 11:14:51 -0400; Solar heating of materials is not a "black and white" issue. You have to think about wavelengths. The input from the Sun (after atmospheric effects) is primarily in the visible wavelengths. (That's w; /archives//html/Towertalk/2005-05/msg00056.html (12,139 bytes)

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