I'm sure that there are many who have done this, but, the manufacturers don't supply stainless for the tower leg joints. As inexpensive as a bolt kit for Rohn 25 is, I can replace them in 20 - 25 yea
==> For our tower applications, we're looking at resistance to shearing on the bolts. The need to achieve perfect torque values is not so necessary for this sort of application. The specified torque
Hi:<< For our tower applications, we're looking at resistance to shearing on the bolts. The need to achieve perfect torque values is not so necessary for this sort of application. >> I was taught th
Author: w7ni@teleport.com (Stan or Patricia Griffiths)
Date: Wed, 10 Nov 1999 20:36:52 -0800
Just wanted to clear up what is in a standard tower leg bolt kit from Rohn. Six bolts and six nuts. That is all. No washers and no PAL nuts. At least this is the case for 20G, 25G, 45G, and 55G. I ca
==> Upward force, as well. ==> Good grief, no need to ever tighten the hardware so much that the tubes are deformed. If you do, you have probably exceeded the allowable percentage of yield values on
Well, you are about to hear of one. The only tower I have ever lost. About 60' of Rohn 25. I put it up in the summer, and really put a hurt on the bolts. Then came January and a hard freeze ( at leas
........<snip> .......<snip> Actually, Rohn specifically states to tighten the bolts until the tubes deform. -- FAQ on WWW: http://www.contesting.com/towertalkfaq.html Submissions: towertalk@contesti
I have been around several Rohn experts; maybe Steve can comment on this also. There is no necessity to put any additional hardware on the tower other than the bolts and nuts that come with the towe
==> Absolutely ! If you keep packing away on the tower bolts until the tubes have distorted, you have probably exceeded the allowable percentage of yield values on the bolts; and to what purpose ?? F
Have you ever tried to disassemble a tower with deformed legs from overtightening? A ROYAL PAIN ! The ONLY purpose I can see for the nuts is to keep the bolts from falling out. The bolts hold the leg
Hi: << I can't imagine that you could squeeze a leg hard enough to create enough friction to take all the downward force, especially on the bottom section of a tall tower. I have to believe the bolts
As but a few examples: For 316 SS bolts in the sizes of : 1/4", 5/16", 3/8". AA) Tightening to 65% of yield strength on the above sizes, using a 316 SS bolt, SA-193 Grade B8M, Class1, with bolts havi
So... Is it the general opinion that these towers would be better off with a pins and cotter pins. That would eliminate all the over/under tightening issues and would be secure as far as falling out.
==> Where did you get that idea? Are you recalling something that you might have read on another reflector? N5RP -- FAQ on WWW: http://www.contesting.com/towertalkfaq.html Submissions: towertalk@cont
==> I don't think this was covered by anybody, but I suppose, that for some, it might just go to add extra assurance that, despite the use of mail and female tube size differences, one is not still t
Several different places in the Rohn catalog state: "Be sure to tighten all leg bolts until they partially flatten the sleeves, causing the sleeves to actually grip the legs inside." You can look it
AGREE (N4KG) HUH? Have you looked at the leg joints? Do you really believe that the PRESSURE of the connection against the inner leg is what supports the tower and NOT the bolt itlself? This makes no
In a properly guyed Rohn 25/45 tower, I would expect both bolts and compression to provide *none* of the strength. I would expect that all the legs should be in compression all the time. The bottom e
<< Tom Wagner wrote: >> And I agree completely. 73 (= Best Regards) de: Ron ka4inm@qsl.net VISIT my HAM WEB SITE at: http://www.qsl.net/ka4inm using LINUX here & loving it! -- FAQ on WWW: http://www.
Author: w7ni@teleport.com (Stan or Patricia Griffiths)
Date: Mon, 15 Nov 1999 22:33:08 -0800
By this do you mean that you tightened the heck out of them? I just take them up snug. One guy wrote me an said there was never any need to deform the tower leg by tightening the bolts, but I have to