Steve, Mark,
It is not that important how much torque or stretch you have in the bolt.
Torquing has been used for generations and has been accurate enough
disregarding variations in the friction.
I believe that the important thing is that the screws not unscrew themselves
after a couple of years. You are not depending on the friction between the
items bolted together in this case, right? Isn't it the sheer strength of the
bolt that is the key here?
Hans - N2JFS
-----Original Message-----
From: Steven Kerns <n3fti@yahoo.com>
To: towertalk@contesting.com
Sent: Thu, Apr 29, 2010 4:39 pm
Subject: Re: [TowerTalk] Rohn 45 Tower Bolts Torque Setting
Mark,
Using torque measurement is not accurate because of friction related to
different surface tensions of the fasteners and the difference in lubricants.
To get an an accurate measurement you should read the bolt stretch with a dial
indicator using a bolt stretch gauge. One can be purchased here:
http://www.summitracing.com/parts/ARP-100-9942/ ;-)
Steve, N3FTI
--- On Thu, 4/29/10, Mark Robinson <markrob@mindspring.com> wrote:
> From: Mark Robinson <markrob@mindspring.com>
> Subject: [TowerTalk] Rohn 45 Tower Bolts Torque Setting
> To: towertalk@contesting.com
> Date: Thursday, April 29, 2010, 10:59 AM
> I started to bolt some of my Rohn 45
> together. Is there a torque setting for
> the tower leg bolts anywhere. How tight should they be?
>
>
>
> 73 Mark N1UK
>
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