I agree to a point. Most ham radio uses for Rohn 45G and 55G do not come
close to the vertical strength rating of these towers. I used plain axle
grease on the legs of my 150 foot 45, more to help with assembly than taking
apart. I would not use any kind of lube on the bolts as they are
galvanized.
73, Keith NM5G
-----Original Message-----
From: towertalk-bounces@contesting.com
[mailto:towertalk-bounces@contesting.com] On Behalf Of K8RI
Sent: Friday, July 06, 2012 9:07 AM
To: towertalk@contesting.com
Subject: Re: [TowerTalk] Tower section assembly question
On 7/6/2012 8:01 AM, John Harper wrote:
> Thanks for all the info, both via the list & email. I did wire brush the
legs yesterday and will pick up some anti-sieze compound today.
In my opinion, I would never use any lube on tower sections where they join.
Read the ROHN on-line manual or even call the company and ask their opinion.
It reduces the strength of the joint, putting most of the weight on the
bolts. I'd much rather use a tower jack to get them apart, rather than lube
the sections. The 25G and 45G both use the friction of the galvanized joint
to add strength. I do use never seize on the bolts. I use a taper pin
punch to enlarge the holes "when necessary" if the galvanizing prevents the
bolts from going in easily. They should be a snug fit and according to the
manual, never screwed in using the threads to force the bolt in, nor should
the bolt holes be reamed.
73 and good luck,
Roger (K8RI)
>
> 73,
>
> John AE5X
> http://www.ae5x.com/blog
>
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|