[TowerTalk] Lubrication

[Erik Jakobsen]

> Hi Erik,

Hi Mike, and thanks for a very fast reply.

> I don't think you have anything to worry about with stainless
> steel against aluminum. In my experience there isn't a lot
> of galvanic action with that combination of metals. You should
> be concerned however with galling (seizing) if you are using
> stainless nuts on those stainless u-bolts. Stainless nuts will
> fuse with stainless bolts at the high pressures that result when
> you tighten the nuts. I learned this the hard way. Once this
> happens, you won't be able to get the nuts off the u-bolt
> without a hacksaw. Molybdenum Disulfide grease is an
> excellent anti-seize agent. Every since I had the
> boom-to-mast U-bolts on a 2 element 40 seize on me
> during an install, I have been using Moly-Disulfide with
> good success.

Ok about not worring having the stainless steel against the aluminum.
I do have the stainless nuts, and also stainless springs. I can confirm, 
that I had the same experience. And standing there, and will screw a nut 
backwards and the u-bolts broke, and the new parts is placed in a store 
in Australia, one have to count to more than 10 :-).

I think the reason is the high temperatures that occures when thighten 
the nuts, and its like they got welded.

I'll see if I can buy something like the Molybdenum Disulfide grease 
here in Denmark.


> 73 de Mike, W4EF.................................
> 
> 

73, and thanks for the tip, and have a nice last Easterday. (I am off 
the work all the year :-)).

> 
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-- 
Med venlig hilsen - Best regards.
Erik Jakobsen - eja at urbakken.dk.
Licensed radioamateur with the callsign OZ4KK.
SuSE Linux 9.0 Proff.
Registered as user #319488 with the Linux Counter, http://counter.li.org.