[Antennas] Cleaning Aluminum ....question

2002年10月31日 01:04:26 -0500

that would be 73, Dr. Barry L. Ornitz WA4VZQ [email protected]
maybe we can get dr. barry out of the woodwork to answer this one??? hey
dr barry.. your info on plasticizers in coax was terrific... can you help
us with this chemical puzzle? best 73 paul w8jn
----- Original Message -----
From: "A10382" <[email protected]>
To: <[email protected]>; "Mike J Maloney" <[email protected]>
Cc: <[email protected]>; <[email protected]>
Sent: Thursday, October 31, 2002 12:25 AM
Subject: Re: [Antennas] Cleaning Aluminum ....question
> There is a frequent poster on this list who seems to be a chemist. I
think
> I'd like to hear from him before using anything acidic on aluminum. It
may
> be only anecdotal, but I was always led to believe that acid and aluminum
> are not a good mix.... something about encouraging corrosion.
>> Of course, we all follow some sage advice that may not be relevant
anymore -
> like not storing lead-acid batteries directly on concrete. I don't know
> why, but it's father-to-son lore that's been passed down ever since there
> were cars. My three spare lead-acid batteries get topped off every few
> months and ARE sitting on a wood pallet in the storage barn. It might not
> help, but it can't hurt. Besides, my dad would still to this day say
> "Didn't I teach you to put batteries on a wood block?"
>> 73, Frank
>>> ._._.
> ----- Original Message -----
> From: <[email protected]>
> To: "Mike J Maloney" <[email protected]>
> Cc: <[email protected]>; <[email protected]>
> Sent: Wednesday, October 30, 2002 11:59 PM
> Subject: Re: [Antennas] Cleaning Aluminum ....question
>>> > One trick I have used in cleaning aluminum on antennas, etc is
> > the Floridic acid mix they use to spray on aluminum AC outside
> > coils...talk about clean!!! I had a DB420 UHF rptr antenna that was
> > HEAVILY oxided (was on the Gulf Coast of Texas for 15 years!)..
> > took the elements off, sprayed them with a double of what they
> > normally used in the Floridic acid (its cut I think 9:1 with
> > water) and after letting it soak and foam up, rinsed them off...
> > and the antenna looked BRAND NEW!!! It shined in the sun after going
> > up on the tower...didnt hurt any of the phenolic insulators or
> > anything else...(and the antenna has been in the air for 6+ years
> > now)..You can get the floridic acid at AC supply shops...CAREFUL
> > with it though...it WILL burn you and SHOULD be diluted...though
> > I would make it stronger than what they recommend since you arent
> > cleaning small AC coils...if you can immerse the antenna parts in the
> > solution, that will also clean the inside as well (the UHF dipoles
> > did fit nicely in a buck of the solution! and the foam came out of
> > the weep holes.....so I know that also got cleaned!)
> >
> > Chris
> > WB5ITT
> >
> >
> > Mike J Maloney wrote:
> > >
> > > Hi Kees,
> > > Still enjoying that blueracer deluxe! I restored an old Wilson SY33
> > > late last year. The parts were heavy alum, but plated (rusted) steel
> > > clamps and fasteners. The traps were Mosley clones. I replaced all
> > > the fasteners and clamps with all-stainless hardware, and bought a new
> > > boom to mast camp from Hygain. Money well spent I think.
> > >
> > > I have cleaned up aluminum parts using the old ARRL handbook formula
> with
> > > caustic soda or common lye. Aluminum comes out looking like brand
new!
> > > Hardest part was finding the lye, but a search on ebay should find
> some.
> > > Also Scothbrite pads are good for cleaning mating joints before
> applying
> > - - -
> >
> > Your moderator for this list is:
> > Larry Wilson KE1HZ [email protected]
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