[AMRadio] WD-40 Experience


David Knepper collinsradio at comcast.net
Thu Dec 12 19:11:34 EST 2013


Thank you, Eric, for confirming what many of know about the wonder of WD-40.

However, I do not recommend it for cleaning switch contacts.

David Knepper - W3CRA/W3ST
Collins Radio Association
www.collinsra.com
Join the CRA today
-----Original Message----- 
From: Eric Nelson
Sent: Thursday, December 12, 2013 4:05 PM
Cc: AMradio
Subject: Re: [AMRadio] WD-40 Experience

I've used WD-40 off and on in pots for more than 40 years without the
negative experience you've had.  Perhaps the main difference is in the
method I've used.

After spraying the contact area inside the pot and working the control a
few times, I follow up with about 10 to 15 seconds of compressed air as I'm
working the control.  This blasts away most of the residue along with any
of the contamination that created the noise problem in the beginning.  The
control then has an extended life at least as long as if the control had
been replaced.

Eric
Sent from my desktop PC

-.-

-.-




On Thu, Dec 12, 2013 at 12:58 PM, JAMES HANLON <knjhanlon at msn.com> wrote:

> This is a true story about the use of WD-40.  Folks who are using it to
> clean pots and switches are invited to take it for what it is worth.
>
> At one time I worked for Bell Labs.  Back a good many years there was a
> hurricane in Florida which drowned the telephone exchange at the Homestead
> Air Force Base.  Bell System folks from all over the country converged to
> help dry out and restore the exchange, an electromechanical "crossbar"
> type.  My Laboratory was responsible for "Electromechanical Switching
> Equipment" including the relays and crossbar switches in the exchange, so
> we had an engineer there with the crew.  The folks decided to spray the
> crossbar switches with WD-40.  It did indeed displace the water and 
> restore
> the switches to operating condition, as the "WD" implies.  But several
> months later as the more volatile components of the WD-40 evaporated and
> the less volatile components remained behind, the switch mechanisms 
> started
> to gum up and the switch contacts went high resistance to open circuit.
>  Finally the entire exchange had to be scrapped out and replaced.
>
> Because of this experience, I do not use WD-40 to "clean" any switch
> contacts or potentiometers in my radio equipment.
>
> Jim Hanlon, W8KGI
>
> ______________________________________________________________
> Our Main Website: http://www.amfone.net
> AMRadio mailing list
> Archives: http://mailman.qth.net/pipermail/amradio/
> List Rules (must read!): http://w5ami.net/amradiofaq.html
> List Home: http://mailman.qth.net/mailman/listinfo/amradio
> Post: AMRadio at mailman.qth.net
> To unsubscribe, send an email to amradio-request at mailman.qth.net with
> the word unsubscribe in the message body.
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>
______________________________________________________________
Our Main Website: http://www.amfone.net
AMRadio mailing list
Archives: http://mailman.qth.net/pipermail/amradio/
List Rules (must read!): http://w5ami.net/amradiofaq.html
List Home: http://mailman.qth.net/mailman/listinfo/amradio
Post: AMRadio at mailman.qth.net
To unsubscribe, send an email to amradio-request at mailman.qth.net with
the word unsubscribe in the message body.

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html 



More information about the AMRadio mailing list

This page last updated 23 Nov 2017.