May I also give you some personal experience in HIGH power AC connections. All
of the connections are compression type, no solder no crimp, but metal to
metal, like copper 0000 cable and brass terminals will brass set screws. In
all of my years, it was common practice to tighten the connections to the
correct torque setting, then wait 24 to 48 hours and RE-TORQUE them as the
metal under compression relaxes after the initial setting and every time the
required torque had to be reset. I feel the same way with single crimp
connections.
Mel, K6KBE
From: David Cole <[email protected]>
To: [email protected]
Sent: Thursday, November 5, 2015 9:51 AM
Subject: Re: [Elecraft] Soldering crimped connectors is not a good thing.
Could someone recommend a good crimper please? This has been a most
interesting discussion.
--
Thanks and 73's,
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On Thu, 2015-11-05 at 12:41 -0500, Michael Blake wrote:
> leroy, thanks for your comments. I don’t know what to say other than your
> experiences are vastly different from my personal experiences as well as the
> experiences of both the telephone industry (Bell System and Verizon) and the
> automotive industry.
>
> While not intending to be mean spirited the fact that you have experienced
> this probably means that the failed connections were not really properly
> crimped.
>
> Michael Blake
> K9JRI
>
>
>
> > On Nov 5, 2015, at 11:05 AM, lmarion <[email protected]> wrote:
> >
> >
> > I have the proper tools.
> > Over time the joints have become intermittent.
> >
> > The joints I properly crimped and soldered have never become intermittent.
> > I guess the molecular bond with solder is greater ; )
> >
> > Leroy
> >
> > -----Original Message----- From: Robert Harmon
> > Sent: Thursday, November 05, 2015 8:30 AM
> > To: [email protected]
> > Subject: Re: [Elecraft] Soldering crimped connectors is not a good thing.
> >
> > thanks Mike, good info !
> >
> > 73
> > Bob
> > K6UJ
> >
> >
> >
> >
> >
> > On 11/5/15 7:18 AM, Michael Blake wrote:
> >> While many people recommend soldering crimped connectors, such as Anderson
> >> Power Poles, it is not a very good idea. The reason(s) it is neither
> >> required, nor desired, is partially as follows:
> >>
> >> 1. A PROPERLY crimped connection creates a molecular bond between the
> >> conductor and the connector that is more conductive than soldering.
> >> 2. The soldering process causes corrosion because even rosin core solder
> >> is slightly acidic.
> >> 3. The solder that flows into or onto the conductor (wire) causes it to
> >> stiffen and increases the probability that vibration or movement will
> >> cause the wire to break at that point.
> >> 4. The annealing of the copper wire is altered which also increases the
> >> possibility of wire breakage due to vibration or movement.
> >>
> >> It is absolutely necessary that the proper tool be used for the connection
> >> being crimped. If you are going to use a crimped connection it is
> >> imperative that you have a tool that matches the connector. If you do not
> >> have the proper tool then DO NOT use crimped connections.
> >>
> >> Michael Blake
> >> [email protected]
> >>
> >>
> >>
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