[Elecraft] Soldering crimped connectors is not a good thing.

[ae4pb at carolinaheli.com]

Is the connection intermittent at the contact point or at the crimp?
If your crimps fail over time there's an issue with the crimp or there's
extreme physical stress that's causing the crimp to fail.

Part of my background is Military Avionics. Our connections are constantly
subject to vibration, changing temperature, and changing humidity. I've
never seen a proper crimp fail. I've replaced crimps after the pins were
broken from improper mating or such. In the environment I came from it was
common to re-work soldered connectors due to conductor breakage over time
(consider the platform I flew on was from the 1960s). 

Validate the connectors are rated for the wire gauge/type please. 



Jerry Moore
CDXA, INDEXA, SKCC, Fists
AE4PB, K3S - S.N. 010324
http://www.qrz.com/db/AE4PB
An Amateur is - Considerate, Loyal, Progressive, Friendly, Balanced, and
Patriotic.

-----Original Message-----
From: Elecraft [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of
lmarion
Sent: Thursday, November 05, 2015 11:05 AM
To: elecraft at mailman.qth.net
Subject: Re: [Elecraft] Soldering crimped connectors is not a good thing.


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: elecraft at mailman.qth.net
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
> k9jri at outlook.com
>
>
>
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