Thanks Jim. I will give you my best answer as it related to our Bell System/Bell Telephone Labs tests done prior to our total conversation to crimped and wire wrapped connections.
1. No, soldering doe not create a molecular connection but is (memory suffers here) an amalgam which changes over time as components of the solder leech out. When new the soldered connection has a very slightly higher resistance than the properly crimped connection. 2. Not sure as we did not attempt to remedy a known problem when it could be avoided with no negative results. I suspect the answer is no as the contaminates within the soldered connection will continue to leech out over time. 5 The properly crimped connect has the lowest and most stable resistance over time. Thanks for your interest Jim. Michael Blake K9JRI > On Nov 5, 2015, at 10:34 AM, jim <[email protected]> wrote: > > Questions: > > 1. Does soldering make a molecular, gas tight connection? > 2. Cant you clean the soldered connection with a solution that is a base to > neutralize the acid. > 3. It does stiffen the wire > 4. Same as three. > 5. Which method has the lowest resistance, measuring with a short piece or > wire length to have the connector system dominate the measurement? > > Jim > W6AIM > > > > > > -----Original Message----- > From: Elecraft [mailto:[email protected]] On Behalf Of > Michael Blake > Sent: Thursday, November 5, 2015 7:19 AM > To: Elecraft Reflector > Subject: [Elecraft] Soldering crimped connectors is not a good thing. > > 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] > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html Message > delivered to [email protected] > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
