[Elecraft] 45A APP Crimper

[Rich]

The referenced article indicates the reason for not soldering lugs onto a
wire – the heat from soldering can heat harden the wire and cause it to
fail.  Unless the wire is securely fastened to the same object that the
termination is made, there will be flexure of the wire. While doing seismic
testing of cabinets (with very low and sub sonic frequency shaking) you
could see (with the aid of a strobe-light, highs-peed film and/or other
equipment) the movement and flexure of the wire. Even with less than 2
inches of separation! The heat treating hastens the failure. 
All of the above assumes you are using the proper lug/die/crimper and it is
CALIBRATED to the setting you need. Using your big-box auto store
crimper/lug you are on your own. But since we were talking about using the
proper APP crimper I thought I would through in my two-cents about soldering
the connection after proper crimping.
However the main thrust of my first post was “Why use butt connections to
reduce the size (increase the gauge number) when all you need do is remove a
few strands.” The extra connections make extra failure points and it’s going
to a connector that has a lower amp rating anyway.

Rich,
KE0X

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