Arild Jensen (elnav@uniserve.com) wrote:
Soldering can cause damage to insulation and if it wicks beyond the barrel
will create a hard
point which will fail if there is any vibration or repeated flexing.
This is why mil spec connectors now requires crimping instead of
soldering. > They learned the
hard way that soldered connections eventually have a nearly 100% failure
rate.
Agree completely. I can tell you that on a military aircraft, the only
place you will find solder is where the joint is completely restrained from
movement, such as a wave-soldered printed circuit card. Corrosion in a dry
joint may be evil, but fatigue cracks in solder joints are more so.
Jim Bohn
M/V Margaret Ann
1974 Trojan 44
>Arild Jensen (elnav@uniserve.com) wrote:
>
> Soldering can cause damage to insulation and if it wicks beyond the barrel
> will create a hard
> point which will fail if there is any vibration or repeated flexing.
> This is why mil spec connectors now requires crimping instead of
soldering. > They learned the
> hard way that soldered connections eventually have a nearly 100% failure
> rate.
Agree completely. I can tell you that on a military aircraft, the only
place you will find solder is where the joint is completely restrained from
movement, such as a wave-soldered printed circuit card. Corrosion in a dry
joint may be evil, but fatigue cracks in solder joints are more so.
Jim Bohn
M/V Margaret Ann
1974 Trojan 44