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[parent] [thread] 3 comments
1. SlickN+(OP)[view] [source] 2023-11-27 22:35:47
Soldering crimp connectors (that are not otherwise designed for it) will reduce the flexibility of the wire and introduce stress concentrations. Those stress concentrations will reduce the fatigue life of the harness.
replies(2): >>Walter+8c >>milesv+0M2
2. Walter+8c[view] [source] 2023-11-27 23:42:55
>>SlickN+(OP)
As I mentioned, the wire needs to be properly supported, then there won't be any stress risers. I've never had one crack and fail on me.
replies(1): >>SlickN+tk
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3. SlickN+tk[view] [source] [discussion] 2023-11-28 00:34:32
>>Walter+8c
> I've never had one crack and fail on me.

Well, I can't argue with that.

4. milesv+0M2[view] [source] 2023-11-28 19:30:42
>>SlickN+(OP)
I've been under the impression that soldering crimped connections was a general no-no as well, since it doesn't actually help a good crimp with cold welds, and does make any stranded wire more likely to break where the solder stops.

I've studied this a little since it effects my work, but I don't claim to be an EE. Sadly, I'm not finding any definitive authorities on the subject with a quick googling, though all the top hits tend to agree with the sentiment of not soldering crimped connections.

This was a short article that I ran across, dealing with the topic. As usual, the comments on hackaday are all over the place, but I still find them useful.

https://hackaday.com/2017/02/09/good-in-a-pinch-the-physics-...

Interestingly, I thought nasa banned soldering crimped connections, but as far as I can tell, rereading this doc now with a quick skim for the string crimp, they only ban crimping tinned connections.

https://s3vi.ndc.nasa.gov/ssri-kb/static/resources/nasa-std-...

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