You may wish to read this then:531colin wrote: ↑18 Oct 2021, 12:17pm One vote for white elephant.
Just solder the connections....its a longer lasting job than crimping, which obviously stresses the wire as you crimp.....solder splints the wire by joining the strands together.
For insulation, use heat shrink sleeving https://www.ebay.co.uk/itm/303927706138 ... d51faba4ea...loads of suppliers.
This also re-inforces the "join" ....its the join which is weak with a crimp, they fatigue where the conductor isn't properly supported between the cut end of the insulation and the crimp.
If you think bicycles are a demanding application, try motorbikes.
Brake/gear wires......I use silver solder to make a proper finished end.
https://www.hpacademy.com/technical-art ... -crimping/
I would add a caveat regarding crimping: it has to be done correctly. I used to do production testing where I'd gently tug wires on their crimp connectors. I also had to re-solder 100s of joints due to dry, missing or too much being used. The problem with many crimp tools is getting enough leverage.
I have no experience of motorbikes but I totally agree that cycles can be demanding enough. I can remember as a kid having to bash my Ever-ready front light regularly because the contacts had become corroded or lost their springiness.