If you examine the damage closely, you will see that the heating is not in the wire proper (no melted insulation) and not in the bolted connection (no discoloration in the bolt or plastic insulator block), it's in the crimp. The discoloration in the ring terminal starts at the terminal crimp where things are melted and fades away towards the bolt.WarIsOver said:...how can it be that the yellow wire hasn't gotten any damage?
You're right, but I can't see that in the tiny thumbnail (even if I enlarge it locally) that shows up in the OP's post. If the link in it is supposed to go to a larger image, it doesn't for me (just a blank page with various script errors).teklektik said:If you examine the damage closely, you will see that the heating is not in the wire proper (no melted insulation) and not in the bolted connection (no discoloration in the bolt or plastic insulator block), it's in the crimp. The discoloration in the ring terminal starts at the terminal crimp where things are melted and fades away towards the bolt.
e-beach said:I don't know why people relay on crimps anyway. It is such a spotty connection style. Solder it! Even if it is crimped I solder it to make sure.
liveforphysics said:e-beach said:I don't know why people relay on crimps anyway. It is such a spotty connection style. Solder it! Even if it is crimped I solder it to make sure.
Solder conducts like crap in your joints making hot spots that if stressed melt and flow places they can short out on things.
Solder in the wire strands means broken wires if you bend them a few times.
Soldered joints can not match the electrical impedance of a proper cold-forged crimp joint, nor the mechanical strength (because the solder itself is low tensile strength, and when wicked into strands creates stress riser failure points.)
Solder is a mega-fail for performance EVs, but is better than most of the garbage insulated crimp connectors and crimpers you can buy at a hardware store. Any useful crimp joint will be non-insulated, and require a real crimper to cold-forge.
999zip999 said:So crimp and solder is worse then just my crimper ? I do not have a hydraulic crimper.
999zip999 said:So crimp and solder is worse then just my crimper ? I do not have a hydraulic crimper.