How does crimping work?
in [Repair]
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From: Dave Plowman (News) on 30 Nov 2009 13:28 In article <fh38h5931qpafh0rdpom1qpa9n3bn2epvp(a)4ax.com>, PeterD <peter2(a)hipson.net> wrote: > >But most of the crimped terminals you come across - like say in a car or > >computer - are brass, but sometimes plated. > Cite a reference. Try cutting one open. -- *How do you tell when you run out of invisible ink? * Dave Plowman dave(a)davenoise.co.uk London SW To e-mail, change noise into sound.
From: Trevor Wilson on 30 Nov 2009 14:42 "Dave Plowman (News)" <dave(a)davenoise.co.uk> wrote in message news:50c25cfc1fdave(a)davenoise.co.uk... > In article <4b13c243$1(a)dnews.tpgi.com.au>, > F Murtz <haggisz(a)hotmail.com> wrote: >> Usually the conductor is the same metal as the lug, it will have the >> same memory so if it is all squished it should stay there.Expanding and >> contracting in use at the same rate. (maybe) > > Most connectors are brass - to give more strength. Cable usually copper. **Only cheap, crappy crimps are brass. For copper wire, crimps should be copper. -- Trevor Wilson www.rageaudio.com.au
From: Trevor Wilson on 30 Nov 2009 14:43 "Sylvia Else" <sylvia(a)not.at.this.address> wrote in message news:00b33d3e$0$12335$c3e8da3(a)news.astraweb.com... > The obvious answer is that you bend the metal of the connector so that it > holds the wire in place. > > This doesn't seem very satisfactory. Metal always retains some > flexibility, even when bent beyond its yield point. No matter how hard you > squeeze, there'll be some rebound when you release the pressure, which > should result in a loose joint. > > After having had a bad experience trying to crip a lug some years ago, I > recently faced the need to do this again. So I bought a moderately > expensive ratchet based crimping tool. And, rather to my surprise, it > actually works. > > But that doesn't answer the question of how. **A properly sized crimp (to the wire size), used with a quality crimp tool, used correctly, will ensure an excellent, gas tight connection. Better, in fact, than a soldered joint. -- Trevor Wilson www.rageaudio.com.au
From: Dave Plowman (News) on 30 Nov 2009 18:26 In article <7nili3F3mc6v2U1(a)mid.individual.net>, Trevor Wilson <trevor(a)SPAMBLOCKrageaudio.com.au> wrote: > > Most connectors are brass - to give more strength. Cable usually > > copper. > **Only cheap, crappy crimps are brass. For copper wire, crimps should be > copper. Depends on the use. I'd say the most common crimp terminals are in some form of spring loaded contact. And those tend to be made of brass because it is stronger than copper, so gives a better contact. -- *How do you tell when you run out of invisible ink? * Dave Plowman dave(a)davenoise.co.uk London SW To e-mail, change noise into sound.
From: Trevor Wilson on 30 Nov 2009 18:43
Dave Plowman (News) wrote: > In article <7nili3F3mc6v2U1(a)mid.individual.net>, > Trevor Wilson <trevor(a)SPAMBLOCKrageaudio.com.au> wrote: >>> Most connectors are brass - to give more strength. Cable usually >>> copper. > >> **Only cheap, crappy crimps are brass. For copper wire, crimps >> should be copper. > > Depends on the use. I'd say the most common crimp terminals are in > some form of spring loaded contact. **We're discussing CRIMP terminals. Like this: http://www.ami.ac.uk/courses/topics/0119_crmp/index.html Copper is the material, not brass. -- Trevor Wilson www.rageaudio.com.au |