How does crimping work?
in [Repair]
|
From: PeterD on 1 Dec 2009 09:11 On Tue, 1 Dec 2009 21:13:21 +0900, "Michael Kennedy" <mike(a)nospam.com> wrote: > >"Dave Plowman (News)" <dave(a)davenoise.co.uk> wrote in message >news:50c291ea81dave(a)davenoise.co.uk... >> In article <d3n8h59kal7te33ioo1jkvrnetlcfjtqd1(a)4ax.com>, >> PeterD <peter2(a)hipson.net> wrote: >>> >> Cite a reference. >>> > >>> >Try cutting one open. >> >>> That tells you nothing about the metal... Again, cite a reference. >> >> Do you know the colour of copper? >> >> -- >> *Forget the Joneses, I keep us up with the Simpsons. >> >> Dave Plowman dave(a)davenoise.co.uk London SW >> To e-mail, change noise into sound. > > >Good grief... Cite a reference.. I've asked several times, and he's avoided doing so. Mainly because he's off on cloud nine, with no idea what he's talking about. I suspect everyone else knows that bronze is much too brittle to use as a crimp on connector, but Dave hasn't gotten that far yet. >How is a reference better than actually >having the item in hand. I say the reference is any piece of equipment that >has crimps in it. Anyhow.. Someone happened to cite the needed info.. >
From: F Murtz on 1 Dec 2009 09:31 PeterD wrote: > On Tue, 1 Dec 2009 21:13:21 +0900, "Michael Kennedy"<mike(a)nospam.com> > wrote: > >> >> "Dave Plowman (News)"<dave(a)davenoise.co.uk> wrote in message >> news:50c291ea81dave(a)davenoise.co.uk... >>> In article<d3n8h59kal7te33ioo1jkvrnetlcfjtqd1(a)4ax.com>, >>> PeterD<peter2(a)hipson.net> wrote: >>>>>> Cite a reference. >>>>> >>>>> Try cutting one open. >>> >>>> That tells you nothing about the metal... Again, cite a reference. >>> >>> Do you know the colour of copper? >>> >>> -- >>> *Forget the Joneses, I keep us up with the Simpsons. >>> >>> Dave Plowman dave(a)davenoise.co.uk London SW >>> To e-mail, change noise into sound. >> >> >> Good grief... Cite a reference.. > > I've asked several times, and he's avoided doing so. Mainly because > he's off on cloud nine, with no idea what he's talking about. > > I suspect everyone else knows that bronze is much too brittle to use > as a crimp on connector, but Dave hasn't gotten that far yet. > >> How is a reference better than actually >> having the item in hand. I say the reference is any piece of equipment that >> has crimps in it. Anyhow.. Someone happened to cite the needed info.. >> It is possible that some spade connectors are made out of phosphor bronze (especially the ones used in heating devices like stove elements) but the discussion was about crimp lugs
From: Dave Plowman (News) on 1 Dec 2009 06:20 In article <4b14f559$1(a)dnews.tpgi.com.au>, F Murtz <haggisz(a)hotmail.com> wrote: > Dave Plowman (News) wrote: > > In article > > <b06cb5a9-8c0d-4d8e-a980-5ddef60712af(a)p19g2000vbq.googlegroups.com>, > > whit3rd<whit3rd(a)gmail.com> wrote: > >>> 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 > > > >> Phosphor bronze or beryllium copper are the springy metals in common > >> use (it may LOOK like brass...). > > > > Could well be - I've not had it analyzed. But it certainly doesn't > > look like copper. ;-) Of course it could be all these sort of things > > are copper in the US. I can only speak for the ones I'm familiar with > > in the UK. > > > Spade connectors have to have different properties to lugs because they > rely on spring tension for electrical continuity but proper bolt on lugs > are usually copper for copper cables, aluminium for aluminium cables. Yes - I did ask if 'lug' had a special meaning in this context. > http://www.zeetaelectricals.com/ I just sort of assumed the discussion was more about electronic terminals than heavy duty power distribution. Hence my reference to computers, etc. -- *I'm already visualizing the duct tape over your mouth Dave Plowman dave(a)davenoise.co.uk London SW To e-mail, change noise into sound.
From: Rich Webb on 1 Dec 2009 10:01 On Tue, 01 Dec 2009 09:11:01 -0500, PeterD <peter2(a)hipson.net> wrote: >On Tue, 1 Dec 2009 21:13:21 +0900, "Michael Kennedy" <mike(a)nospam.com> >wrote: > >> >>"Dave Plowman (News)" <dave(a)davenoise.co.uk> wrote in message >>news:50c291ea81dave(a)davenoise.co.uk... >>> In article <d3n8h59kal7te33ioo1jkvrnetlcfjtqd1(a)4ax.com>, >>> PeterD <peter2(a)hipson.net> wrote: >>>> >> Cite a reference. >>>> > >>>> >Try cutting one open. >>> >>>> That tells you nothing about the metal... Again, cite a reference. >>> >>> Do you know the colour of copper? >>> >>> -- >>> *Forget the Joneses, I keep us up with the Simpsons. >>> >>> Dave Plowman dave(a)davenoise.co.uk London SW >>> To e-mail, change noise into sound. >> >> >>Good grief... Cite a reference.. > >I've asked several times, and he's avoided doing so. Mainly because >he's off on cloud nine, with no idea what he's talking about. > >I suspect everyone else knows that bronze is much too brittle to use >as a crimp on connector, but Dave hasn't gotten that far yet. Somebody probably ought to let the manufacturers know about that! <http://documents.tycoelectronics.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=1775442&DocType=CD&DocLang=EN> <http://www.hirose.co.jp/cataloge_hp/e54300012.pdf> <http://www.molex.com/pdm_docs/sd/503948100_sd.pdf> .... and lots of others, of course. -- Rich Webb Norfolk, VA
From: Dave Plowman (News) on 1 Dec 2009 10:00
In article <0090e117$0$23709$c3e8da3(a)news.astraweb.com>, Sylvia Else <sylvia(a)not.at.this.address> wrote: > BTW, I'm seeing huge variation between lug types (same colour - > different brand). I bought some fully insulated ones - and could pull > them all off with no difficulty. The ones I had in my stock from way > back either failed by tearing the conductor - or had a strength > exceeding mine, and didn't fail. If by fully insulated you mean the red blue and yellow types available in a variety of configurations - the colour determining the cable sizes catered for - they vary wildly in quality by maker, as do the crimp tools. Some seem to be made out of 'silver' foil. But even with the best, it's interesting to cut off the insulation after crimping and examine the quality of the crimp, especially at the bottom end of the range catered for. To me, the only really satisfactory crimp is the type that forms a heart shaped cross section after crimping - and those don't. > At least there was some consistency - lugs out of the same box performed > the same as each other. > The crimping tool has a 'pressure' setting, but comes with no guidance > on how to decide which pressure to use. -- *Ah, I see the f**k-up fairy has visited us again Dave Plowman dave(a)davenoise.co.uk London SW To e-mail, change noise into sound. |