How does crimping work?
in [Repair]
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From: Dave Plowman (News) on 1 Dec 2009 10:01 In article <jq8ah5t73r391tcsm4ohmk8tv61u7e4dqv(a)4ax.com>, PeterD <peter2(a)hipson.net> wrote: > >> >Try cutting one open. > > > >> That tells you nothing about the metal... Again, cite a reference. > > > >Do you know the colour of copper? > OK, so clearly you don't have a clue, no evidence or facts to base > your lame assertion on, so... I know what copper looks like. Clearly, you don't. -- *How do they get the deer to cross at that yellow road sign? Dave Plowman dave(a)davenoise.co.uk London SW To e-mail, change noise into sound.
From: Dave Plowman (News) on 1 Dec 2009 10:03 In article <5s8ah5hnh5ivj5d62cbjjrolqggu3h7tj9(a)4ax.com>, PeterD <peter2(a)hipson.net> wrote: > >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. So we can add bronze to brass as metals you can't tell the difference from copper? -- *A fool and his money are soon partying * Dave Plowman dave(a)davenoise.co.uk London SW To e-mail, change noise into sound.
From: Sylvia Else on 1 Dec 2009 18:09 Dave Plowman (News) wrote: > 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. http://www.jaycar.com.au/productView.asp?ID=PT4525 The particular application is connecting to the terminals of an SLA, so these connectors have the advantage of minimising the scope for extraneous contact when they're in place. Shame they perform so badly on the pull test. Sylvia.
From: Dave Plowman (News) on 1 Dec 2009 19:24 In article <0073ddf9$0$8184$c3e8da3(a)news.astraweb.com>, Sylvia Else <sylvia(a)not.at.this.address> wrote: > > 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. > http://www.jaycar.com.au/productView.asp?ID=PT4525 > The particular application is connecting to the terminals of an SLA, so > these connectors have the advantage of minimising the scope for > extraneous contact when they're in place. > Shame they perform so badly on the pull test. I too have seen these red terminals pull off a cable within their stated range. I prefer non insulated 1/4 in spade connectors that have a separate insulating cover. They have a better cable clamp too. This sort:- http://www.vehicle-wiring-products.eu/VWP-onlinestore/terminalsnonins/noninsblades.php Made of brass, strangely. ;-) -- *What are the pink bits in my tyres? Cyclists & Joggers* Dave Plowman dave(a)davenoise.co.uk London SW To e-mail, change noise into sound.
From: Sylvia Else on 1 Dec 2009 21:28
Dave Plowman (News) wrote: > In article <0073ddf9$0$8184$c3e8da3(a)news.astraweb.com>, > Sylvia Else <sylvia(a)not.at.this.address> wrote: >>> 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. > >> http://www.jaycar.com.au/productView.asp?ID=PT4525 > >> The particular application is connecting to the terminals of an SLA, so >> these connectors have the advantage of minimising the scope for >> extraneous contact when they're in place. > >> Shame they perform so badly on the pull test. > > I too have seen these red terminals pull off a cable within their stated > range. > > I prefer non insulated 1/4 in spade connectors that have a separate > insulating cover. They have a better cable clamp too. This sort:- > > http://www.vehicle-wiring-products.eu/VWP-onlinestore/terminalsnonins/noninsblades.php > > Made of brass, strangely. ;-) > I've noticed what is probably a significant difference between the failed lugs, and the other type that seem OK. It lies in the length of the metal that gets crimped. The tool I'm using is one of these: http://www.dse.com.au/cgi-bin/dse.storefront/4b15ceb90184983c273fc0a87e0106a4/Product/View/T3535 It seems designed to crimp equally* two locations spaced apart. But the metal on the failed lugs is too short, and one side of the tool is just crimping plastic. [*] I emphasis "equally". Lest anyone think I've misunderstood, this is not a tool designed to crimp the conductor and insulator in one go. Sylvia. |