How does crimping work?
in [Repair]
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From: tnom on 1 Dec 2009 22:22 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>, > >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. Who said bronze? Cite a reference!
From: F Murtz on 2 Dec 2009 04:00 Sylvia Else wrote: > 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. > The smaller of the two crimps is for the cable connection and the larger bit just crimps the lug insulation round the cable insulation.
From: Sylvia Else on 2 Dec 2009 04:04 F Murtz wrote: > Sylvia Else wrote: >> 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. >> > The smaller of the two crimps is for the cable connection and the larger > bit just crimps the lug insulation round the cable insulation. As I said, they are equal. Sylvia.
From: F Murtz on 2 Dec 2009 04:13 Sylvia Else wrote: > F Murtz wrote: >> Sylvia Else wrote: >>> 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. >>> >> The smaller of the two crimps is for the cable connection and the >> larger bit just crimps the lug insulation round the cable insulation. > > As I said, they are equal. > > Sylvia. Have a closer look, there is not much difference. Yours may be equal mine is not. In any case the right side or the flat side is for the cable connection and the left for the insulation. They may have changed the design as I noticed my crimper does not work as well with the newer lugs that seem to have different insulation.
From: F Murtz on 2 Dec 2009 04:17
F Murtz wrote: > Sylvia Else wrote: >> F Murtz wrote: >>> Sylvia Else wrote: >>>> 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. >>>> >>> The smaller of the two crimps is for the cable connection and the >>> larger bit just crimps the lug insulation round the cable insulation. >> >> As I said, they are equal. >> >> Sylvia. > Have a closer look, there is not much difference. Yours may be equal > mine is not. In any case the right side or the flat side is for the > cable connection and the left for the insulation. > They may have changed the design as I noticed my crimper does not work > as well with the newer lugs that seem to have different insulation. By right side I mean the opposite side than that shown on your crimper |