I run a calibration lab. We use go-no go gauges to test crimpers. The allowed tolerance for the gauges are three-ten thousands of an inch... yes good crimpers are an accurate instrument... and they should only be used with lugs/wire sizes specified for them
Sent from my Verizon Wireless 4G LTE DROID Walter Underwood <wun...@wunderwood.org> wrote: >I agree. The point of a good crimper is to get a controlled force on the joint >to create a reliable mechanical-electrical joint. Putting something springy in >there, like insulation, is asking for trouble. > >wunder >K6WRU > >On Dec 11, 2013, at 3:48 PM, bill conkling <n...@widomaker.com> wrote: > >> Crimping the wire over the insulation doesn't seem too good to me. >> >> I have used a dab of hot melt glue to stabilize the wire at the rear of the >> PP Plastic. >> >> ...bill nr4c >> >> Sent from my Verizon Wireless 4G LTE DROID >> >> EricJ <eric_c...@hotmail.com> wrote: >> >>> I don't usually do that because the wire exiting the APP barrel is still >>> just a small strand that flexes easily and can eventually break. It >>> gives you a lot more surface area for crimping, but needs strain relief >>> to be secure in the long run. >>> >>> What I do is strip the wire the same length as normal, then fold it back >>> over the insulation. I insert the wire and insulation into the barrel >>> with the wire down (away from the split in the barrel), then crimp >>> normally. This makes a solid electrical connection with the stiffness of >>> the wire insulation which also provides more than adequate strain relief. >>> >>> I've mentioned it here before and some are aghast, but I have maybe a >>> dozen connections like that currently in my shack and not one of them >>> has ever failed in the 10 years I've been doing it with APPs. But any >>> connection where this is necessary is a low voltage, low current DC >>> connection so what's it going to hurt? It isn't any worse electrically >>> than using a small wire nut which is considered safe enough even for >>> house wiring. >>> >>> Eric >>> KE6US >>> >>> >>> >>> On 12/11/2013 9:41 AM, Edward R Cole wrote: >>>> A little off topic: >>>> >>>> I wonder if any of you do what I do when using wires are too small for >>>> crimp connectors? I strip twice as much insulation from the end of >>>> the wire and then fold the bare wire over double. May have to squeeze >>>> using small nose pliers to get it doubled tight enough to fit inside >>>> the crimp connector. The crimps hold the undersized wire very well >>>> with this procedure. >>>> >>>> BTW this works for solid conductor wire, like hookup wire. Bend the >>>> conductor double and there is something for the crimp to hold. >>>> >>>> I do not know if this will work with powerpole connectors. My problem >>>> was having too large diameter wire for the powerpole connectors which >>>> inhibited proper crimping; solution chose proper size connector for >>>> the wire size selected. >>>> >>>> 73, Ed - KL7UW >>>> >>>> --------------------- >>>> Date: Wed, 11 Dec 2013 09:00:11 -0500 >>>> From: Don Wilhelm <w3...@embarqmail.com> >>>> To: "Charlie T, K3ICH" <pin...@erols.com>, elecraft@mailman.qth.net >>>> Subject: Re: [Elecraft] K3 Powerpole Replacement >>>> Message-ID: <52a86feb.2070...@embarqmail.com> >>>> Content-Type: text/plain; charset=ISO-8859-1; format=flowed >>>> >>>> Charlie, >>>> >>>> The PowerWerx crimper is good. Just be certain to fill the cavity with >>>> wire - for instance the 30 amp connectors are sized for #12 wire - if >>>> the wire is smaller, it may be loose, so in addition to filling the >>>> barrel with as many wire strands as I can, I add some solder for extra >>>> security. >>>> >>>> 73, >>>> Don W3FPR >>>> >>>> >>>> >>>> 73, Ed - KL7UW >>>> http://www.kl7uw.com >>>> dubus...@gmail.com >>>> "Kits made by KL7UW" >>>> ______________________________________________________________ >>>> Elecraft mailing list >>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>>> Help: http://mailman.qth.net/mmfaq.htm >>>> Post: mailto:Elecraft@mailman.qth.net >>>> >>>> This list hosted by: http://www.qsl.net >>>> Please help support this email list: http://www.qsl.net/donate.html >>>> >>>> >>> >>> ______________________________________________________________ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:Elecraft@mailman.qth.net >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >>> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html > >-- >Walter Underwood >wun...@wunderwood.org > > > >______________________________________________________________ >Elecraft mailing list >Home: http://mailman.qth.net/mailman/listinfo/elecraft >Help: http://mailman.qth.net/mmfaq.htm >Post: mailto:Elecraft@mailman.qth.net > >This list hosted by: http://www.qsl.net >Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
