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crimping servo leads

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Old 12-06-2018, 09:09 PM
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aerocub
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Default crimping servo leads

I guess this is the forum for this question. I purchased an Iwiss crimper model number SN28-B for crimping DuPont connectors. Be honest now, does anyone use the crimper successfully? I have watched videos, tried every combination of orientation, crimper position etc and am not having any luck at all. Is there someone who can help explain how to use the crimper? Thanks
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Old 12-09-2018, 06:56 PM
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I can't speak for the Iwiss crimper in particular as I have a cheaper one. I can tell you that it takes practice and in a given sitting I screw up about 20% of my crimps anyway. I don't know what youve learned so far, but maybe this can help:
a) Try to strip your wire as accurately as possible. If you leave too much conductor showing, it will end up not allowing the male pin to insert deeply enough when you put your connectors together.
b) Determine which way the pin goes into the crimper. The conductor half crimps smaller than the insulation half and you can see the size difference when the crimper is fully squeezed.
c) Place the wire into the strippers notch first, lining up the end of the insulation at the demarcation point between the insulation and conductor crimps. Hold the open crimper with wire aligned in place in your left hand.
d) With your right hand, place the pin into the crimper notch sideways, open side first. Orient it as determined in step b. Of course, the crimpable sections have to be roughly within the confines of the notch. The pin should stay in place by friction and compression forces on it from the notch.
e) Use your right hand to squeeze the crimper handles together completing the task. While doing so, maintain your control of the wire location in the notch with your left hand.

Well, that's how I do it, anyhow. Good luck and let us know how it goes.

-Ron
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Old 12-10-2018, 02:15 PM
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I can't speak for that crimper but I have used similar ones that worked very well once you learn the technique. Not all crimp connectors and tools are created equal and some connector / tool combinations just won't work well. What goes wrong with your connections? Do the tabs fail to fold over evenly or not at all? Does this crimper do the connection and insulation at the same time? I have had best luck with tools that do the two stages of the crimp separately. I use to do these connections a lot in my work and went through quite a few tools before I found one that I really liked ..... and it was the cheapest one I found at the time. Some years ago though so any model or brand info would be out of date.
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