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HelicopterMain Discussion › $130 Molex Crimper Results
06-05-2017 06:14 PM  20 days agoPost 1
Four Stroker

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Atlanta

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There is a lot of chatter recently about buying used crimpers for RC connectors. These are hit or miss. If you can find one they offer great crimps. As an alternative, the Molex 64016-0201 Service Grade crimper is $130 new and includes the pin holder. The crimps are consistent and have about 4~5 milliohms resistance as measured by running 3 Amps through the wire and measuring the voltage drop or 12~15 millivolts. The outer surface of the crimps appears barfed up but this of course does not affect the mission. They pass the 8.8 pound force pull test specification of Molex for this pin and the wire breaks before the crimp let's go.

The above are Molex 0016020087 cheap pins for 22~24 AWG wire and some junk HD servo wire. This is the minimum crimper that I would use for anything that I would fly. Digikey has all of this stuff as would any other dealer of Molex. There are male and female pins and shells. Not keyed for JR or Futaba.

2.2 mm - wire crimp
1.2 mm - insulation crimp
4.2 mm - total crimp area including space between crimps.

May work for other aftermarket pins.

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06-05-2017 06:40 PM  20 days agoPost 2
chopper37

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FL350

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Good info there thanks for the research results to

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06-05-2017 08:05 PM  20 days agoPost 3
co_rotorhead

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Centennial, CO, USA

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Or, for the rest of us 99%'ers:

https://www.servocity.com/pin-crimpers

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06-05-2017 08:33 PM  19 days agoPost 4
chopper37

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FL350

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Or, for the rest of us 99%'ers:

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06-06-2017 01:09 AM  19 days agoPost 5
Doublah

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USA

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I have a older Berg that I absolutely love. Does either 22-26 or 28-32.

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06-06-2017 01:58 AM  19 days agoPost 6
Ace Dude

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USA

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Looks great Frour Stroker, thanks for sharing. Here are the results from my testing using the other Molex contacts and 22AWG wire.

  

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06-06-2017 02:45 PM  19 days agoPost 7
Heli_Splatter

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Silver Spring, MD by way of Sidney, Ne - USA

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You are going to have to make a lot of connections to pay for a $130 crimper. Thanks, but I will keep on crimping with my cheepos. I have never had a failure.

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06-06-2017 03:52 PM  19 days agoPost 8
EEngineer

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TX

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Looks good....

Logo 600SXs, 700XX, 800XX

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06-06-2017 04:14 PM  19 days agoPost 9
Heli_Splatter

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Silver Spring, MD by way of Sidney, Ne - USA

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My connector crimpers from Hansen Hobbies have worked rather nicely for 10+ years. They are rather nice and do a great job. I have in fact two crimpers, but these from Hansen work better. I get a professional job at a reasonable price.

I really think the results rely more on the person operating the tool than the tool itself.

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06-06-2017 04:23 PM  19 days agoPost 10
EEngineer

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TX

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A good crimping tool is essential for making proper crimps....as FourStroker and AceDude have mentioned and demonstrated....

And their points are very well taken, imo....

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06-06-2017 06:09 PM  19 days agoPost 11
Four Stroker

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Atlanta

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This crimper does not work:

The reason should be obvious. Can anyone guess where I got this crimper? Hint: It was called Deluxe Crimping Tool and costs $39.95.

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06-06-2017 06:26 PM  19 days agoPost 12
gmcullan

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Southbridge, MA

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Radio Crap, er, I mean Shack. I win!

Gerry Cullan,
Gaui 200, 255; T-Rex 250, 450 SE & SA, Mini-Titan, Blade 450

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06-06-2017 08:04 PM  19 days agoPost 13
pH7

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Sterling Heights, MI - USA

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I thought it was Radio Shaft, but maybe you are right.

Phil Heavin

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06-06-2017 08:10 PM  18 days agoPost 14
EEngineer

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TX

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Didn't Radio Shack close their stores?

I thought I read that.

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06-06-2017 08:45 PM  18 days agoPost 15
gmcullan

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Southbridge, MA

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Some are still open, but they have to be on their last gasp.

Gerry Cullan,
Gaui 200, 255; T-Rex 250, 450 SE & SA, Mini-Titan, Blade 450

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06-07-2017 03:15 PM  18 days agoPost 16
Four Stroker

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Atlanta

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Ace Dude's female pins are Molex 71851 series. I would recommend them rather than the 70058 series that I used. The 71851 are high contact force and probably better for our application.

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06-07-2017 03:20 PM  18 days agoPost 17
EEngineer

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TX

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"The reason should be obvious."

You get what you pay for.....and cheap results, too....

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06-07-2017 03:39 PM  18 days agoPost 18
co_rotorhead

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Centennial, CO, USA

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Maybe if it was my profession, but as a hobbyist I have a hard time justifying $130 for a tool that I might use for 45 minutes once a year.

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06-07-2017 04:10 PM  18 days agoPost 19
EEngineer

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TX

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On the other hand.....

We spend quite a lot of money on our helis.....much more than $130....per heli....perhaps 10x that or even more in some cases.

Not to mention the time involved in properly setting up a heli.

The proper operation of the electronics in these helis is "mission critical"....imo

I've seen cases....my cases()....where I've fubarred a crimp....using a crappy crimper.

Such as the stranded wires hanging by just a few threads or so.

Which leads to poor electrical connectivity....which can lead to the demise of the heli at worst....or to a variety of "weird" issues at best.

Especially in an environment of high vibrations and such things.

So, I consider the expense of a quality tool minimal to the expense of frustrations from weird issues....or worse....the demise of the heli.

Logo 600SXs, 700XX, 800XX

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06-07-2017 04:57 PM  18 days agoPost 20
Four Stroker

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Atlanta

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People keep asking me if this crimper will do aftermarket pins and shells made for the hobby. The crimper, pins, shells all go together mechanically and electrically.

BUT it will probably work. There are two crimp slots A and B that can be used depending on pin and wire AWG. As in the very first post, the wire crimp is 2.2mm. Any more than that will not be crimped. On the other hand there is plenty of die for the insulation crimp up to about 6 mm.

Here are some Hansen pins. Note the female wire crimp is not all the way:

The aftermarket pins are very thin and brittle.

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