Larry and Bill have hit the nails on the heads. For crimping, it's
important to achieve a gas-tight connection, by essentially cold-welding
enough Cu of the wire to the Cu or alloy of the crimp device. Too much
of the wrong other materials present, or insufficient crimping force,
may produce we
I've had the good luck to know a number of people that worked on industry
standards and have participated in some committees myself in the avionics
industry. You do indeed find out the why. The cynical among you may dispute
this, but most of the time the members really want to do the right thing,
a
Crimping machines and hand crimp tools all close the crimping dies to a
set position; that position on all bench machines and most hand crimp
tools is adjustable and is set to qualify the crimp. The cross-section
area of the conductor strand bundle is the dominant factor.
Optimally, the crimp
It is even more difficult. I bought some cables from a company because I
did not have a crimper for 4/0. I was not impressed. My crimps were much
better.
I don't have a specific recommendation, but you should get a feel from them
that they understand the standards. Places that do work for aviation
kb...@n1k.org said:
> On the typical West Mountain setup, the cable that goes from the power supply
> into the device tends to stay in place a *long* time. The other stuff gets
> moved around allot. Indeed my preference is for the ânewerâ designs that
> donât bring power in on a Power Pole
On 10/6/19 4:25 AM, Poul-Henning Kamp wrote:
In message <6e619156-4cc4-f343-7a37-6c2f98b0e...@earthlink.net>, jimlux writes:
For a Class D mission, there is a formal process (at JPL, anyway) where
you go through the roughly 700 "Design Principles" and "Flight Project
Practices" [...]
On 10/5/19 8:16 PM, Larry McDavid wrote:
I've used Power-Pole connectors for many years successfully and I've
always crimped them with appropriate Power-Pole crimp tools. I never,
never solder crimped connections! Heating a crimped connection to
soldering temperature will relax the crimp force
On 10/5/19 7:11 PM, Mark Goldberg wrote:
Building codes are published by the NFPA. They allow you to sign up and
view them online. You can't print them or save them, but at least you can
look things up and learn, even if you did not pay. I wish the IPC would do
the same.
what's even better
Hi
On the typical West Mountain setup, the cable that goes from the power supply
into
the device tends to stay in place a *long* time. The other stuff gets moved
around
allot. Indeed my preference is for the “newer” designs that don’t bring power
in on
a Power Pole.
Bob
> On Oct 5, 2019, at
On 10/5/19 5:37 PM, Scott McGrath wrote:
As to crimping tools it’s important to use the correct power pole tooling as
the alignment of the crimp is critical to contact insertion.
Ive found the West Mountain Radio tool to be good for the smaller powerpoles
I’ve got the Anderson crimper for the
On Sat, 5 Oct 2019 18:03:33 -0400, MLewis wrote:
Snip
>An engineer told me what was up, and I cut open some connections that
>seemed solid to check. In each case there was a gob of solder at the
>end, but only some trace solder within the first part of the strands,
>with minimal contact betw
In message <38b5000d-c878-4470-943c-089153b15...@alignedsolutions.com>, Mark
Spencer writes:
>The catalogue also lists retention clips [...]
I use those, they work fine.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD com
I've used Power-Pole connectors for many years successfully and I've
always crimped them with appropriate Power-Pole crimp tools. I never,
never solder crimped connections! Heating a crimped connection to
soldering temperature will relax the crimp force in the crimp zone and,
if properly crimpe
In message <6e619156-4cc4-f343-7a37-6c2f98b0e...@earthlink.net>, jimlux writes:
>For a Class D mission, there is a formal process (at JPL, anyway) where
>you go through the roughly 700 "Design Principles" and "Flight Project
>Practices" [...]
Are these available in a public document ?
On 5/10/19 8:17 AM, MLewis wrote:
With audio signals, a soldered crimp is one of the worst possible
connections. I wouldn't think it would be different for anything else,
but may go undetected until failure. If you've used the correct size
of crimp and used a proper crimping tool, then you've
For a connection that remains undisturbed for 20 to 30 years, could you get
by with no connector at all?
On Sat, Oct 5, 2019 at 6:03 PM Bob kb8tq wrote:
> Hi
>
> The biggest “issue” I’ve seen with Power Poles is that after being mated
> for 20 to 30
> years they start to loose the spring force
On 10/5/19 3:35 PM, Hal Murray wrote:
jim...@earthlink.net said:
There is *great* resistance to changing any assembly and workmanship
standard - nobody wants to be the person who says "we don't need to do
*that* anymore" and then a disaster happens, and one of the potential causes
is "you didn
As to crimping tools it’s important to use the correct power pole tooling as
the alignment of the crimp is critical to contact insertion.
Ive found the West Mountain Radio tool to be good for the smaller powerpoles
I’ve got the Anderson crimper for the 75 amp powerpoles.
Anything larger - i
On Sat, Oct 5, 2019 at 6:03 PM Hal Murray wrote:
>
> Do the people who maintain the rules occasionally look around to see if a
> better way has been developed?
>
IPC, the Association Connecting Electronics Industries publishes a large
variety of standards that describe how to assemble electronic
As the moderators seem ok with this topic.
I suspect my prior experience with power poles would have been better if I had
been able to obtain some of the products contained in the Anderson Power
Products catalogue (ie. 45 amp contacts designed for high strand count wire,
low or high mating for
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