 |
Matronics Email Lists
Web Forum Interface to the Matronics Email Lists
|
| View previous topic :: View next topic |
| Author |
Message |
ceengland(at)bellsouth.ne
Guest
|
 Posted: Sat May 15, 2010 5:53 am Post subject: D-sub connectors, what is disadvantage of solder over crimp |
 |
|
On 5/15/2010 12:23 AM, rparigoris wrote:
| Quote: |
What is the disadvantage of using a 36 or 50 pin solder pot d-sub connectors (while having an extra set of hands to insert wires) where you heat shrink over solder pot and wire compared to using much more expensive machined pin connectors that are crimped?
Ron Parigoris
Hi Ron,
|
Assuming that the mating areas of the pins/sockets are gold plated,
there's no electrical or reliability advantage of one over the other.
Contrary to popular hangar-myth, there's no more danger of wire failure
outside the joint with solder than with crimp, assuming that both are
properly supported outside the joint. Actually, there's a real advantage
of using solder type connectors: there's no danger of a pin backing out
in use, which happens fairly often with crimp style connectors.
The 'disadvantage' is that the skillset required to solder a multi-pin
connector properly takes a bit longer to develop than the skillset to
squeeze the handles of a crimp tool. (That's basically why crimp was
developed: higher productivity & ability to use lower skilled labor).
Once you acquire the proper tools (soldering iron, etc) & develop the
skills, you can fabricate a cable that will be just as (or more)
reliable as any made with crimps. It will just take a bit longer to do
it, and you won't be able to move pins around if you get a wire in the
wrong location while soldering. Also, once your skills are adequate,
there's no need for heat shrink over the joints, since the exposed area
of the wire will be very short (just enough to touch with the end of the
solder) and will be a rigid extension of the pin itself (can't 'lean
over' to touch the next bare wire). Remember, the shell will provide
proper support to prevent flexing at the transition from rigid to
flexible wire.
If you already have a good, controlled heat, fine tip iron, buy a cheap
9pin Dsub connector & start practicing.
Charlie
Didn't sleep in a Holiday Inn last night, but I was an electronics tech
in a couple of past lives.
| | - The Matronics AeroElectric-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?AeroElectric-List |
|
|
|
| Back to top |
|
 |
sprocket(at)vx-aviation.c
Guest
|
| Posted: Sat May 15, 2010 9:12 am Post subject: D-sub connectors, what is disadvantage of solder over crimp |
|
|
Try soldering when you are upside down underneath your panel and you need to
make a wiring change... you'll appreciate crimp connectors much more! For
example, Garmin introduced frequency selection on their X96 GPSs and then
Dynon announced their HSI functions on their EFIS systems, both well after
product introduction. These changes only required the removal and
reinsertion of existing crimp wires to enable the functions in my aircraft
(a bit of foresight helped as well).
You can purchase the pins from Steinair or B&C for a good price, along with
the necessary tools. I've been soldering for more than 40 years, and I like
the crimp pins better than the solder cup connectors.
Vern
--------------------------------------------------
From: "Charlie England" <ceengland(at)bellsouth.net>
Sent: Saturday, May 15, 2010 6:51 AM
To: <aeroelectric-list(at)matronics.com>
Subject: Re: D-sub connectors, what is disadvantage of
solder over crimp?
| Quote: |
<ceengland(at)bellsouth.net>
On 5/15/2010 12:23 AM, rparigoris wrote:
>
> "rparigoris"<rparigor(at)suffolk.lib.ny.us>
>
> What is the disadvantage of using a 36 or 50 pin solder pot d-sub
> connectors (while having an extra set of hands to insert wires) where you
> heat shrink over solder pot and wire compared to using much more
> expensive machined pin connectors that are crimped?
>
> Ron Parigoris
>
Hi Ron,
Assuming that the mating areas of the pins/sockets are gold plated,
there's no electrical or reliability advantage of one over the other.
Contrary to popular hangar-myth, there's no more danger of wire failure
outside the joint with solder than with crimp, assuming that both are
properly supported outside the joint. Actually, there's a real advantage
of using solder type connectors: there's no danger of a pin backing out
in use, which happens fairly often with crimp style connectors.
The 'disadvantage' is that the skillset required to solder a multi-pin
connector properly takes a bit longer to develop than the skillset to
squeeze the handles of a crimp tool. (That's basically why crimp was
developed: higher productivity & ability to use lower skilled labor).
Once you acquire the proper tools (soldering iron, etc) & develop the
skills, you can fabricate a cable that will be just as (or more)
reliable as any made with crimps. It will just take a bit longer to do
it, and you won't be able to move pins around if you get a wire in the
wrong location while soldering. Also, once your skills are adequate,
there's no need for heat shrink over the joints, since the exposed area
of the wire will be very short (just enough to touch with the end of the
solder) and will be a rigid extension of the pin itself (can't 'lean
over' to touch the next bare wire). Remember, the shell will provide
proper support to prevent flexing at the transition from rigid to
flexible wire.
If you already have a good, controlled heat, fine tip iron, buy a cheap
9pin Dsub connector & start practicing.
Charlie
Didn't sleep in a Holiday Inn last night, but I was an electronics tech
in a couple of past lives.
|
| | - The Matronics AeroElectric-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?AeroElectric-List |
|
|
|
| Back to top |
|
|
|
|
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum
|
Powered by phpBB © 2001, 2005 phpBB Group
|
Get Email Distribution Too!
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
