Today's Message Index:
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1. 04:45 AM - Re: D-sub connectors, what is disadvantage of solder over crimp? (user9253)
2. 06:53 AM - Re: D-sub connectors, what is disadvantage of solder over crimp? (Charlie England)
3. 09:23 AM - Flap Motor Circuit using Bosch Ice Cube relays (jonlaury)
4. 10:12 AM - Re: D-sub connectors, what is disadvantage of solder over crimp? (Vern Little)
5. 04:15 PM - Re: D-sub connectors, what is disadvantage of solder over crimp? (Robert L. Nuckolls, III)
6. 04:16 PM - Re: Re: D-sub connectors, what is disadvantage of solder over crimp? (Robert L. Nuckolls, III)
Message 1
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Subject: | Re: D-sub connectors, what is disadvantage of solder |
over crimp?
I believe the advantage of machined pins is a better electrical connection between
the male and female pins. Whether to solder or to crimp is another issue.
Joe
--------
Joe Gores
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=297817#297817
Message 2
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Subject: | Re: D-sub connectors, what is disadvantage of solder |
over crimp?
On 5/15/2010 12:23 AM, rparigoris wrote:
> --> AeroElectric-List message posted by: "rparigoris"<rparigor@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.
Message 3
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Subject: | Flap Motor Circuit using Bosch Ice Cube relays |
Came across this: Simple tidy and inexpensive.
http://www.electricscooterparts.com/relays.html
and then look at "Wiring instructions"
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=297834#297834
Message 4
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Subject: | Re: 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@bellsouth.net>
Sent: Saturday, May 15, 2010 6:51 AM
Subject: Re: AeroElectric-List: D-sub connectors, what is disadvantage of
solder over crimp?
> <ceengland@bellsouth.net>
>
> On 5/15/2010 12:23 AM, rparigoris wrote:
>> --> AeroElectric-List message posted by:
>> "rparigoris"<rparigor@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.
>
>
>
> Checked by AVG - www.avg.com
> 18:26:00
>
Message 5
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Subject: | Re: D-sub connectors, what is disadvantage of solder |
over crimp?
At 12:23 AM 5/15/2010, you wrote:
><rparigor@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
Different skill set, more difficult to correct errors.
Bob . . .
Message 6
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Subject: | Re: D-sub connectors, what is disadvantage of |
solder over crimp?
At 06:43 AM 5/15/2010, you wrote:
>
>I believe the advantage of machined pins is a better electrical
>connection between the male and female pins. Whether to solder or
>to crimp is another issue.
Hmmmm . . that may well be. Certainly the machined pins with
their 4-quad springs achieve a more robust mating between
pins . . . but event the Garmin's and King's use formed
pins that are crimped. So I suspect that for small signal
applications, the performance differences are insignificant.
Bob . . .
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