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Sealed Connectors

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cluros(at)gmail.com
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Posted: Tue Jan 12, 2021 2:01 pm Post subject: Sealed Connectors

Is there a weather sealed PIDG blade crimp connector? I seem to remember something with heat shrink and glue. They looked like this but with a heat shrink end for the wire.



[img]cid:ii_kjujbwp60[/img]

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stuart(at)stuarthutchison
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Posted: Tue Jan 12, 2021 2:25 pm Post subject: Sealed Connectors

I just put dual-wall (glue-lined) heatshrink over the crimped connector … it’s then sealed and provides great strain relief all in one.



V/r, Stuart



 	  Quote: 	
		   On 13 Jan 2021, at 8:56 am, Sebastien <cluros(at)gmail.com> wrote:

 

 Is there a weather sealed PIDG blade crimp connector? I seem to remember something with heat shrink and glue. They looked like this but with a heat shrink end for the wire.

 

 <OIP.jpg>

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alec(at)alecmyers.com
Guest

Posted: Tue Jan 12, 2021 4:12 pm Post subject: Sealed Connectors

This stuff is *awesome* for sealing connectors, splices etc, and it’s not badly priced. Comes in 4 diameters, with a great shrink ratio.

IF you can’t find the connector you want you can use a section of this on the stem:

https://www.mouser.ca/datasheet/2/418/5/NG_DS_ES1000_404-735359.pdf



On Jan 12, 2021, at 4:56 PM, Sebastien <cluros(at)gmail.com> wrote:



Is there a weather sealed PIDG blade crimp connector? I seem to remember something with heat shrink and glue. They looked like this but with a heat shrink end for the wire.



<OIP.jpg>

- 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:

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Kellym

Joined: 10 Jan 2006
Posts: 1705
Location: Sun Lakes AZ

Posted: Tue Jan 12, 2021 5:43 pm Post subject: Sealed Connectors

If the connection is where you are worried about weather connection, and 

the wire is #18 or smaller, suggest you dump the blade connectors and 

get Electronics International OLC-1 or better OLC-2 connectors. They 

create a weather tight seal using Allen screws in a connective sleeve. 

Intended for EGT, CHT and fuel sending units in engine compartment. They 

cost $1 each in multiples of 5 from the company direct, free shipping 

and free Allen wrench. Blade connectors on EGT and CHT weather and get 

highly variable resistance, causing unpredictable swings in readings. 

The OLC connectors give rock solid readings and are reusable, unlike 

crimp connectors.



On 1/12/2021 5:07 PM, Alec Myers wrote:

 	  Quote: 	
		   

 

 This stuff is *awesome* for sealing connectors, splices etc, and it’s not badly priced. Comes in 4 diameters, with a great shrink ratio.

 IF you can’t find the connector you want you can use a section of this on the stem:

 https://www.mouser.ca/datasheet/2/418/5/NG_DS_ES1000_404-735359.pdf

 

 

 

 On Jan 12, 2021, at 4:56 PM, Sebastien <cluros(at)gmail.com> wrote:

 

 Is there a weather sealed PIDG blade crimp connector? I seem to remember something with heat shrink and glue. They looked like this but with a heat shrink end for the wire.

 

 <OIP.jpg>

- 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:

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_________________
Kelly McMullen
A&P/IA, EAA Tech Counselor # 5286
KCHD

dj_theis

Joined: 28 Aug 2017
Posts: 56
Location: Minnesota

Posted: Wed Jan 13, 2021 8:33 am Post subject: Re: Sealed Connectors

thanks Kelly,

 	  Quote: 	
		  Blade connectors on EGT and CHT weather and get

highly variable resistance, causing unpredictable swings in readings. 	




So, you are suggesting that the PIDG connectors have been an issue for you in the past, with TC wiring.  



I just yesterday recieved a large order from an avionics vendor (obviously, not EI) that included both EGT and CHT TC wiring, with one end pre-terminated using PIDG connectors and the mating PIDG included.



I guess this suggests I should swap these out to avoid an issue.  Do you think that corrosion is the mail culprit and that properly sealing the PIDG connectors would address this?



Dan Theis

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_________________
Dan Theis
Scratch building Sonex #1362
Still working on the Revmaster Alternator improvement

cluros(at)gmail.com
Guest

Posted: Wed Jan 13, 2021 9:13 am Post subject: Sealed Connectors

The OLC connectors are much better than the blade connectors at reducing erroneous EGT and CHT readings. They are rather fiddly to work with and are not weather sealed. Our engine puts out a great deal of heat, vibration, and movement and after many problems with the PIDG connectors supplied by Dynon we were going to replace them with OLC connectors but decided to try a cheaper solution first: Dsub pins covered with shrink wrap. So far very pleased with the result. Easy to install, good quality signal and no failures.

Thank you for the suggestion Kelly but these connectors are going to be installed in a set of floats so the OLCs would quickly fail due to corrosion. I'm actually pushing the owners to go to Deutsch connectors but don't think they'll like the cost.

On Wed, Jan 13, 2021 at 8:45 AM dj_theis <djtheis58(at)gmail.com (djtheis58(at)gmail.com)> wrote:

 	  Quote: 	
		  --> AeroElectric-List message posted by: "dj_theis" <djtheis58(at)gmail.com (djtheis58(at)gmail.com)>

 thanks Kelly,

 > Blade connectors on EGT and CHT weather and get

 > highly variable resistance, causing unpredictable swings in readings.

 So, you are suggesting that the PIDG connectors have been an issue for you in the past, with TC wiring.  

 I just yesterday recieved a large order from an avionics vendor (obviously, not EI) that included both EGT and CHT TC wiring, with one end pre-terminated using PIDG connectors and the mating PIDG included.

 I guess this suggests I should swap these out to avoid an issue.  Do you think that corrosion is the mail culprit and that properly sealing the PIDG connectors would address this?

 Dan Theis

 --------

 Scratch building Sonex #1362

 Read this topic online here:

 http://forums.matronics.com/viewtopic.php?p=500194#500194

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Kellym

Joined: 10 Jan 2006
Posts: 1705
Location: Sun Lakes AZ

Posted: Wed Jan 13, 2021 1:28 pm Post subject: Sealed Connectors

Quite frankly I don't know if it is vibration, difficulty in getting the 

blade fully seated or corrosion. All all I know is when I made the 

switch, all jumpiness on readings went away, and the connection on my 

fuel flow was good enough that I had to change the K-factor by 5,000, 

say from around 72,000 down to 67,000. 

On 1/13/2021 9:33 AM, dj_theis wrote:

 	  Quote: 	

 thanks Kelly,

> Blade connectors on EGT and CHT weather and get

> highly variable resistance, causing unpredictable swings in readings.

 So, you are suggesting that the PIDG connectors have been an issue for you in the past, with TC wiring.

 I just yesterday recieved a large order from an avionics vendor (obviously, not EI) that included both EGT and CHT TC wiring, with one end pre-terminated using PIDG connectors and the mating PIDG included.

 I guess this suggests I should swap these out to avoid an issue.  Do you think that corrosion is the mail culprit and that properly sealing the PIDG connectors would address this?

 Dan Theis

 --------

 Scratch building Sonex #1362

 Read this topic online here:

 http://forums.matronics.com/viewtopic.php?p=500194#500194

- 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

_________________
Kelly McMullen
A&P/IA, EAA Tech Counselor # 5286
KCHD

Kellym

Joined: 10 Jan 2006
Posts: 1705
Location: Sun Lakes AZ

Posted: Wed Jan 13, 2021 1:35 pm Post subject: Sealed Connectors

The OLC 1 connectors are fiddley because you have to get both wires 

inside first, then tighten the hex. The OLC-2 are much easier to use 

since you insert one wire, tighten hex, the insert wire 2 and tighten 

hex. If weather proofing is the concern, such as in floats, then use the 

best heat shrink tube available, slide it on after first wire is 

connected, set second wire, then slide heat shrink tube to center on 

connection and hit with heat gun. Using dSub you have to have correct 

crimper and get it properly adjusted. I don't see that as easier than 

just tightening a hex screw on each wire.



On 1/13/2021 10:08 AM, Sebastien wrote:

 	  Quote: 	
		   The OLC connectors are much better than the blade connectors at reducing 

 erroneous EGT and CHT readings. They are rather fiddly to work with and 

 are not weather sealed. Our engine puts out a great deal of heat, 

 vibration, and movement and after many problems with the PIDG connectors 

 supplied by Dynon we were going to replace them with OLC connectors but 

 decided to try a cheaper solution first: Dsub pins covered with shrink 

 wrap. So far very pleased with the result. Easy to install, good quality 

 signal and no failures.

 

 Thank you for the suggestion Kelly but these connectors are going to be 

 installed in a set of floats so the OLCs would quickly fail due to 

 corrosion. I'm actually pushing the owners to go to Deutsch connectors 

 but don't think they'll like the cost.

 

 On Wed, Jan 13, 2021 at 8:45 AM dj_theis <djtheis58(at)gmail.com 

 <mailto:djtheis58(at)gmail.com>> wrote:

 

     

     <djtheis58(at)gmail.com <mailto:djtheis58(at)gmail.com>>

 

     thanks Kelly,

 

 

 

      > Blade connectors on EGT and CHT weather and get

      > highly variable resistance, causing unpredictable swings in readings.

 

 

     So, you are suggesting that the PIDG connectors have been an issue

     for you in the past, with TC wiring.

 

     I just yesterday recieved a large order from an avionics vendor

     (obviously, not EI) that included both EGT and CHT TC wiring, with

     one end pre-terminated using PIDG connectors and the mating PIDG

     included.

 

     I guess this suggests I should swap these out to avoid an issue.  Do

     you think that corrosion is the mail culprit and that properly

     sealing the PIDG connectors would address this?

 

     Dan Theis

 

     --------

     Scratch building Sonex #1362

 

 

 

 

     Read this topic online here:

 

     http://forums.matronics.com/viewtopic.php?p=500194#500194

     <http://forums.matronics.com/viewtopic.php?p=500194#500194>

 

 

 

 

 

 

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     eferrer" target="_blank">http://forums.matronics.com

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     errer" target="_blank">http://wiki.matronics.com

     ===========

     b Site -

                -Matt Dralle, List Admin.

     rel="noreferrer" target="_blank">http://www.matronics.com/contribution

     ===========

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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:

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_________________
Kelly McMullen
A&P/IA, EAA Tech Counselor # 5286
KCHD

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