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Mic and Headset Jack Installation

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Jeff Smith

Joined: 10 Jan 2006
Posts: 9
Location: Knoxville, TN

Posted: Sun Feb 26, 2006 1:03 pm Post subject: Mic and Headset Jack Installation

Group,



I've read the AeroElectric connection, searched the archives, etc. but can't 

develop an answer to the following question: when I went to install my jacks I 

found that I could either drill a ~3/8" hole that would allow the threaded 

post of the jack to pass through, or b) drill a slightly larger hole that would 

allow the threaded post PLUS the small shoulder to pass through.  



I purchased some of the isolation washers from B&C and they slip easily over 

the threaded post of the jack but won't go down over the shoulder at the base 

of the post.



If I use the ~3/8" hole it appears the threaded portion of the jack could 

contact the panel as it passes through it, even with use of the isolation 

washers.  So I guess I'm not sure what the isolation washers are doing.



Need some help ......, Thanks,



Jeff

RV-7A

smithbkn(at)aol.com

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stein(at)steinair.com
Guest

Posted: Sun Feb 26, 2006 2:05 pm Post subject: Mic and Headset Jack Installation

If you have the higher end jacks, then the "shoulder" on the threaded part

of the jack is still part of the center ring or threaded portion.  The goal

of the insulated washers is to completely isolate that part of the jack

(center ring) from the metal panel and airframe ground...  It's still a good

idea to use the washers on the jacks, so drill the hold large enough to

allow the insualting washers.



Cheers,

Stein.



[quote]--

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nuckollsr(at)cox.net
Guest

Posted: Sun Feb 26, 2006 7:35 pm Post subject: Mic and Headset Jack Installation

At 04:02 PM 2/26/2006 -0500, you wrote:



 	  Quote: 	
		  



Group,



I've read the AeroElectric connection, searched the archives, etc. but can't

develop an answer to the following question: when I went to install my 

jacks I

found that I could either drill a ~3/8" hole that would allow the threaded

post of the jack to pass through, or b) drill a slightly larger hole that 

would

allow the threaded post PLUS the small shoulder to pass through.



I purchased some of the isolation washers from B&C and they slip easily over

the threaded post of the jack but won't go down over the shoulder at the base

of the post.


	


   That isn't what they're supposed to do.



 	  Quote: 	
		  If I use the ~3/8" hole it appears the threaded portion of the jack could

contact the panel as it passes through it, even with use of the isolation

washers.  So I guess I'm not sure what the isolation washers are doing.


	


   Drill a 1/2" hole. Put the extruded washer on the jack first, extrusion

   facing up. Insert jack in hole from behind and place flat insulating

   washer on over the jack's barrel followed by the flat metal washer and

   finally the screw.



   The insulating washers will sandwich the panel material while the

   extrusion keeps the jack centered in the hole and isolated from

   the panel.



   Bob . . .

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