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Fast-on tabs or screw terminals for ground?

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haribole

Joined: 21 Feb 2014
Posts: 33
Location: United States

Posted: Wed Mar 23, 2016 6:48 am Post subject: Fast-on tabs or screw terminals for ground?

Hello Group

Intuitively screwed down ground terminals seem so much more reliable is there a reason the fast-on tabs are more popular? 

Thanks

Hari

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jbsoar(at)gmail.com
Guest

Posted: Wed Mar 23, 2016 7:58 am Post subject: Fast-on tabs or screw terminals for ground?

Fast-on Tabs are more reliable, and probably lighter.  Automobiles don't use screws to wires together, generally.  The ground straps on automobiles are often screwed or bolted, and they are often the weak points in the electrical system...



On Wed, Mar 23, 2016 at 7:44 AM, Hariharan Gopalan <rdu.hari(at)gmail.com (rdu.hari(at)gmail.com)> wrote:

 	  Quote: 	
		  Hello Group

Intuitively screwed down ground terminals seem so much more reliable is there a reason the fast-on tabs are more popular? 

Thanks

Hari

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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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yellowduckduo(at)gmail.co
Guest

Posted: Wed Mar 23, 2016 8:25 am Post subject: Fast-on tabs or screw terminals for ground?

I like that when fumbling behind and under the panel there is no screw 

to drop or threads to strip.



I suppose screw terminals generally require an extra joint when 

building. Crimping the ring terminal then the screw connection.

Ken



On 23/03/2016 10:44 AM, Hariharan Gopalan wrote:

 	  Quote: 	
		   Hello Group



 Intuitively screwed down ground terminals seem so much more reliable 

 is there a reason the fast-on tabs are more popular?



 Thanks

 Hari

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Robert Reed

Joined: 22 Oct 2009
Posts: 331
Location: Dallas/Ft.Worth

Posted: Wed Mar 23, 2016 8:26 am Post subject: Fast-on tabs or screw terminals for ground?

Considering the fact that reliability of the Fast-on Tabs seems to be equal to the screw on terminals it comes down to accessibility.  It seems that most of the electrical connections are always in a hard to access location and getting a screwdriver into those locations is always a chore that gets considerably worse with age, I will go with the fast-on tabs every time. 

Bob

       From: Hariharan Gopalan <rdu.hari(at)gmail.com>

 To: aeroelectric-list(at)matronics.com 

 Sent: Wednesday, March 23, 2016 9:44 AM

 Subject: Fast-on tabs or screw terminals for ground?

Hello Group

Intuitively screwed down ground terminals seem so much more reliable is there a reason the fast-on tabs are more popular? 

Thanks

Hari

- 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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haribole

Joined: 21 Feb 2014
Posts: 33
Location: United States

Posted: Wed Mar 23, 2016 10:02 am Post subject: Fast-on tabs or screw terminals for ground?

Seems like intuition can be wrong, like in flying. 

Thanks everyone.

On Wed, Mar 23, 2016 at 12:14 PM, Robert Reed <robertr237(at)att.net (robertr237(at)att.net)> wrote:

 	  Quote: 	
		  Considering the fact that reliability of the Fast-on Tabs seems to be equal to the screw on terminals it comes down to accessibility.  It seems that most of the electrical connections are always in a hard to access location and getting a screwdriver into those locations is always a chore that gets considerably worse with age, I will go with the fast-on tabs every time. 

Bob

       From: Hariharan Gopalan <rdu.hari(at)gmail.com (rdu.hari(at)gmail.com)>

 To: aeroelectric-list(at)matronics.com (aeroelectric-list(at)matronics.com) 

 Sent: Wednesday, March 23, 2016 9:44 AM

 Subject: AeroElectric-List: Fast-on tabs or screw terminals for ground?

  

 

Hello Group

Intuitively screwed down ground terminals seem so much more reliable is there a reason the fast-on tabs are more popular? 

Thanks

Hari

- 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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bobnoffs

Joined: 04 Jul 2012
Posts: 132
Location: northern wi.

Posted: Thu Mar 24, 2016 2:45 am Post subject: Fast-on tabs or screw terminals for ground?

downside to fat ons is you really do need needle nose to remove them and it gets to the point you wonder if you are damaging the tab or its attachment so much force is needed



 bob noffs

On Wed, Mar 23, 2016 at 12:59 PM, Hariharan Gopalan <rdu.hari(at)gmail.com (rdu.hari(at)gmail.com)> wrote:

 	  Quote: 	
		  Seems like intuition can be wrong, like in flying. 

Thanks everyone.

On Wed, Mar 23, 2016 at 12:14 PM, Robert Reed <robertr237(at)att.net (robertr237(at)att.net)> wrote:

 	  Quote: 	
		  Considering the fact that reliability of the Fast-on Tabs seems to be equal to the screw on terminals it comes down to accessibility.  It seems that most of the electrical connections are always in a hard to access location and getting a screwdriver into those locations is always a chore that gets considerably worse with age, I will go with the fast-on tabs every time. 

Bob

       From: Hariharan Gopalan <rdu.hari(at)gmail.com (rdu.hari(at)gmail.com)>

 To: aeroelectric-list(at)matronics.com (aeroelectric-list(at)matronics.com) 

 Sent: Wednesday, March 23, 2016 9:44 AM

 Subject: AeroElectric-List: Fast-on tabs or screw terminals for ground?

  

 

Hello Group

Intuitively screwed down ground terminals seem so much more reliable is there a reason the fast-on tabs are more popular? 

Thanks

Hari

- 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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donjohnston

Joined: 13 Dec 2009
Posts: 231

Posted: Thu Mar 24, 2016 4:01 pm Post subject: Re: Fast-on tabs or screw terminals for ground?

 	  jbsoar(at)gmail.com wrote: 	
		  Fast-on Tabs are more reliable, and probably lighter. 	




How can Fast-on Tabs be more reliable?  They are held on with just friction.  A ring terminal with a locknut would seem to be more secure. 



I am NOT saying Fast-on's are unreliable.  Just trying to understand the statement.

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stein(at)steinair.com
Guest

Posted: Thu Mar 24, 2016 4:43 pm Post subject: Fast-on tabs or screw terminals for ground?

Ever tried to get a "fast on" terminal (PIDG type) off of a good spade with

your bare fingers? Almost impossible....yet screws and locknuts (without

locktite that is) can and do often work themselves loose, especially during

the first 40 hrs of flight as things "settle in".



We many thousands upon thousands of both per year, and I'm a bit ambivalent

to either being superior, but I do know that if you use high quality

terminals those things are VERY good.



Just my 2 cents as usual.



Cheers,

Stein



--

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donjohnston

Joined: 13 Dec 2009
Posts: 231

Posted: Fri Mar 25, 2016 4:45 am Post subject: Re: Fast-on tabs or screw terminals for ground?

Well, to be fair, your 2 cents are worth about $2 compared to others. 



And I will continue providing you funds so you can offer your 2 cents here. 



Thanks for all that you do!



 	  stein(at)steinair.com wrote: 	
		  Ever tried to get a "fast on" terminal (PIDG type) off of a good spade with

your bare fingers? Almost impossible....yet screws and locknuts (without

locktite that is) can and do often work themselves loose, especially during

the first 40 hrs of flight as things "settle in".



We many thousands upon thousands of both per year, and I'm a bit ambivalent

to either being superior, but I do know that if you use high quality

terminals those things are VERY good.



Just my 2 cents as usual.



Cheers,

Stein



--

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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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