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Ground Tabs

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ron.mcgann(at)baesystems.
Guest

Posted: Fri Oct 19, 2007 3:28 am Post subject: Ground Tabs

G'day all,

 

 For those that have completed the engine install, how many ground tabs are typically required on the engine side of the firewall?  I have a 24 tab block on the cabin side and plan a smaller 10 tab block on the engine side - is 10 enough?

 

 

 thanks in advance

 Ron

 187 finishing

    [quote]"Warning:

The information contained in this email and any attached files is

confidential to BAE Systems Australia. If you are not the intended

recipient, any use, disclosure or copying of this email or any

attachments is expressly prohibited.  If you have received this email

in error, please notify us immediately. VIRUS: Every care has been

taken to ensure this email and its attachments are virus free,

however, any loss or damage incurred in using this email is not the

sender's responsibility.  It is your responsibility to ensure virus

checks are completed before installing any data sent in this email to

your computer."



[b]

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Albert Gardner

Joined: 10 Jan 2006
Posts: 455
Location: Yuma, AZ

Posted: Fri Oct 19, 2007 4:30 am Post subject: Ground Tabs

I used only 1 tab on the engine side of the firewall. That one was for the  oil pressure switch that connected the Hobbs meter to ground.  

Albert Gardner  

Yuma, AZ  

N991RV  

   

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_________________
RV-9A N872RV
RV-10 N991RV

Tim Olson

Joined: 25 Jan 2007
Posts: 2881

Posted: Fri Oct 19, 2007 4:52 am Post subject: Ground Tabs

Ron,



For a Lyc install, 10 is even way more than you need for the

smaller ground wires.  You'll have almost nothing.  You

will, however, want to make sure you have a good engine

and engine mount ground strap.



Tim

McGANN, Ron wrote:

 	  Quote: 	
		   G'day all,

 

 For those that have completed the engine install, how many ground tabs 

 are typically required on the engine side of the firewall?  I have a 24 

 tab block on the cabin side and plan a smaller 10 tab block on the 

 engine side - is 10 enough?

 

 

 thanks in advance

 Ron

 187 finishing

 

 "Warning:

 The information contained in this email and any attached files is

 confidential to BAE Systems Australia. If you are not the intended

 recipient, any use, disclosure or copying of this email or any

 attachments is expressly prohibited.  If you have received this email

 in error, please notify us immediately. VIRUS: Every care has been

 taken to ensure this email and its attachments are virus free,

 however, any loss or damage incurred in using this email is not the

 sender's responsibility.  It is your responsibility to ensure virus

 checks are completed before installing any data sent in this email to

 your computer."

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jesse(at)saintaviation.co
Guest

Posted: Fri Oct 19, 2007 5:03 am Post subject: Ground Tabs

On the engine side I just have the one big ground from the engine to the airframe.  I don’t ground anything else on the front side.  The 24 tab block should probably cover it on the cabin side.  

   

Do not archive  

     

Jesse Saint  

Saint Aviation, Inc.  

jesse(at)saintaviation.com (jesse(at)saintaviation.com)  

www.saintaviation.com  

Cell: 352-427-0285  

Fax: 815-377-3694  

        

  

From: McGANN, Ron [mailto:ron.mcgann(at)baesystems.com] 

 Sent: Friday, October 19, 2007 6:27 AM

 To: rv10-list(at)matronics.com

 Subject: Ground Tabs  

  

   

G'day all,

 

 For those that have completed the engine install, how many ground tabs are typically required on the engine side of the firewall?  I have a 24 tab block on the cabin side and plan a smaller 10 tab block on the engine side - is 10 enough?

 

 

 thanks in advance

 Ron

 187 finishing  [quote]"Warning:The information contained in this email and any attached files isconfidential to BAE Systems Australia. If you are not the intendedrecipient, any use, disclosure or copying of this email or anyattachments is expressly prohibited.  If you have received this emailin error, please notify us immediately. VIRUS: Every care has beentaken to ensure this email and its attachments are virus free,however, any loss or damage incurred in using this email is not thesender's responsibility.  It is your responsibility to ensure viruschecks are completed before installing any data sent in this email toyour computer."    [b]

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Tim Olson

Joined: 25 Jan 2007
Posts: 2881

Posted: Fri Oct 19, 2007 5:26 am Post subject: Ground Tabs

On the inside of the cabin, it will depend greatly on how much

you try to pull grounds back for all circuits to use the

single-point ground to prevent ground issues.  I filled up

about 48 or more tabs on mine.  I think the strip from B&C

was about 5" long or so. It won't hurt to buy oversized on the

ground tab block if you have room for it.



Tim Olson - RV-10 N104CD - Flying



Jesse Saint wrote:

 	  Quote: 	
		   On the engine side I just have the one big ground from the engine to the 

 airframe.  I don’t ground anything else on the front side.  The 24 tab 

 block should probably cover it on the cabin side.

 

  


	


 	  Quote: 	
		   

  

 

 Jesse Saint

 

 Saint Aviation, Inc.

 

 jesse(at)saintaviation.com <mailto:jesse(at)saintaviation.com>

 

 www.saintaviation.com <http://www.saintaviation.com>

 

 Cell: 352-427-0285

 

 Fax: 815-377-3694

 

 ------------------------------------------------------------------------

 

 *From:* McGANN, Ron [mailto:ron.mcgann(at)baesystems.com]

 *Sent:* Friday, October 19, 2007 6:27 AM

 *To:* rv10-list(at)matronics.com

 *Subject:* Ground Tabs

 

  

 

 G'day all,

 

 For those that have completed the engine install, how many ground tabs 

 are typically required on the engine side of the firewall?  I have a 24 

 tab block on the cabin side and plan a smaller 10 tab block on the 

 engine side - is 10 enough?

 

 

 thanks in advance

 Ron

 187 finishing

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bcondrey

Joined: 03 Apr 2006
Posts: 580

Posted: Fri Oct 19, 2007 7:03 am Post subject: Ground Tabs

Ron,  

   

One more data point for you – I just looked and am using 5 tabs on the engine side of the FW and can’t imagine using more.  Here’s the list: Oil Temp sensor, Fuel Pressure sensor, 2 hall effect current sensors (dual electrical bus and I’m monitoring total current draw from each alternator, and finally 1 for an old fashioned Oil Pressure switch like you’d use for a hobbs (drives an oil pressure light – I have my EIS remotely mounted and have all alerting via the EFIS so this is a backup).  

   

I’m using a GRT EIS if it makes a difference.  Grounding sensors on the cabin side wouldn’t be a big deal if you wanted to totally avoid the connections on the engine side – just more wire to run.  

   

Bob #40105  

         

  

From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of McGann, Ron (AUS BAeA)

 Sent: Friday, October 19, 2007 6:27 AM

 To: rv10-list(at)matronics.com

 Subject: Ground Tabs  

  

   

G'day all,

 

 For those that have completed the engine install, how many ground tabs are typically required on the engine side of the firewall?  I have a 24 tab block on the cabin side and plan a smaller 10 tab block on the engine side - is 10 enough?

 

 

 thanks in advance

 Ron

 187 finishing   	  Quote: 	
		  "Warning:The information contained in this email and any attached files isconfidential to BAE Systems Australia. If you are not the intendedrecipient, any use, disclosure or copying of this email or anyattachments is expressly prohibited.  If you have received this emailin error, please notify us immediately. VIRUS: Every care has beentaken to ensure this email and its attachments are virus free,however, any loss or damage incurred in using this email is not thesender's responsibility.  It is your responsibility to ensure viruschecks are completed before installing any data sent in this email toThe information contained in this email and any attached files is 	
0 	  Quote: 	
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		  confidential to BAE Systems Australia. If you are not the intended 	
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6

      [quote][b]

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lessdragprod(at)aol.com
Guest

Posted: Fri Oct 19, 2007 7:15 am Post subject: Ground Tabs

Just a point of clarification.  (However, this does go back a few years to what I think I remember.)

 

 A single ground point refers to the same electrical ground potential, rather than physically the same point.

 

 Having a 24 tab block on the firewall back to back with a 10 tab block on the engine side of the firewall should be both.

 

 Not having ground wires go through the firewall sounds like a good thing.  However, the tab connections are more subject to the elements (corrosion) on the front side of the firewall and should be protected accordingly.

 

 Regards,

 Jim Ayers

 

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Bill Schlatterer

Joined: 09 Jan 2006
Posts: 195

Posted: Fri Oct 19, 2007 4:50 pm Post subject: Ground Tabs

Could also have grounds for P-Mags and E-Mags that might go  to the FW instead of engine?  Why not just put the small B&C block on  the other side (FW side) of the internal (Cabin side) big block and have  plenty?  BUT 10 should be plenty!

  

 Bill 7a Ark



   From: owner-rv10-list-server(at)matronics.com  [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of Condrey, Bob  (US SSA)

Sent: Friday, October 19, 2007 10:03 AM

To:  rv10-list(at)matronics.com

Subject: RE: Ground  Tabs

 

  

Ron, 

  

One more data point for  you – I just looked and am using 5 tabs on the engine side of the FW and can’t  imagine using more.  Here’s the list: Oil Temp sensor, Fuel Pressure  sensor, 2 hall effect current sensors (dual electrical bus and I’m monitoring  total current draw from each alternator, and finally 1 for an old fashioned Oil  Pressure switch like you’d use for a hobbs (drives an oil pressure light – I  have my EIS remotely mounted and have all alerting via the EFIS so this is a  backup). 

  

I’m using a GRT EIS if  it makes a difference.  Grounding sensors on the cabin side wouldn’t be a  big deal if you wanted to totally avoid the connections on the engine side –  just more wire to run. 

  

Bob  #40105 

     

 

From:  owner-rv10-list-server(at)matronics.com  [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of McGann, Ron (AUS  BAeA)

Sent: Friday, October 19,  2007 6:27 AM

To:  rv10-list(at)matronics.com

Subject: Ground  Tabs

 

  

G'day  all,



For those that have completed the engine install, how many ground  tabs are typically required on the engine side of the firewall?  I have a  24 tab block on the cabin side and plan a smaller 10 tab block on the engine  side - is 10 enough?

thanks in advance

Ron

187  finishing 	  Quote: 	
		  "Warning:The information contained in this email and any attached files isconfidential to BAE Systems Australia. If you are not the intendedrecipient, any use, disclosure or copying of this email or anyattachments is expressly prohibited.  If you have received this emailin error, please notify us immediately. VIRUS: Every care has beentaken to ensure this email and its attachments are virus free,however, any loss or damage incurred in using this email is not thesender's responsibility.  It is your responsibility to ensure viruschecks are completed before installing any data sent in this email toThe information contained in this email and any attached files is 	
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		  confidential to BAE Systems Australia. If you are not the intended 	
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6

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		  confidential to BAE Systems Australia. If you are not the intended 	
7    [quote][b]

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ron.mcgann(at)baesystems.
Guest

Posted: Fri Oct 19, 2007 11:43 pm Post subject: Ground Tabs

Thanks for all the responses guys.  I have no shortage of ground tabs inside the cabin, the 24 tab block is connected to a couple of 25 pin dsubs ganged together and connected ala Nuckolls.  I'll go with the 10 tab block on the engine side.



Jim - what do you use for corrosion protection of the engine side block??



cheers,

Ron

--

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