Matronics Email Lists :: View topic - Instrument mounting hole circle

Matronics Email Lists
Web Forum Interface to the Matronics Email Lists

Get Email Distribution Too! FAQ Search Memberlist Usergroups Register

Profile Log in to check your private messages Log in

Instrument mounting hole circle

Matronics Email Lists Forum Index -> RV-List

View previous topic :: View next topic

Author Message

Mark Phillips in TN

Joined: 10 Jan 2006
Posts: 431
Location: Columbia, TN

Posted: Thu Nov 16, 2006 8:05 pm Post subject: Instrument mounting hole circle

I'm about all archived & googled out and the best I've come up with for mounting screw hole diameter for standard 2-1/4" instruments is 2-5/8" (2.625).  Can someone please confirm this before I commit expensive aluminum to the cutter?

  

 "Googling is like fishing for trout in a landfill" - Ruth Harrison, Reference Librarian

  

 Thanks!

 Mark do not archive

  [quote][b]

_________________
From The PossumWorks...

rickgray(at)roadrunner.co
Guest

Posted: Fri Nov 17, 2006 4:31 am Post subject: Instrument mounting hole circle

Hi Mark,

 I've laid them out by 'hand' too many  times....this little ACS tool takes all the guess work out of it....I keep one  on the bench now! Top right in the pic....I think you can afford it...but then  again??

  

 http://www.aircraftspruce.com/pdf/2007Individual/Cat07380.pdf

  

 Good Luck,

 Rick in Ohio at the Buffalo  Farm

 http://rv6rick.tripod.com/ohiovalleyrvators/

  

 for the archives

  

 [quote]   ---

Dale Ensing

Joined: 11 Jan 2006
Posts: 571
Location: Aero Plantation Weddington NC

Posted: Fri Nov 17, 2006 4:40 am Post subject: Instrument mounting hole circle

Mark,

 Do you know anyone who might have one of the flat plate drilling jigs?  After the large hole is cut you place the jig plate into the hole, square it up  and drill the screw holes. Simple and quick.

 Dale Ensing

 [quote]   ---

_________________
Dale Ensing
RV-6A
Aero Plantation
Weddington NC

Mark Phillips in TN

Joined: 10 Jan 2006
Posts: 431
Location: Columbia, TN

Posted: Fri Nov 17, 2006 5:27 am Post subject: Instrument mounting hole circle

Hi Dale- thanks for the reply, but the panel is being laid out in AutoCAD for waterjet cutting and I don't thing the jig will fit into the USB port!  This thing only understands numbers from the keyboard, dangit!

  

 Thanks again- Mark do not archive

  [quote][b]

_________________
From The PossumWorks...

rickgray(at)roadrunner.co
Guest

Posted: Fri Nov 17, 2006 5:43 am Post subject: Instrument mounting hole circle

Mark, I just emailed you a pic of my ruler  on the template....it's 1 7/8's inches.

  

 Good Luck buddy!

 Rick in Ohio at the Buffalo  Farm

 http://rv6rick.tripod.com/ohiovalleyrvators/

 for the archives

 [quote]   ---

Bruce(at)glasair.org
Guest

Posted: Fri Nov 17, 2006 7:36 am Post subject: Instrument mounting hole circle

There are some surprises out there. All  Davtron mounting holes are non standard. It's best to check the web sites of  each manufacturer. Have your panel cutter cut a trial panel in plexiglass for  you to do fit up tests before cutting the aluminum. If your cutter doesn't want  to do that, find another cutter. (www.engravers.net, Wayne Calhoon)  I  went through several plexi mockups before everything fit. It's realy best if you  have the instruments on hand to do the fit up.

  

  

 

Bruce

www.glasair.org

   [quote]   

   --

Mark Phillips in TN

Joined: 10 Jan 2006
Posts: 431
Location: Columbia, TN

Posted: Fri Nov 17, 2006 9:08 am Post subject: Instrument mounting hole circle

In a message dated 11/17/2006 9:49:22 AM Central Standard Time, Bruce(at)glasair.org writes:

  	  Quote: 	
		  It's realy best if you have the instruments on hand to do the fit up. 	


 >>>

 Hi Bruce- thanks for the reply.  Understood and agree- this is for Trutrak Digiflight. Trutrak was asked the question and replied "standard instrument cutout dimensions".  Instruments on order, not in hand.

  

 Beginning to think this simple, common dimension must either be secret information (I'll have to kill you) or I'm the only one not in the Brotherhood...

  

 Mark, looking for number, leaning towards 2-5/8" but not confirmed and do not archive

  [quote][b]

_________________
From The PossumWorks...

gyoung

Joined: 09 Jan 2006
Posts: 211
Location: Republic of Texas

Posted: Fri Nov 17, 2006 11:14 am Post subject: Instrument mounting hole circle

It's not a secret...  really. Somewhere in the Aircraft Spruce catalog there is a diagram of the  standard cutouts with dimensions. It might be accessible thru the web as well  although I haven't tried.

  

 Greg  Young



 [quote]         From: owner-rv-list-server(at)matronics.com    [mailto:owner-rv-list-server(at)matronics.com] On Behalf Of    Fiveonepw(at)aol.com

Sent: Friday, November 17, 2006 11:07    AM

To: rv-list(at)matronics.com

Subject: Re:    Instrument mounting hole circle

   

      In a message dated 11/17/2006 9:49:22 AM Central Standard Time,    Bruce(at)glasair.org writes:

    	  Quote: 	
		  It's realy best if you have the instruments on hand to do the fit      up. 	


   >>>

   Hi Bruce- thanks for the reply.  Understood and agree- this is for    Trutrak Digiflight. Trutrak was asked the question and replied "standard    instrument cutout dimensions".  Instruments on order, not in hand.

    

   Beginning to think this simple, common dimension must either be secret    information (I'll have to kill you) or I'm the only one not in the    Brotherhood...

    

   Mark, looking for number, leaning towards 2-5/8" but not confirmed and do    not archive

[b]

jim jewell

Joined: 09 Jan 2006
Posts: 82
Location: Kelowna B.C. Canada

Posted: Fri Nov 17, 2006 11:14 am Post subject: Instrument mounting hole circle

Brother, I feel your pain. A couple of years ago my local area paranoia  victims group changed the time and location of the meetings and no one will  tell me where and when!?...

  

 I fly-cut my instrument holes on my drill press. I used the few instruments  I had on hand at the time and cut all the holes to the smallest dimensional  tight fit.

 When the two remaining instruments arrived one of the holes  was too small. After cussing a bit, I used a machinist's de-burring tool to  enlarge the small hole. By doing a few cuts while holding the panel upright the  some more after rotating the panel a quarter turn, a few more cuts, rotate a  quarter turn, and so on I was able to enlarge the hole fairly uniformly  to a good fit. I then went back and de-burred the remaining holes to allow  for painting.

  

 Fortunately for me, I did not find any holes to be way too  large. However had I done so there might have been full justification for  trying to join that damn paranoid club in the first place.{[

  

 Jim in Kelowna - do not archive 

  

 [quote]    

      In a message dated 11/17/2006 9:49:22 AM Central Standard Time, Bruce(at)glasair.org (Bruce(at)glasair.org) writes:



    

   Hi Bruce- thanks for the reply.  Understood and agree- this is for    Trutrak Digiflight. Trutrak was asked the question and replied "standard    instrument cutout dimensions".  Instruments on order, not in hand.

    

   Beginning to think this simple, common dimension must either be secret    information (I'll have to kill you) or I'm the only one not in the    Brotherhood...

    

   Mark, looking for number, leaning towards 2-5/8" but not confirmed and do    not archive

 	  Quote: 	
		  



href="http://www.aeroelectric.com">www.aeroelectric.com

href="http://www.buildersbooks.com">www.buildersbooks.com

href="http://www.kitlog.com">www.kitlog.com

href="http://www.homebuilthelp.com">www.homebuilthelp.com

href="http://www.matronics.com/contribution">http://www.matronics.com/chref="http://www.matronics.com/Navigator?RV-List">http://www.matronics.com/Navigator?RV-List



	
[b]

_________________
"I never make mistreaks"

Doug Gray

Joined: 10 Jan 2006
Posts: 112
Location: Sydney, Australia

Posted: Fri Nov 17, 2006 1:53 pm Post subject: Instrument mounting hole circle

Mounting holes on 2-5/8" diameter circle is the standard.  This is

consistent with the ACS diagram, Vans 2-1/4" gauges and the drill jig

from Avery. I cannot speak for any other manufacturers.



I have been told there is some slight variation so don't plan to mount

the instruments with countersunk screws.



Doug Gray



On Fri, 2006-11-17 at 12:07 -0500, Fiveonepw(at)aol.com wrote:

 	  Quote: 	
		   In a message dated 11/17/2006 9:49:22 AM Central Standard Time,

 Bruce(at)glasair.org writes:

         It's realy best if you have the instruments on hand to do the

         fit up.

 >>>

 Hi Bruce- thanks for the reply.  Understood and agree- this is for

 Trutrak Digiflight. Trutrak was asked the question and replied

 "standard instrument cutout dimensions".  Instruments on order, not in

 hand.

  

 Beginning to think this simple, common dimension must either be secret

 information (I'll have to kill you) or I'm the only one not in the

 Brotherhood...

  

 Mark, looking for number, leaning towards 2-5/8" but not confirmed and

 do not archive

Bruce(at)glasair.org
Guest

Posted: Fri Nov 17, 2006 2:22 pm Post subject: Instrument mounting hole circle

Yes, there are variations. All my screws are countersunk! 



Bruce

www.glasair.org

 



--

Bob Perkinson

Joined: 10 Jan 2006
Posts: 51
Location: Hendersonville, Tennessee

Posted: Fri Nov 17, 2006 7:38 pm Post subject: Instrument mounting hole circle

" the panel is being laid out in  AutoCAD for waterjet cutting"

  

  

 Mark,

 Who are you using to lay out and cut the  panel?

  

 Do Not Archive

  

 

Bob Perkinson

Hendersonville, TN.

RV9 N658RP Reserved

If nothing  changes

Nothing changes

 



 [quote]   

 

    

[b]

Mark Phillips in TN

Joined: 10 Jan 2006
Posts: 431
Location: Columbia, TN

Posted: Fri Nov 17, 2006 8:45 pm Post subject: Instrument mounting hole circle

Hi Bob-

  

 I'm doing the AutoCAD panel layout and have contacted a local waterjet cutter in Nashville about pokin' the holes.  Another builder in the area used him with good results. 

  

  Jet(at)south-tech.us (Jet(at)south-tech.us) (615) 847-8226

  

 Might go to Steve Davis in Memphis who did my previous panel with excellent results.  And the BBQ there is to die for...

  

 http://members.aol.com/panelcut/

  

 Mark



  [quote][b]

_________________
From The PossumWorks...

emrath(at)comcast.net
Guest

Posted: Sat Nov 18, 2006 6:00 pm Post subject: Instrument mounting hole circle

Mark, my friend, as a Lindy Award winner and a Best Metal at Sun-N-Fun, you

know the place to find your answers!   Seek out Bob Nuckolls' and you will

find on his web site a place from which to download the dimensions you seek

either in a AutoCAD format or PDF!  The palace to go is

http://www.aeroelectric.com/Reference_Docs/Panel_Layout! Provided the std.

dimensions of the usual panel instruments.  I used these and

Jet(at)south-tech.us and it has worked out beautifully. If you want to close up

the size of the mounting screw holes to just 0.040" go ahead, as they can be

opened up if required to your screw hole size is needed. 0.040" is the

smallest hole that JetSouth can cut.  This all worked great for me!  Now,

how do you say, Happy Thanksgiving!!!  



Marty in Brentwood TN

      

      

Time:  08:45:11 PM PST US From:  Fiveonepw(at)aol.com Subject:  Re: Instrument

mounting hole circle       

      Hi Bob-

      

      I'm doing the AutoCAD panel layout and have contacted a local waterjet

cutter 

      in Nashville about pokin' the holes.  Another builder in the area used

him 

      with good results. 

      

      Jet(at)south-tech.us (615) 847-8226

      

      Might go to Steve Davis in Memphis who did my previous panel with

excellent 

      results.  And the BBQ there is to die for...

      

      http://members.aol.com/panelcut/

      

      Mark

Display posts from previous:

	Matronics Email Lists Forum Index -> RV-List	All times are GMT - 8 Hours
Page 1 of 1

Jump to:

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum