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Z-bracket height

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matronics(at)cencula.com
Guest

Posted: Sat Nov 04, 2006 5:29 pm Post subject: Z-bracket height

I'm working on my -7A wings and am to the point of drilling the Z-brackets.  

The problem is that the Z-brackets seem to be a little bit too high.  I've 

got about 3/64 gap between the trailing edge of the tank skin and the leading 

edge of the main skin.  Does anyone know if this is normal or will it close 

up when screwing the tank to the spar?  I can close the gap by pressing the 

tank towards the spar with 30-40 lbs of force, but I can see that it flexes 

the baffle slightly in the process.



Thanks,



Mike

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fstringham

Joined: 10 Jan 2006
Posts: 87

Posted: Sat Nov 04, 2006 5:52 pm Post subject: Z-bracket height

Mike



I had this situation. I believe it was Ken at Van's that said a little gap 

creats a better line for paint. He said that when the aft forward skins 

butts up to the forward edge of the aft skins that there is a greater chance 

of the paint cracking along this line. My plane isn't painted yet so I can"t 

verify his claim.I know that some have gone to extordinary lengths to get 

them to butt with no space.



Frank (at) sgu and slc..........wiring / fiberglass /

 	  Quote: 	
		  From: "Michael D. Cencula" <matronics(at)cencula.com>

Reply-To: rv7-list(at)matronics.com

To: rv7-list(at)matronics.com

Subject: Z-bracket height

Date: Sat, 4 Nov 2006 20:27:54 -0500




<matronics(at)cencula.com>



I'm working on my -7A wings and am to the point of drilling the Z-brackets.

The problem is that the Z-brackets seem to be a little bit too high.  I've

got about 3/64 gap between the trailing edge of the tank skin and the 

leading

edge of the main skin.  Does anyone know if this is normal or will it close

up when screwing the tank to the spar?  I can close the gap by pressing the

tank towards the spar with 30-40 lbs of force, but I can see that it flexes

the baffle slightly in the process.



Thanks,



Mike






	


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llsbiii3(at)netzero.net
Guest

Posted: Sun Nov 05, 2006 9:48 am Post subject: Z-bracket height

My left wing tank overlaped the leading edge by about the 3/64, while on the right wing everything is fitting close.  I assemble the entire wing skins with lots of clecos, 50% in skins and 33% in the spars.  I match drilled the right wing skins last night.  With all the clecos in place I can detect no mid wing sag.  This includes using 1/8 clecos in the tank skin to plate-nuts, as they line the tank with everything else.  If you have drilled the tank sking for the screws, perhaps you could put a few in place to see if is makes a diferance.  In my opinion 3/64 pre-paint does not seem like much to me.  I am actually amazed how well all the parts fit. 

Sherman Butler

Idaho Falls

Wings 

do not archive 



From: "Michael D. Cencula" <matronics(at)cencula.com>

Subject: RV7-List: Z-bracket height 

I'm working on my -7A wings and am to the point of drilling the Z-brackets.  

The problem is that the Z-brackets seem to be a little bit too high.  I've 

got about 3/64 gap between the trailing edge of the tank skin and the leading 

edge of the main skin.  Does anyone know if this is normal or will it close 

up when screwing the tank to the spar?  I can close the gap by pressing the 

tank towards the spar with 30-40 lbs of force, but I can see that it flexes 

the baffle slightly in the process.



Thanks,



Mike

 

    [quote][b]

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dhall(at)donka.net
Guest

Posted: Sun Nov 05, 2006 1:14 pm Post subject: Z-bracket height

Try loosening and tightening screws in a different fashion  to get a better fit.  Small variations can be introduced  or resolved during the installation of the screws.   

  

  ******************************************

 Don  Hall                   

  N517DG (registered)   

  rv7 fuselage

  http://rv7.donka.net

 ******************************************

  



   From: owner-rv7-list-server(at)matronics.com  [mailto:owner-rv7-list-server(at)matronics.com] On Behalf Of  llsbiii3(at)netzero.net

Sent: Sunday, November 05, 2006 12:45  PM

To: rv7-list(at)matronics.com

Subject: Z-bracket  height

 

 



My left wing tank overlaped the leading edge by about the 3/64, while on  the right wing everything is fitting close.  I assemble the entire wing  skins with lots of clecos, 50% in skins and 33% in the spars.  I match  drilled the right wing skins last night.  With all the clecos in place I  can detect no mid wing sag.  This includes using 1/8 clecos in the  tank skin to plate-nuts, as they line the tank with everything else.  If  you have drilled the tank sking for the screws, perhaps you could put a few in  place to see if is makes a diferance.  In my opinion 3/64 pre-paint does  not seem like much to me.  I am actually amazed how well all the parts  fit. 

Sherman Butler

Idaho Falls

Wings 

do not archive 



From: "Michael D. Cencula" <matronics(at)cencula.com>

Subject: RV7-List: Z-bracket height 

I'm working on my -7A wings and am to the point of drilling the Z-brackets.  

The problem is that the Z-brackets seem to be a little bit too high.  I've 

got about 3/64 gap between the trailing edge of the tank skin and the leading 

edge of the main skin.  Does anyone know if this is normal or will it close 

up when screwing the tank to the spar?  I can close the gap by pressing the 

tank towards the spar with 30-40 lbs of force, but I can see that it flexes 

the baffle slightly in the process.



Thanks,



Mike

 

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[b]

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g4mech(at)sbcglobal.net
Guest

Posted: Thu Nov 09, 2006 9:24 pm Post subject: Z-bracket height

Is anyone having P-Static issues? Has anyone been putting static wicks on? My gear leg fairings are putting out some serious static that gets into my comms. My ant are just aft of the spar. My leg fairing finishing cuffs are just crap, has anyone used others that are pre made? Thanks  

     

Michael Crawford  

  

--

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tadsargent(at)bellsouth.n
Guest

Posted: Fri Nov 10, 2006 4:44 am Post subject: Z-bracket height

Michael, how were you able to determine the  fairings were the culprit.  My antennae is just before the spar, both comm  and transponder.  I used the Van's fairings and intersections.  I had  RF interference but was caused by the Coax cable being to close to other  wiring.

 Tad Sargent 7A

 [quote]   ---

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g4mech(at)sbcglobal.net
Guest

Posted: Fri Nov 10, 2006 8:23 am Post subject: Z-bracket height

When I remove the cuffs the problem stops. Coax is double sometime triple shielded, I don’t see how you would get any RF through the coax but hey you never know I guess.  

     

Michael Crawford  

  

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