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center spar upgrade 6ZU 3-2

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chris Sinfield

Joined: 28 Nov 2006
Posts: 270
Location: Sydney Australia

Posted: Tue Aug 31, 2010 3:54 am Post subject: center spar upgrade 6ZU 3-2

Hi gang

can someone please shoot me a picture of how this piece sits against the side of the fuselage skin and around the rear spar upright. I am a bit confused .



Does it sit fully next to the skin between the upright at the undercarriage and the rear spar upright 



or 



Does it go between the skin and upright at the back but at the front section you have side skin/spar upright/ 6zu3-2 and then the bracket 6B10-4 over the lot.

Chris..

the Zenith Aero video was not clear  on this and the photo guide shows it going behind both I think..



a photos worth a thousand words



Chris

Zodiac XLB

Sydney

DaveG601XL

Joined: 27 Oct 2006
Posts: 351
Location: Cincinnati, Oh

Posted: Tue Aug 31, 2010 6:33 am Post subject: Re: center spar upgrade 6ZU 3-2

Chris,



I installed it per your first assumption.  I placed 6ZU3-2 against the skin and under all surrounding uprights and stiffeners.  Picture attached.



Good luck,

Upgrade_19.jpg

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_________________
David Gallagher
Cincinnati, OH area

Afterfxllc(at)aol.com
Guest

Posted: Tue Aug 31, 2010 7:00 am Post subject: center spar upgrade 6ZU 3-2

Hey David did you change your aft uprights also?

  

 Jeff

  

  In a message dated 8/31/2010 10:35:33 A.M. Eastern Daylight Time,  david.m.gallagher(at)ge.com writes:

  	  Quote: 	
		  http://forums.matronics.com//files/upgrade_19_113.jpg

	


  [quote][b]

DaveG601XL

Joined: 27 Oct 2006
Posts: 351
Location: Cincinnati, Oh

Posted: Tue Aug 31, 2010 7:53 am Post subject: Re: center spar upgrade 6ZU 3-2

Jeff,



My aft upright is still the original one.

_________________
David Gallagher
Cincinnati, OH area

Ron Lendon

Joined: 10 Jan 2006
Posts: 685
Location: Clinton Twp., MI

Posted: Tue Aug 31, 2010 6:15 pm Post subject: Re: center spar upgrade 6ZU 3-2

FWIW, I puzzled over this also and called Caleb at Zenith.  Here is a picture of the outcome of that conversation on mykitlog.



http://mykitlog.com/users/display_log.php?user=rlendon&project=780&category=0&log=101653&row=7



I was able to drive the part up from below, the most puzzling part was did the verticle spar get sandwiched or not.  Caleb and I agreed that it should be sandwiched.



I noticed Dave made it the other way, and I'm sure it's fine that way also.  I just think, and Caleb agreed, the sandwiched joint it makes a stronger junction.

_________________
Ron Lendon
WW Corvair with Roy's Garage 5th bearing
CH 601 XLB
N601LT - Flying
http://www.mykitlog.com/rlendon
Corvair Engine Prints:
https://sites.google.com/site/corvairenginedata/

chris Sinfield

Joined: 28 Nov 2006
Posts: 270
Location: Sydney Australia

Posted: Tue Aug 31, 2010 11:41 pm Post subject: Re: center spar upgrade 6ZU 3-2

Thanks Ron and Dave



its a bit clearer now. my only thought was the bulge due thickness of new 3-2,pushing out the side skin of the fuse as you we are still using our existing rear spar upright & bolt holes.



Was this a problem?



on the Zenith builders photos it shows the ZU-3-2  as inside the Spar upright and the spar upright contacting the side skin? go figure..



Chris

DaveG601XL

Joined: 27 Oct 2006
Posts: 351
Location: Cincinnati, Oh

Posted: Wed Sep 01, 2010 6:50 am Post subject: Re: center spar upgrade 6ZU 3-2

Chris,



As far as your concern about a bulge in the side skin, each airplane will have it's own best solution.  In my case, adding both pieces under the upright seemed to fit better.  It can certainly go either way.  As far as a sandwiched joint making for a stronger upright, that could be, but I will not lose any sleep over it.  A sandwich with 6B10-4 is only a one rivet sandwich.  All this talk of sandwiches is making me hungry.  Let's fly out for lunch!



Good luck,

_________________
David Gallagher
Cincinnati, OH area

Scotsman

Joined: 27 Aug 2007
Posts: 89
Location: Johannesburg, South Africa

Posted: Wed Sep 01, 2010 9:50 am Post subject: Re: center spar upgrade 6ZU 3-2

I also didn't sandwich the joint.  It didn't feel right and like someone said earlier it is only a one rivet sandwich which I sincerely doubt adds much strength.

_________________
Cell +27 83 675 0815

ggower_99(at)yahoo.com
Guest

Posted: Wed Sep 01, 2010 12:42 pm Post subject: center spar upgrade 6ZU 3-2

The important thing to have in mind is that has to "make" a reinforced structure,  the more area it touches the better...  



Gary.



--- On Wed, 9/1/10, chris Sinfield <chris_sinfield(at)yahoo.com.au> wrote:

 	  Quote: 	
		  

From: chris Sinfield <chris_sinfield(at)yahoo.com.au>

Subject: Re: center spar upgrade 6ZU 3-2

To: zenith601-list(at)matronics.com

Date: Wednesday, September 1, 2010, 3:41 AM



--> Zenith601-List message posted by: "chris Sinfield" <[url=/mc/compose?to=chris_sinfield(at)yahoo.com.au]chris_sinfield(at)yahoo.com.au[/url]>



Thanks Ron and Dave



its a bit clearer now. my only  thought was the bulge due thickness of new 3-2,pushing out the side skin of the fuse as you we are still using our existing rear spar upright & bolt holes.



Was this a problem?



on the Zenith builders photos it shows the ZU-3-2  as inside the Spar upright and the spar upright contacting the side skin? go figure..



Chris





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         [quote][b]

Afterfxllc(at)aol.com
Guest

Posted: Thu Sep 02, 2010 4:34 pm Post subject: center spar upgrade 6ZU 3-2

Are they 40 or .063? They look like the .040 but hard to tell from the  photo.

  

 Jeff

  

  In a message dated 8/31/2010 11:55:34 A.M. Eastern Daylight Time,  david.m.gallagher(at)ge.com writes:

  	  Quote: 	
		  -->    Zenith601-List message posted by: "DaveG601XL"    <david.m.gallagher(at)ge.com>



Jeff,



My aft upright is still    the original one.



--------

David Gallagher

601 XL/Jabiru    3300

First flight 7/24/08

Upgraded 3/19/10

150+ hours and    climbing!





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