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Wing Spar Assembly Drawing 6W3, number of hat stiffeners ?

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maarten.versteeg(at)swri.
Guest

Posted: Sun Jan 21, 2007 1:13 pm Post subject: Wing Spar Assembly Drawing 6W3, number of hat stiffeners ?

I am confused about the number of hat stiffeners specified in the

main spar according to the latest 601XL drawings.

In item 1, on the top view of the wing spar web four hat stiffeners

are shown, on both the from view of the web and the whole spar only

3 hat stiffeners are shown. Also the description for the hat

stiffeners in item 8 lists 4 short ones and TWO long ones. So how

many hat stiffeners does the spar need to have? The rules say:

when in doubt follow the drawings, but the drawings don't seem to

be consistent here. I am scratch building the wings so I don't have

a pre-fab spar delivered, is there a kit builder who remembers his

spars ?



Maarten Versteeg  San Antonio

601XL part kit part scratch

working on the wings

ter_turn(at)yahoo.com
Guest

Posted: Sun Jan 21, 2007 1:57 pm Post subject: Wing Spar Assembly Drawing 6W3, number of hat stiffeners ?

Maarten,

   

  You need four (two short-two long) hat stiffeners for each spar

   

  Terry Turnquist

  601XL-Plans

  St. Peters, MO



Maarten Versteeg <maarten.versteeg(at)swri.org> wrote:

  [quote]--> Zenith-List message posted by: Maarten Versteeg 



I am confused about the number of hat stiffeners specified in the

main spar according to the latest 601XL drawings.

In item 1, on the top view of the wing spar web four hat stiffeners

are shown, on both the from view of the web and the whole spar only

3 hat stiffeners are shown. Also the description for the hat

stiffeners in item 8 lists 4 short ones and TWO long ones. So how

many hat stiffeners does the spar need to have? The rules say:

when in doubt follow the drawings, but  Never Miss an Email

Stay connected with Yahoo! Mail on your mobile. [url=http://us.rd.yahoo.com/evt=43909/*http://mobile.yahoo.com/services?promote=mail]Get started![/url] [quote][b]

Jaybannist(at)cs.com
Guest

Posted: Sun Jan 21, 2007 2:35 pm Post subject: Wing Spar Assembly Drawing 6W3, number of hat stiffeners ?

Maarten,



I don't remember, but I have extensive photos taken during construction.  I have looked at the photos of both wings and I don't see the last (outboard) hat channel, the one that is shown on the plan view of the spar web.  I can see three others, two short inboard ones and one long one at about mid span, as shown on the "front View.".  Hope this helps.



Jay in Dallas



Maarten Versteeg <maarten.versteeg(at)swri.org> wrote:



 	  Quote: 	
		  



I am confused about the number of hat stiffeners specified in the

main spar according to the latest 601XL drawings.

In item 1, on the top view of the wing spar web four hat stiffeners

are shown, on both the from view of the web and the whole spar only

3 hat stiffeners are shown. Also the description for the hat

stiffeners in item 8 lists 4 short ones and TWO long ones. So how

many hat stiffeners does the spar need to have? The rules say:

when in doubt follow the drawings, but the drawings don't seem to

be consistent here. I am scratch building the wings so I don't have

a pre-fab spar delivered, is there a kit builder who remembers his

spars ?



Maarten Versteeg  San Antonio

601XL part kit part scratch

working on the wings

Jaybannist(at)cs.com
Guest

Posted: Sun Jan 21, 2007 2:40 pm Post subject: Wing Spar Assembly Drawing 6W3, number of hat stiffeners ?

Maarten,



You may need four, but as I said in my previous post, the kit-supplied spars only have three.



Jay in Dallas

Do not archive

Terry Turnquist <ter_turn(at)yahoo.com> wrote:



 	  Quote: 	
		  Maarten,

   

  You need four (two short-two long) hat stiffeners for each spar

   

  Terry Turnquist

  601XL-Plans

  St. Peters, MO



Maarten Versteeg <maarten.versteeg(at)swri.org> wrote:

  



I am confused about the number of hat stiffeners specified in the

main spar according to the latest 601XL drawings.

In item 1, on the top view of the wing spar web four hat stiffeners

are shown, on both the from view of the web and the whole spar only

3 hat stiffeners are shown. Also the description for the hat

stiffeners in item 8 lists 4 short ones and TWO long ones. So how

many hat stiffeners does the spar need to have? The rules say:

when in doubt follow the drawings, but the drawings don't seem to

be consistent here. I am scratch building the wings so I don't have

a pre-fab spar delivered, is there a kit builder who remembers his

spars ?



Maarten Versteeg San Antonio

601XL part kit part scratch

working on the wings



 

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Stay connected with Yahoo! Mail on your mobile. Get started!

TxDave

Joined: 22 Jul 2006
Posts: 168
Location: Temple, TX

Posted: Sun Jan 21, 2007 10:59 pm Post subject: Re: Wing Spar Assembly Drawing 6W3, number of hat stiffeners

Page 6-K-0 of the plans shows the dimensions and spar layout for the standard tanks. There are 2 long and 2 short hat stiffeners specified in the plans for the standard tanks. Page 6-W-3 shows the spar configuration for the long range tanks which specifies 2 short and 1 long stiffeners. Note that the location of LNRA#4 is different for the standard tanks. I think ZAC should have put the drawings for the standard tanks on 6-W-3 and the optional long range tanks on page 6-K-0. That seems to be more logical, to me.



Dave Clay

http://www.daves601xl.com

maarten.versteeg(at)swri.
Guest

Posted: Mon Jan 22, 2007 7:12 am Post subject: Wing Spar Assembly Drawing 6W3, number of hat stiffeners ?

Thanks Dave, Jay, Paul,



Yes, I should have compared the 6W3 drawing with the 6K0

drawing, that shows where the confusion started.

I agree that Zenith probably even managed to confuse themselves

with the standard and long range options. I am planning to go

with the 15 gallon (long range) tanks. This almost seems to be

the standard option (unless you want to save money), Zenith

seems to be half-way converting to this, as evident from the

mixed up drawings.



Regards,

	Maarten

chris Sinfield

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

Posted: Tue Jan 23, 2007 3:13 pm Post subject: Re: Wing Spar Assembly Drawing 6W3, number of hat stiffeners

hi all

When I got the kit I also ordered the long range tanks. When my spars were unwrapped they had the extra hat stiffner as per the Std fuel tanks. 



I spoke to Zenith and they said to just cut the extra one off.

Chris.

Tim Juhl

Joined: 21 Mar 2006
Posts: 488
Location: "Thumb" of Michigan

Posted: Tue Jan 23, 2007 4:29 pm Post subject: Re: Wing Spar Assembly Drawing 6W3, number of hat stiffeners

Chris - I'm sure Zenith told you to cut off the extra "L" not a hat stiffener.   15 gallon tanks take up more room in the leading edge so nose rib # 4 is mounted further outboard.  I had the same question as to what to do about removing it and they said cutting it off was better than drilling out the rivets holding it on.   It gives the spar a little extra strength.   The hat stiffeners in question are something else entirely, and my factory built spar has only three.   The outboard one shown on the drawing is absent.



Tim

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Jaybannist(at)cs.com
Guest

Posted: Tue Jan 23, 2007 5:36 pm Post subject: Wing Spar Assembly Drawing 6W3, number of hat stiffeners ?

Chris,



That's strange.  My spars (for long range tanks) came without the "extra" hat channel, but they did have an extra vertical angle (for nose ribs) that had to be cut off.



Jay in Dallas

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



 	  Quote: 	
		  



hi all

When I got the kit I also ordered the long range tanks. When my spars were unwrapped they had the extra hat stiffner as per the Std fuel tanks. 



I spoke to Zenith and they said to just cut the extra one off.

Chris.





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Ron Lendon

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

Posted: Tue Jan 23, 2007 11:31 pm Post subject: Re: Wing Spar Assembly Drawing 6W3, number of hat stiffeners

I called Zenith about this as I was making my spars.  I have the 15 gal tanks and 4 hat sections per the 6K0 plans.  I just makes sense to have the added strength and Zenith agreed.

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