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Location for the NACA cockpit vent?

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deglass1(at)aol.com
Guest

Posted: Sat Apr 15, 2006 6:09 pm Post subject: Location for the NACA cockpit vent?

As sort of a survey for the list of XL kit builders:

I'm preparing to install the NACA cockpit air vent (6B20-4) just behind 

the firewall, between the second and third stiffeners per the plans.  

In that location, the vent appears to be close interference for the 

outside foot on the pedals on each side, even with my size-10 shoe as a 

trial fit.  I noticed on XLs at Sun'n Fun that some were placed per 

plans, but the commercially finished XLs (AMD) had the vents higher and 

farther aft, as do about half the XLs in the Zenith albums.

Do any of you have the higher location, and anyone who built per plans 

wish you had placed the vents higher and more aft?  Or is the plans 

location not in the way after all?



Thanks, and I enjoyed meeting some of you at the BBQ!



David G

Forest (near Lynchburg) VA

nfivesl(at)yahoo.com
Guest

Posted: Sat Apr 15, 2006 6:39 pm Post subject: Location for the NACA cockpit vent?

I put mine here and so far it hasn't run into anything

and allows for installation of my BRS harness:



http://www.cooknwithgas.com/4_1_06_Kitplanes.JPG



--- deglass1(at)aol.com wrote:



 	  Quote: 	
		   

 

 As sort of a survey for the list of XL kit builders:

 I'm preparing to install the NACA cockpit air vent

 (6B20-4) just behind 

 the firewall,

jeffrey_davidson(at)earth
Guest

Posted: Sat Apr 15, 2006 8:16 pm Post subject: Location for the NACA cockpit vent?

David Wrote

" I'm preparing to install the NACA cockpit air vent (6B20-4) just behind 

the firewall, between the second and third stiffeners per the plans.  

In that location, the vent appears to be close interference for the 

outside foot on the pedals on each side, ..."



I installed mine in the location between the 2nd and 3rd L stiffener.  It

now is a sharp turn to put in the tubing to the eyeball vent in the panel,

or even to in a triangle shaped addition below the panel.  Higher would be

better if you will use tubing to move the air to a "remote" eyeball vent.  



N601VA has the eyeball part directly on the vent.  You have to reach down

and move it.  Of course, that is always after you have tightened the

seatbelt!  



Where you put the vent is partially determined by where you want the air to

come out in the cockpit, as much as by the aerodynamics of the vent itself.



Jeff Davidson

Daniel Vandenberg

Joined: 16 Apr 2006
Posts: 22

Posted: Sun Apr 16, 2006 6:09 am Post subject: Re: Location for the NACA cockpit vent?

[quote="nfivesl(at)yahoo.com"]I put mine here and so far it hasn't run into anything

and allows for installation of my BRS harness:



http://www.cooknwithgas.com/4_1_06_Kitplanes.JPG

Scott...



I think we've caught you daydreaming about the RV-9A in the latest Kitplanes    



Dan

Gig Giacona

Joined: 10 Jan 2006
Posts: 1416
Location: El Dorado Arkansas USA

Posted: Mon Apr 17, 2006 1:03 pm Post subject: Re: Location for the NACA cockpit vent?

Since we're on the subject of the NACA vent does anybody have a template for the cutout for the one that Zenith supplies?

_________________
W.R. "Gig" Giacona
601XL Under Construction
See my progress at www.peoamerica.net/N601WR

webmaster(at)upac.ca
Guest

Posted: Mon Apr 17, 2006 1:52 pm Post subject: Location for the NACA cockpit vent?

GIg, here you go!



http://www.zenithair.com/pdf-doc/airvent-601.pdf

Trev Page

C-IDUS 601HD R912

On Apr 17, 2006, at 5:03 PM, Gig Giacona wrote:



 	  Quote: 	
		   



 Since we're on the subject of the NACA vent does anybody have a  

 template for the cutout for the one that Zenith supplies?



 --------

 W.R. Gig Giacona

 601XL Under Construction

 See my progress at www.peoamerica.net/N601WR





 Read this topic online here:



 http://forums.matronics.com/viewtopic.php?p=28984#28984

craig(at)craigandjean.com
Guest

Posted: Mon Apr 17, 2006 3:21 pm Post subject: Location for the NACA cockpit vent?

That outline is for when you build your own ducting out of metal. If you

have the factory-supplied plastic ones make sure the outlines match.



-- Craig



--

larry(at)macsmachine.com
Guest

Posted: Mon Apr 17, 2006 3:32 pm Post subject: Location for the NACA cockpit vent?

Gig,

I see the drawing was posted for the Zenith NACA vent.  You can take it 

just a step or so further to an inexpensive

directable air vent from a car as seen in the links below.

http://www.macsmachine.com/images/largeassembly2/full/NACAvent.gif

http://www.macsmachine.com/images/largeassembly2/full/outletventright.gif

http://www.macsmachine.com/images/largeassembly2/full/NACAvent.gif

Pivots both ways and works like a charm.  In the cold winter months, I 

put a piece of

foam in the rear of the NACA vent opening to seal it completely.

Good luck,



Larry McFarland - 601HDS at www.macsmachine.com

Gig Giacona wrote:



 	  Quote: 	
		  



Since we're on the subject of the NACA vent does anybody have a template for the cutout for the one that Zenith supplies?



--------

W.R. Gig Giacona

601XL Under Construction

See my progress at www.peoamerica.net/N601WR

webmaster(at)upac.ca
Guest

Posted: Mon Apr 17, 2006 4:15 pm Post subject: Location for the NACA cockpit vent?

Gig, I actually opted for the Vans kit which gives you the eyeball  

vents, hoses and NACA ducts. Total was about $60 for both sides and  

worked out really good. Glad I did, it gets very hot under that  

canopy and the eyeball vents make it very easy to control  

temperatures when flying.



Trev Page

C-IDUS 601HD R912

On Apr 17, 2006, at 5:03 PM, Gig Giacona wrote:



 	  Quote: 	
		   



 Since we're on the subject of the NACA vent does anybody have a  

 template for the cutout for the one that Zenith supplies?



 --------

 W.R. Gig Giacona

 601XL Under Construction

 See my progress at www.peoamerica.net/N601WR





 Read this topic online here:



 http://forums.matronics.com/viewtopic.php?p=28984#28984

pfranke(at)tpg.com.au
Guest

Posted: Tue Apr 18, 2006 2:30 am Post subject: Location for the NACA cockpit vent?

Trev,



With the Vans eyeball vents, how well do u find that they work? I've heard

rumours that the plastic type supplied don't seal well when closed.



Cheers,

Peter Franke



---

webmaster(at)upac.ca
Guest

Posted: Tue Apr 18, 2006 3:01 am Post subject: Location for the NACA cockpit vent?

Peter, they seem fine to me. I fly in warm weather most of the time  

so I tend to use them. If I recall they might leak a little bit but  

it's never bothered me. Michel Therien has them as well and he's done  

more flying then me so perhaps he can chime in on this.



Trev Page

C-IDUS 601HD R912

On Apr 18, 2006, at 6:27 AM, Peter Franke wrote:



[quote] 



 Trev,



 With the Vans eyeball vents, how well do u find that they work?  

 I've heard

 rumours that the plastic type supplied don't seal well when closed.



 Cheers,

 Peter Franke



 ---

Gig Giacona

Joined: 10 Jan 2006
Posts: 1416
Location: El Dorado Arkansas USA

Posted: Tue Apr 18, 2006 6:07 am Post subject: Re: Location for the NACA cockpit vent?

I had always planned to duct the vent and add an eyeball to direct the air. Acctually my plan is to put a valved Y behind the eyeball so the same vent would be used for both cabin heat and "cold" air.



I'll check this weekend and see if the cutout for the metal "HD" vent is the same as the plastic and report back.

_________________
W.R. "Gig" Giacona
601XL Under Construction
See my progress at www.peoamerica.net/N601WR

Trainnut01(at)aol.com
Guest

Posted: Tue Apr 18, 2006 7:08 am Post subject: Location for the NACA cockpit vent?

Peter, I had the problem you describe on my RV7A. The plastic eyeballs  from 

Van's do not close well at all. I replaced them with aluminum eyeballs from  

Affordable Panels, these seal completely but are very expensive.

Carroll Jernigan

 

do not archive

craig(at)craigandjean.com
Guest

Posted: Tue Apr 18, 2006 11:20 am Post subject: Location for the NACA cockpit vent?

Vans also sells the (expensive} all-metal eyeball vents:



http://www.vansaircraft.com/cgi-bin/catalog.cgi?ident=1145387743-78-363&brow

se=heatvent&product=sv-6



Or as a tiny URL: http://tinyurl.com/pqajz



SteinAir is promising a cheaper all-metal solution:



http://www.steinair.com/eyeballvents.htm



-- Craig

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