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  #11  
Old 08-06-2013, 12:08 PM
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Auburntsts Auburntsts is offline
 
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I might be wrong (I’m not flying yet so this hypothetical), but I’m of the opinion that one NACA scoop is sufficient to provide air to the entire overhead console and it’s potentially how you distribute the air which can drive the one vs two scoop decision. In my case I built a manifold/ducts into my console that delivers air to each of my 4 eyeball vents as I did not want to pressurize the entire console. I also went with only one scoop and no valve/controller. We’ll see how this works in reality.
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Last edited by Auburntsts : 08-07-2013 at 09:17 AM.
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  #12  
Old 08-06-2013, 12:34 PM
jwilbur jwilbur is offline
 
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Quote:
Originally Posted by Auburntsts View Post
I might be wrong (I?m not flying yet so this hypothetical), but I?m of the opinion that one NACA scoop is sufficient to provide air to the entire overhead console and it?s potentially how you distribute the air which can drive the one vs two scoop decision. In my case I built a ?manifold? into my console that delivers air to each of my 4 eyeball vents as I did not want to pressurize the entire console. I also went with only one scoop and no valve/controller. We?ll see how this works in reality.
I like the sound of this. I wonder if anyone else who's flying has done it this way and can give a report.
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  #13  
Old 08-06-2013, 03:41 PM
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Bill.Peyton Bill.Peyton is offline
 
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I have been flying since winter, and I can tell you that I am glad I put in 2 NACA inlets. I do not have the controller and just pressurize the OH console. This winter I could feel a slight amount of air leaking around the rocker switches mounted in the OH. Not enough leaks to be an issue. I did use the Steinair eyeballs, which don't let anything pass through when closed. If I did it over, I wou ld not change a thing. IMHO you can never have enough fresh air for passengers!
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  #14  
Old 08-06-2013, 09:57 PM
aerhed aerhed is offline
 
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I built ducts into the accuracy console on my last one. No stray airflow. Console is also removable. I made the ducts from cardboard and glass/resin. Molt Taylor style.
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  #15  
Old 08-07-2013, 08:48 AM
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Aerosport1 Aerosport1 is offline
 
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I have 400 hours now with dual NACA vents that pressurize the overhead console. It works very good and you do get some airflow when taxiing. One
NACA will work but 2 is better if you want more airflow especially at lower air speeds in the patterns or taxiing. As for the controller valve I flew for 3 months
without it. I felt it was not needed at the time. Then one day flying in the winter here in Ohio I felt the cabin was quite cold and I noticed the overhead was very cold too touch. After that I installed the controller and now in the winter you can shut the entire overhead off and the cabin is much warmer. Also it is nice to adjust the valve so you can open all the vents wider and get a bigger smoother airflow stream and adjust with the controller.
Also try shutting down the rear vents sometime when someone left them wide open in the rear seat area. With the controller it is very easy. Just my observation after 400 hrs. I would do it the same if building another 10.
FWIW

Geoff
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  #16  
Old 08-07-2013, 09:28 AM
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Auburntsts Auburntsts is offline
 
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Originally Posted by Aerosport1 View Post
Also try shutting down the rear vents sometime when someone left them wide open in the rear seat area.
Excellent point. Not enough, by itself, to sway me on the purchase of the controller (of course I reserve the right to reverse myself once I'm flying ), but it's enough to make me add checking the status of the rear vents to my preflight checklist.
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  #17  
Old 08-07-2013, 09:51 AM
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Todd not trying to sell you anything or a control valve just trying to give you some good information from someone who has been flying the RV-10 for 400 hrs
and my observations and experiences.

Geoff
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  #18  
Old 08-07-2013, 10:36 AM
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Auburntsts Auburntsts is offline
 
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Quote:
Originally Posted by Aerosport1 View Post
Todd not trying to sell you anything or a control valve just trying to give you some good information from someone who has been flying the RV-10 for 400 hrs
and my observations and experiences.

Geoff
Oh I know -- you're a good egg and make some really good products and provide outstanding support. I'm really just pointing out there's more than one solution to the problem. And like I said, I may end up with a controller and 2 scoops before it's all said and done, but I'm going to try a minimalist approach first. If I find it lacking, I can easily add another scoop and/or a controller to my present setup.
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  #19  
Old 05-04-2017, 02:54 PM
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Bill Boyd Bill Boyd is offline
 
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Quote:
Originally Posted by Auburntsts View Post
I might be wrong (I?m not flying yet so this hypothetical), but I?m of the opinion that one NACA scoop is sufficient to provide air to the entire overhead console and it?s potentially how you distribute the air which can drive the one vs two scoop decision. In my case I built a manifold/ducts into my console that delivers air to each of my 4 eyeball vents as I did not want to pressurize the entire console. I also went with only one scoop and no valve/controller. We?ll see how this works in reality.
how this ended up for you, Todd. Did you install one NACA duct or two? Did you get a controller from Geoff? Are you happy with your setup or would you change anything?
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  #20  
Old 05-04-2017, 03:03 PM
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Auburntsts Auburntsts is offline
 
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Quote:
Originally Posted by Bill Boyd View Post
how this ended up for you, Todd. Did you install one NACA duct or two? Did you get a controller from Geoff? Are you happy with your setup or would you change anything?
I ended up with just the one NACA scoop and no controller. In flight the one scoop provides plenty of air and the eyeball vents control the flow without problems -- on the ground the flow is pretty anemic but for me it's not a big deal. I'm happy and wouldn't change my setup.
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