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  #11  
Old 10-18-2012, 03:23 PM
SteinAir SteinAir is offline
 
Join Date: Feb 2005
Location: Minneapolis
Posts: 2,444
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Quote:
Originally Posted by grayforge View Post
Anyone have a machined aluminum vent they'd like to weigh and I'll weight a plastic one from Vans? It'd be nice to get a few different options:

Vans Aluminum vent
Stein's Aluminum vent
Kestrel Air's Aveo ball vent

Please mention the size of the vent.

Thanks!
Russ
I went and weighed them for you:

Van's plastic vent: .261 Lb
SteinAir large metal vents: .369 Lb
SteinAir small metal vents: .129 Lb

Also note that not all vents are created equal, just because there are other "metal ones" out there, they are not necessarily as good. The Vans products and our products are a known quality (and known price).

Anyway, that's the info I have for now!

Cheers,
Stein
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  #12  
Old 10-18-2012, 03:47 PM
Bob Axsom Bob Axsom is offline
 
Join Date: Mar 2005
Posts: 5,685
Default I bought the plastic ones from Van's then the the aluminum ones from Vans

I bought the plastic ones from Van's then the aluminum ones from Vans. I had no great problem with the plastic ones but the leaking air does cause drag. The aluminum ones seem better but I finally went to solid metal inserts to close the NACA inlet for racing. I can't wait to land and remove them because it is not a nice place to be when they're in unless you are trying to win.

Bob Axsom
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  #13  
Old 10-19-2012, 10:57 AM
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grayforge grayforge is offline
 
Join Date: Dec 2011
Location: Kirkland, WA
Posts: 874
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Awesome! Thanks for the numbers Stein. I'm surprised at how close they are. I think it'll be worth the slightly added weight to have the higher quality look and function.

I updated my previous post (#10) with these numbers.
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Last edited by grayforge : 10-19-2012 at 11:00 AM.
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  #14  
Old 10-19-2012, 06:41 PM
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rzbill rzbill is offline
 
Join Date: Nov 2005
Location: Asheville, NC
Posts: 2,452
Default Plugs for the plastic vents

I made a set of winter plugs for the stock Vans plastic vents.
They work. I keep them in the glovebox.
Webpage showing the plugs
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Bill Pendergrass
RV-7A: Flying since April 15, 2012. 650hrs
YIO-360-M1B, mags, CS, GRT EX and WS H1s & A/P, Navworx
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  #15  
Old 10-20-2012, 04:50 PM
echoooo echoooo is offline
 
Join Date: Aug 2012
Location: Riviere-du-Loup, Quebec
Posts: 5
Default Air vent doors

Hi you all.
Someone experimented a good door or plug to close the outside air intake trap which feed air vent, to keep the water out when you wash the plane or the cold air out for winter. I know I can put a plastic tape on it but I think it will peel the paint off on removal.

Alain
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  #16  
Old 10-20-2012, 11:50 PM
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Buggsy2 Buggsy2 is offline
 
Join Date: Jul 2008
Location: NorCal
Posts: 565
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Quote:
Originally Posted by jacksel View Post
Are there better vent outlets available than the one's that come with the kit? It's difficult to get them to where they don't leak.
They have instructions how to seal them with RTV; that method doesn't work?
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  #17  
Old 10-22-2012, 08:07 AM
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LettersFromFlyoverCountry LettersFromFlyoverCountry is offline
 
Join Date: Jan 2005
Location: St. Paul, MN.
Posts: 4,671
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For the winter, I was just going to put some packing tape over the air inlets on the fuse. That should take care of the leaks.
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St. Paul, MN.
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  #18  
Old 12-26-2012, 10:24 PM
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grayforge grayforge is offline
 
Join Date: Dec 2011
Location: Kirkland, WA
Posts: 874
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Quote:
Originally Posted by SteinAir View Post
I went and weighed them for you:

Van's plastic vent: .261 Lb
SteinAir large metal vents: .369 Lb
SteinAir small metal vents: .129 Lb

Also note that not all vents are created equal, just because there are other "metal ones" out there, they are not necessarily as good. The Vans products and our products are a known quality (and known price).

Anyway, that's the info I have for now!

Cheers,
Stein
Again, thanks for the info Stein.

Can you describe pros & cons for the 2 sizes you carry? I did a bit of math and came up with the following opening areas:
1 1/4 vents: 1.23 sq in opening
1 5/8 vents: 2.10 sq in opening

So the larger vents have more than 50% more area. Significant? I'd think the noise difference wouldn't be much since the cockpit's pretty loud anyway, but I'd love to hear more actual experiences. Anyone else have comparisons?

Also, I don't see a Plenum Cup in the photos for the smaller vents. Do they not have one? Does this make scat tube attachment a little less secure than the nice beaded end of the plenum cups on the larger vents?

Thanks!
Russ
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  #19  
Old 01-19-2013, 12:55 AM
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grayforge grayforge is offline
 
Join Date: Dec 2011
Location: Kirkland, WA
Posts: 874
Default Stein Vents Installed

I recently received the large Stein Air Vents. As mentioned by others, they are quite nice! I did a quick experiment and tried breathing through both the stock Vans vents and Stein's while they were closed. I could breathe through the plastic Vans vents no problem. With the Stein vents, I'd suffocate.

So I just finished installing these. Pretty straight forward. Starting with a cardboard template, cut a mounting plate from .063 sheet that would fit between an angle bracket mounted to the 4 holes in the fuselage side skin and the instrument panel, punched a hole in this plate, cut a clearance notch in each lower corner of the panel and drilled an extra screw hole in the panel.

For the mounting plate, I added a doubler on the inboard side so the vent 'plenum' sits evenly when screwed down, equaling the thickness of the outboard side that has the angle bracket.

Here are a few photos:

Mounting Plates cut out and punched


Angle bracket and doubler


Mounting Plate Assembly together




Mounted on panel


Back side


View of both
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  #20  
Old 01-19-2013, 03:34 AM
gasman gasman is offline
 
Join Date: Mar 2007
Location: Sonoma County
Posts: 3,341
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Quote:
Originally Posted by LettersFromFlyoverCountry View Post
For the winter, I was just going to put some packing tape over the air inlets on the fuse. That should take care of the leaks.
Just take 2 business cards and slide them in 1/2 way on each side of the open valve and then close the valve..............
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