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  #1  
Old 10-22-2012, 04:49 PM
ArlingtonRV ArlingtonRV is offline
 
Join Date: Feb 2005
Location: Marysville, WA
Posts: 432
Default Fresh Air Vent

I recently purchased a flying RV-4 (and am building another one, just for giggles) that has no means of getting fresh air in with the canopy closed. I noticed in the November Kitplanes in an article by Paul Dye on his RV-3 canopy latch there was a Van's CA LV-3 near the canopy handle. Paul mentioned that it doesn't work well where it is currently located.

While most people don't think of the Pacific Northwet as a place where one needs over large amounts of fresh air it can get down right uncomfortable during those 2 weeks of summer we get. Why, some days it can hit almost 80degrees!

What have others found successful in getting fresh air into a -4, particularly in flight at lower altitides and airspeeds. Has anyone used the RV-12 style flat doors?

Thanks
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  #2  
Old 10-22-2012, 05:24 PM
smokyray's Avatar
smokyray smokyray is offline
 
Join Date: Jan 2005
Location: TX32
Posts: 1,758
Default The air up there...

Quote:
Originally Posted by ArlingtonRV View Post

What have others found successful in getting fresh air into a -4, particularly in flight at lower altitides and airspeeds. Has anyone used the RV-12 style flat doors?Thanks
Good question Steve, been coming up alot over the 20 years I built and flew my RV4. Here is a great thread covering it well. Search "RV Vents" above and a plethora of good information will spring forth...

http://www.vansairforce.com/communit...ight=rv4+vents

V/R
Smokey
Dues gladly paid in Iraq...
Gladly paid to DR anyway...

Last edited by smokyray : 10-22-2012 at 05:27 PM.
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  #3  
Old 10-22-2012, 05:45 PM
Rick RV-4 Rick RV-4 is offline
 
Join Date: Aug 2006
Posts: 226
Default RV-4 cooling

Hi Steve,

I agree, the little vents on the canopy frame don't work well. I went with a NACA duct below each cowl cheek extension connected to a two-inch diameter SCAT hose.

These then route to metal SteinAir vents in a panel between my legs (under the instrument panel). They provide very good airflow, and I usually angle them towards the back if I have a passenger.

Even on 100 degree days (I live in Texas) I always ask my pax how the air is in the back, and I never get a complaint. If I'm solo, I get PLENTY of air.

Cheers,

Rick
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