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  #1  
Old 06-11-2018, 07:45 PM
bob888 bob888 is offline
 
Join Date: Jul 2012
Location: Fresno, CA
Posts: 200
Default Cold air in the rear

I have noticed (actually passengers noticed) quite a bit of cold air coming into the back seat area. It seems to be coming from UNDER the rear cushions. I have boots on the aileron linkages, so probably not from the wing root. Has anyone else noticed this? Source?
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  #2  
Old 06-11-2018, 07:51 PM
BobTurner BobTurner is offline
 
Join Date: Dec 2011
Location: Livermore, CA
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If your doors donít seal perfectly, air will be pulled out of the cabin since the air outside the rounded upper fuselage is at slightly lower pressure. The cabin air is replaced by cold air pulled in from the tail, coming thru the corregated aft bulkhead. Try stuffing insulation into the aft bulkhead corregations, along the edge.
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  #3  
Old 06-12-2018, 07:22 AM
Nukeflyboy Nukeflyboy is offline
 
Join Date: Aug 2007
Location: Granbury, TX
Posts: 92
Default Cold air in the rear

Also cover the lightening holes in the bulkhead just forward of the baggage door. Some cold air manages to work its way in there, too, which a passenger in the left seat can feel.
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  #4  
Old 06-12-2018, 07:35 AM
Kyle Boatright Kyle Boatright is online now
 
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Location: Atlanta, GA
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The thread title had me worried for a moment. ;-)
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2001 RV-6 N46KB
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  #5  
Old 06-12-2018, 08:32 AM
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Plummit Plummit is offline
 
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Location: SoCal
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Quote:
Originally Posted by Kyle Boatright View Post
The thread title had me worried for a moment. ;-)
Sounds like something DR has personal experience with....

-Marc
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  #6  
Old 06-12-2018, 08:48 AM
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Bill Boyd Bill Boyd is offline
 
Join Date: Sep 2006
Location: Landing field "12VA"
Posts: 1,094
Default Exit air??

Talk of closing off the corrugations in the baggage bulkhead make me wonder- we can't have ventilation without an exit for the air - if we close off the obvious connection to the tail cone, where will the air find its way out - and are we choking off airflow to the overall detriment of cabin comfort?

I know from decades of RV-6A ownership that the tail cone "pumps" rather than exhausts air, and my cabin air exit in the 6 with aileron boots is obviously across the longerons underneath the canopy side skirts - my shirt sleeves get sucked into that gap all the time. Not sure in a 10 with well-gasketed doors where the exit air is going to go.

What's the accepted RV-10 best-practice for providing air exit while blocking cold air infil?

Not flying by a long shot, but would sure like to incorporate this in my build now.
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  #7  
Old 06-12-2018, 09:34 AM
rdrcrmatt rdrcrmatt is offline
 
Join Date: Oct 2014
Location: Milwaukee, WI
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I was getting tons of air in from my tail cone, and air was getting sucked out via my door seals. I had terrible heat for a while. I sealed up the doors hinges and it helped a ton. I haven't re-tested to see what direction air is moving around the baggage bulkhead.
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Last edited by rdrcrmatt : 06-12-2018 at 11:02 AM.
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  #8  
Old 06-12-2018, 10:45 AM
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rleffler rleffler is offline
 
Join Date: Jun 2006
Location: Delaware, OH (KDLZ)
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I didn't do anything special per se in my RV-10.

I did put on aileron boots.

I also finished my interior with AeroSport Products panels, plus a couple that Geoff custom made for me. The lower half of the baggage bulkhead has a panel covered in carpet. The upper half panel is covered in leather.

These bulkhead panels fit tight against the standard AeroSport Products interior panels. They seem to do a great job at eliminating drafts. I've not gotten a single complaint.
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  #9  
Old 06-12-2018, 10:52 AM
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Plummit Plummit is offline
 
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Quote:
Originally Posted by rdrcrmatt View Post
I had been working with the understanding that the tail cone is a low pressure area. The corrugations in the baggage bulkhead are to allow air in the higher pressure cabin to exit that way.

The air rushing over the canopy is a lower pressure area as well, and must be lower than the tail cone. If the doors aren't sealed properly the lower pressure area just outside will pull air out the door seals, which will cause the baggage bulkhead "exit" to become an intake.

If this is not correct please let me know so I can edit and remove any misinformation.
Air does indeed come IN the baggage bulkhead from the tail. I can verify (or rather my wife can) that air comes IN around poor fitting door seals.

-Marc
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  #10  
Old 06-12-2018, 11:01 AM
rdrcrmatt rdrcrmatt is offline
 
Join Date: Oct 2014
Location: Milwaukee, WI
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Quote:
Originally Posted by Plummit View Post
Air does indeed come IN the baggage bulkhead from the tail. I can verify (or rather my wife can) that air comes IN around poor fitting door seals.

-Marc

Edited my post.
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