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  #1  
Old 08-25-2016, 12:46 PM
dwrichey's Avatar
dwrichey dwrichey is offline
 
Join Date: May 2009
Location: Reedley, California
Posts: 85
Default 3/4 inch inside diameter air vent?

Does anyone have a source or good idea on how I can control airflow through a 3/4 inch scat tube? I want to provide cooling air to the back side of my IPad while flying, so as to prevent it from over-heating. On a RV-8, panel space is limited. The idea is to tap into the normal fresh air vent scat tubing (2" dia.) with a 3/4" scat tube. Then, I'll run the 3/4" scat down to just below the bottom edge of the instrument panel on the far right side and direct the air to the back side of the IPad. But how to control the airflow? Most eyeball vents use 1 3/4 to 2 inch scat tubing. An in-line, plastic ball check valve, would require two handed operation under the panel or some sort of bracket system to hold it. A 3/4" eye ball vent would be ideal. Any ideas?
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  #2  
Old 08-25-2016, 01:43 PM
Larry DeCamp's Avatar
Larry DeCamp Larry DeCamp is offline
 
Join Date: Apr 2010
Location: Clinton, Indiana
Posts: 997
Default Paristaltic valve

Use a soft thinwall collapsible tube to the ipad and a "chip clip" to shut the air off.
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Larry DeCamp
RV-3B flying w/7:1 0320 / carb / Pmags / Catto 3b / digital steam
RV-4 fastback w/ Superior roller 360/AFP/G3X/CPI/Catto3b
Clinton, IN
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  #3  
Old 08-25-2016, 03:21 PM
rv7charlie rv7charlie is offline
 
Join Date: May 2006
Location: Pocahontas MS
Posts: 3,884
Default

Any airliner salvage operations near you? I've seen some pretty small eyeball vents come out of airliners.
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