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Bill & Brendas RV-8 QB
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Date:  11-19-2013
Number of Hours:  1.00
Manual Reference:  
Brief Description:  Fabricate engine dryer for the new lycoming

Fabricated an engine dryer. Got idea from the internet.
Parts: A 2 liter plastic pop bottle (sprite in this case) cleaned and dry
Aquarium pump
plenty of aquarium tubing
Aquarium air stone
Airline fittings
Silica gel desicant beads. Got mine from a gun shop. These turn green when saturated
Rubber stopper that will fit snug in top of oil filler tube
Silicone
Drilled hole in bottle cap and press fit a fitting and attached tube. This is dry air exit
Drilled another hole in back of bottle for another fitting. This is moist air in
Filled bottle about halfway full with silica gel
Inside of bottle cap where the fitting is press fit, Another short line with air stone is attached
Make sure airstone is burried in silica
Plug hole in bottom of airpump and drill another hole in side and press fit a fitting for air input
Air out on pump is already there. Just attach about 6 to 8 feet of tube to it
Drill hole in rubber stopper and add fitting.
Attach line from pump to the stopper
Since pump cover was removed, Add silicone around the cover lip and re attach. Silicone screws
Put rubber stopper in oil filler tube and set bottle and pump on a stand next to engine and plug in.
Dryed air now blows gently into the engine displacing damp air

My set up will also have a tube made that attaches to breather tube on engine and enters thru the back of bottle making a closed system. This and dryer plugs in sparkplug holes should keep this new engine dry or at least slow any rusting during the last stages og this airplane build
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