Built Engine Dryer using recommendations per Bill Lane (local builder of RV 7) and several example posts in VAF. This will minimize risk of corrosion inside engine if not run weekly (moisture accumulates from combustion). Will connect the dry air output at Dipstick, with return air captured via Breather. Uses aquarium pump (must be in air tight container itself with only air from Breather connected), to move air through about 2 quarts of desiccant. I'll use white desiccant (lower cost) followed by small container of blue desiccant (color changes when saturated). Small engine fuel filter insures clean air returned to dipstick. I've also been working on 2 Wing Jacks, using 3 Ton hyd rams from Harbor Freight (also per examples in VAF)...pics soon.
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| Tool box services as container. Original plug Lycoming ships engine with used to insert dry air into engine. Return air from Breather. (small red caps keep clean until using) |
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| Aquarium air pump is in air tight container so only return air from engine is cycled. Desiccant container also must be air tight. Blue desiccant in "inline desiccant" vessel to provide indicator when primary "white" desiccant is saturated. Small filter just prior to exit to engine insure "clean" air. |
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| Lots of latex tubing (vinyl will get stiff in colder weather). Pump has 2 outlets, so combined via T fitting. Created distribution box for air inside desiccant container using small plastic box (or drill alum tube, etc) |