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Continuing on a previous thread, I was at a model shop today buying some .090 plywood (for a glove box to for my right side panel) and came across some small bottles that look ideal for air-water separators in the static lines.  They are small model airplane fuel tanks made of plastic with a tight sealing cap with a couple of holes and small brass tubing to put through the holes.  My plan is to mount the bottles inverted (cap down) immediately above the static ports, with a short brass line to the static port, and a longer brass line extending to the top (bottom) of the inverted bottle that goes to the instruments.  Water can then collect in the bottle and drain back out the way it came in, but the bottle would have to get full to push water into subsequent sections of the line.  I believe that acting as an air-water separator in this way, water is less likely to migrate up the line than if the line alone were used so that alternating water slugs and bubbles could move along the small diameter line in response to wind gusts while the airplane is tied down.  These guys were very pricey: $2.95 each, rectangular (and so easy to mount along the sidewall), light, tough, and available in a variety of sizes.  I chose a pair that are about 3 cubic inches each, larger than the separator bottles in the static lines of our C-182. Fred

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