my filters (one in static line and one in pitot line) are just behind my instruments and should never see moisture.
The filters don't effect calibration, tried and proven for many years our club gliders. We change them every year, at a few of dollars each, no problems. I've never seen any evidence of moisture but I have seen dust in them (very dusty when towing gliders behind a Pawnee on a dirt strip). regards Barry Kruyssen Cairns, Australia RAA 19-3873 k...@bigpond.com http://www.users.bigpond.com/kr2/kr2.htm ----- Original Message ----- From: Orma "a small inline fuel filter to try and prevent any moisture or insects" You can call me cautious Clara if you like, but I see a small problem with the design of a system which uses a fiber filtration product with the hope that it might trap moisture. Moisture and dust will create mud which does not pass pressure very well. Fibers soaked with moisture swell up and don't pass pressure very well. Filtering is a good thing and should be done. In advance of the filter should be a moisture trap which uses a material like Desiccant which will dry the air and show a visible indication that moisture has been present, enabling the pilot to get the system serviced. My KR does not have a moisture system. My pitot and static tubes are simple soft 1/4 in L shaped aluminum tubes. Moisture must be sufficiant to climb up hill 3 inches to get into the tube. then it must climb another 12 inches to get to the instrument. I will only fly in light rain and then only if I can see the other side of it. I could probably use an inline filter. I would be cautious in installing one too low in the system, would not want it to came in contact with moisture. Orma Southfield, MI
