Todd, My ASI acted similar to yours one day, it turned out to be a split in the pneumatic tubing developing near the instrument. It was very disconcerting but I also had the GPS running so I knew I had a major error. For the most part my ASI/VSI reading have been good.
My pitot and static ports are on the left stub wing - underneath out at the end of the stub. I do get a slight dip in the VSI as I start a climb before it starts to give a positive climb reading, but other than that my ASI has been generally true within a couple mph. Rob Schmitt N1852Z _www.robert7721.com_ (http://www.robert7721.com) Subject: KR> Pitot static port To: kr...@mylist.net Message-ID: <a865.3d978d3f.3c5e5...@aol.com> Content-Type: text/plain; charset="US-ASCII" Gentlemen, I know I saw a thread some time back about where the best place to locate a static port would be, but I can't find much mentioned in the archives except that Mark L. has his about a foot aft of the firewall on both sides. I need to move mine, as I currently have two choices, one inside the cockpit which causes the ASI to read about 30 mph fast at cruise, or one on the wing which will actually let me slow down to zero indicated prior to reaching a stall. Neither of these is acceptable to me, so I am going to put one in the side of the fuselage and try that. A foot aft of the firewall sounds about right, but has anyone come up with a more exact measurement for the ideal spot? Todd Thelin Spanaway, WA
