X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from ironmaiden.mail.utexas.edu ([128.83.32.53] verified) by logan.com (CommuniGate Pro SMTP 5.1c.3) with ESMTP id 1352666 for flyrotary@lancaironline.net; Mon, 28 Aug 2006 13:07:17 -0400 Received-SPF: none receiver=logan.com; client-ip=128.83.32.53; envelope-from=mark.steitle@austin.utexas.edu DomainKey-Signature: s=main; d=austin.utexas.edu; c=nofws; q=dns; b=w0KbegypOCys521l+Oh79T3LB/bkOvqpPhyWFgnE6O4Y7gWP2vJiCVRvQYMFak6sI6iDSdHOjakoVEh1TgJnPpVgs8HyhH/1Ohp9Senwut/YF9OvDCuZFF/J/DfHX1WMbVjayWSEH2QbOAFoFmD3AMJxxSuP2alK7t36b1oVujU=; Received: from exb01.austin.utexas.edu (HELO MAIL01.austin.utexas.edu) ([129.116.87.142]) by ironmaiden.mail.utexas.edu with ESMTP; 28 Aug 2006 12:06:37 -0500 X-MimeOLE: Produced By Microsoft Exchange V6.5 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Subject: RE: [FlyRotary] OT: Gardenhose as level Date: Mon, 28 Aug 2006 12:06:37 -0500 Message-ID: <87DBA06C9A5CB84B80439BA09D86E69E057E6D66@MAIL01.austin.utexas.edu> in-reply-to: X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: [FlyRotary] OT: Gardenhose as level Thread-Index: AcbKw3UqBJqSWQzuQCujIMRA5qzrzwAAL/cA From: "Mark R Steitle" To: "Rotary motors in aircraft" Finn, Sounds like you may have a bubble or two in the hose. That could foul up the accuracy. =20 Mark S. -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Finn Lassen Sent: Monday, August 28, 2006 11:59 AM To: Rotary motors in aircraft Subject: [FlyRotary] OT: Gardenhose as level Only vaugely rotary related... I'm driving myself nuts trying to build this thing level to within 1/8=20 to 1/4" ! I'm using a gardenhose, terminating in clear PVC tubing at each end, to=20 get reference points at the four corners. The thing is that the level varies 1/2" or more over hours. One end will be up, 1/2" over where it was an hour ago and the other end down. Then=20 it changes, etc. How can a guy get a reliable reading this way? Is the friction in the hose too big to reliably use this as a level? Do I need to terminate each end in funnels to get bigger ambient pressure? Finn (frustrated)