Return-Path: Received: from server18.safepages.com ([216.127.146.7] verified) by logan.com (CommuniGate Pro SMTP 4.1b8) with ESMTP id 2435987 for flyrotary@lancaironline.net; Thu, 19 Jun 2003 14:18:47 -0400 Received: by server18.safepages.com (Postfix, from userid 1012) id 0FB7A6E96A; Thu, 19 Jun 2003 18:16:54 +0000 (GMT) Received: from 2b0w201 (1Cust128.tnt1.pensacola2.fl.da.uu.net [67.248.205.128]) by server18.safepages.com (Postfix) with ESMTP id 946236E816 for ; Thu, 19 Jun 2003 18:16:53 +0000 (GMT) From: "Tommy James" To: "FlyRotary" Subject: Ivo Magnum Pitch Question Date: Thu, 19 Jun 2003 13:19:20 -0500 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2911.0) Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2919.6600 Okay, here is a real test of this groups aeronautical acumen. On the front of my Glastar is a ground adjustable Ivo Magnum (3 blade). The "destructions" advise that it is adjustable from 30" to 90" pitch by turning a large adjustment screw which twists a cam in each blade. This screw has 5 turns stop to stop, or 12" per full turn of the screw. The prop is currently set at ~54" of pitch. I ran the engine this morning to ~4500rpm and 25" MAP. While there was throttle left, the engine did not seem to want to advance from there. The plane was bouncing around like a caged animal... This is new ( and exciting) to someone used to C152s. The test: How would one determine the correct pitch for first flight and what is the guesstimate of what that pitch should be? Regards, Tommy James<>< ps. no further starter problem