Return-Path: Received: from blizzard.wise.edt.ericsson.se (blizzard-ext.wise.edt.ericsson.se [194.237.142.2]) by truman.olsusa.com (Post.Office MTA v3.5.1 release 219 ID# 0-52269U2500L250S0V35) with ESMTP id com for ; Wed, 13 Jan 1999 10:07:38 -0500 Received: from mailserver1.ericsson.se (mailserver1.ericsson.se [136.225.152.91]) by blizzard.wise.edt.ericsson.se (8.9.0/8.9.0/WIREfire-1.2) with ESMTP id QAA24622 for ; Wed, 13 Jan 1999 16:08:57 +0100 (MET) Received: from esealnt141.ericsson.se (esealnt141.ericsson.se [130.100.102.216]) by mailserver1.ericsson.se (8.8.8/8.8.8/eri-1.0) with ESMTP id QAA25854 for ; Wed, 13 Jan 1999 16:10:14 +0100 (MET) Received: by esealnt141 with Internet Mail Service (5.5.2232.9) id ; Wed, 13 Jan 1999 16:05:43 +0100 Message-ID: <01FC42FED6D5D011BF3D00805FBE51AAB833AF@esekint101> From: "Sven Jerlhagen (QCS)" To: "'lancair.list@olsusa.com'" Subject: RE: Fixed pitch prop vs. constant speed Date: Wed, 13 Jan 1999 16:04:46 +0100 X-Mailing-List: lancair.list@olsusa.com Mime-Version: 1.0 <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> << Lancair Builders' Mail List >> <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> >> I'm using a Warnke high aspect ratio 70*76 with a 160 hp O-320. At 120 kts climb is only marginally affected by prop, and from 140 kts climb is only affected by power and weight. At slower speeds the CS perfoms better. A CS prop might give around 5 to 10 kts in cruise. I like the fixed because of lower cost and lower weight. 50 lbs lighter also gives better climb ! Please email me if you like more numbers. Sven SE-XOP