X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from nk11p08mm-asmtp002.mac.com ([17.158.58.247] verified) by logan.com (CommuniGate Pro SMTP 6.0) with ESMTP id 5950986 for flyrotary@lancaironline.net; Fri, 14 Dec 2012 19:33:52 -0500 Received-SPF: pass receiver=logan.com; client-ip=17.158.58.247; envelope-from=steveizett@me.com MIME-version: 1.0 Content-transfer-encoding: 7BIT Content-type: text/plain; CHARSET=US-ASCII Received: from [10.1.1.6] (203-59-81-240.dyn.iinet.net.au [203.59.81.240]) by nk11p08mm-asmtp002.mac.com (Oracle Communications Messaging Server 7u4-26.01(7.0.4.26.0) 64bit (built Jul 13 2012)) with ESMTPSA id <0MF100BM5QVF8EA0@nk11p08mm-asmtp002.mac.com> for flyrotary@lancaironline.net; Sat, 15 Dec 2012 00:33:19 +0000 (GMT) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:5.9.8327,1.0.431,0.0.0000 definitions=2012-12-14_06:2012-12-15,2012-12-14,1970-01-01 signatures=0 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 ipscore=0 suspectscore=0 phishscore=0 bulkscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=6.0.2-1203120001 definitions=main-1212140267 From: Stephen Izett Subject: Duct Fabrication Date: Sat, 15 Dec 2012 08:33:13 +0800 Message-id: To: Rotary motors in aircraft X-Mailer: Apple Mail (2.1283) Hi Guys I am about to reinstall the Renesis engine in the Glasair SII and create the ducts to the exchangers. I plan to copy as closely as possible Tracy's 20B setup. Questions: 1. What is a good process? Shaping foam, sounds good. So how do you then seal it before applying glass/epoxy? 2. Tracy, why is your diffuser not a simple wedge? Do you believe you are getting a more even pressure to the top and bottom? Have you ever measured your pressure distribution? Thanks Steve Izett