Return-Path: Sender: (Marvin Kaye) To: flyrotary Date: Wed, 07 May 2003 20:53:30 -0400 Message-ID: X-Original-Return-Path: Received: from [199.185.220.224] (HELO priv-edtnes44.telusplanet.net) by logan.com (CommuniGate Pro SMTP 4.1b4) with ESMTP id 2336954 for flyrotary@lancaironline.net; Wed, 07 May 2003 20:51:50 -0400 Received: from Endurance ([207.194.22.5]) by priv-edtnes44.telusplanet.net (InterMail vM.5.01.05.17 201-253-122-126-117-20021021) with SMTP id <20030508005148.VBBX3906.priv-edtnes44.telusplanet.net@Endurance> for ; Wed, 7 May 2003 18:51:48 -0600 From: "Haywire" X-Original-To: "Rotary motors in aircraft" Subject: 321 SS thickness X-Original-Date: Wed, 7 May 2003 17:51:38 -0700 X-Original-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 (9.0.2910.0) Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 Hey Guys; I'm about to order some SS tubing from Dawley and would prefer to order the .035 wall for weight reasons. Reading the section on exhaust in the book "Maximum Boost", Corky Bell suggests that thinner material will remain cooler as there is less material to absorb and conduct heat. This makes sense, but I just thought I'd ask the list as I know some of you have already experimented with this. Has anybody considered having the interior wall of the exhaust pipe ceramic coated? I've already had the rotors ceramic coated, and the company that did them recommended that the exhaust pipe be done as well, but it needs to be done while new, as it is impossible to properly clean exhaust residue from the inside of the pipe. S. Todd Bartrim Turbo 13B RV-9Endurance C-FSTB http://www3.telus.net/haywire/RV-9/C-FSTB.htm "Whatever you vividly imagine, Ardently desire, Sincerely believe in, Enthusiastically act upon, Must inevitably come to pass".