Return-Path: Received: from tomcat.al.noaa.gov ([140.172.240.2] verified) by logan.com (CommuniGate Pro SMTP 4.2.1) with ESMTP id 401257 for flyrotary@lancaironline.net; Tue, 07 Sep 2004 17:21:56 -0400 Received-SPF: none receiver=logan.com; client-ip=140.172.240.2; envelope-from=bdube@al.noaa.gov Received: from PILEUS.al.noaa.gov (pileus.al.noaa.gov [140.172.241.195]) by tomcat.al.noaa.gov (8.12.0/8.12.0) with ESMTP id i87LLRuB006054 for ; Tue, 7 Sep 2004 15:21:27 -0600 (MDT) Message-Id: <5.2.1.1.0.20040907150946.027f5a68@mailsrvr.al.noaa.gov> X-Sender: bdube@mailsrvr.al.noaa.gov X-Mailer: QUALCOMM Windows Eudora Version 5.2.1 Date: Tue, 07 Sep 2004 15:21:46 -0600 To: "Rotary motors in aircraft" From: Bill Dube Subject: Re: [FlyRotary] high oil pressure and coolers In-Reply-To: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed > > >I'm really concerned about the evap core in the current >installation. First, it just failed, as did Dave's Setrab (rated up to >232 psi). How many other non-Mazda oil coolers have failed? If the car is sitting in the sun on a hot day, not running, the entire A/C system will see 170 psi, perhaps more in the tropics. Conversely, when the A/C is running, the condenser will see as much as 340 psi, but the condenser will be at about 15 psi. The "big book" says to use the stock oil Mazda cooler. It does not appear to be overly heavy or bulky. It has been proven to work. What would be the motivation to use something different? Maybe I've missed some important point.