X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [66.219.56.253] (HELO mail.qnsi.net) by logan.com (CommuniGate Pro SMTP 5.2.14) with ESMTP id 3734847 for flyrotary@lancaironline.net; Sat, 27 Jun 2009 17:00:02 -0400 Received-SPF: none receiver=logan.com; client-ip=66.219.56.253; envelope-from=bhughes@qnsi.net Return-Receipt-To: "Bobby J. Hughes" Subject: RE: [FlyRotary] Mallory fuel pressure regulator- RV10 Renesis update. Date: Sat, 27 Jun 2009 16:01:14 -0600 MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message-ID: <74120FDE88CAFE4DBDA8814BCE20A3F315E54A@qnsi-mail.qnsi.net> X-MS-Has-Attach: Disposition-Notification-To: "Bobby J. Hughes" Content-class: urn:content-classes:message X-MS-TNEF-Correlator: Thread-Topic: [FlyRotary] Mallory fuel pressure regulator- RV10 Renesis update. Thread-Index: Acn3USUlMpHWFK3NTmWkl6vxy+qEOAAFbW7g X-MimeOLE: Produced By Microsoft Exchange V6.5 References: From: "Bobby J. Hughes" To: "Rotary motors in aircraft" =20 Steve, I'm still not sure my Aeromotive regulator is tracking MP correctly. I pulled the data from my last few flights but haven't looked at MP / Fuel psi yet. I replaced a leaking OP sender and after a few flights it started showing low pressure (5-25 psi)sometimes in climbing. The EM-3 sender was always stable. I replaced the sender and flew about two hours Thursday morning. Seems to have fixed the problem. I also changed my oil /water heat exchanger plumbing. It was plumbed between my two radiators. Oil was tracking 15-20 degrees hotter than my water. Water at 200F and oil at 215-220F I have been needing to pull most boost and lower the prop rpm once reaching pattern altitude. At pattern, reducing climb to 600 fpm has allowed me to stabilize the oil temp. Oil has been in the 220's a few times with water at 204F. In an attempt to transfer more oil heat I re-plumbed the exchanger between the second radiator and the engine inlet. This change seems to have moved 5 additional degrees to the water. Water has gone up about 2 degrees. Still not good enough. I will start looking at airflow and air delta-t after a family vacation next week. My inlet total is about 58 - 60 sqin's. I am starting to think the inlets may be a little small for the HP. I'm transferring about 40-43 degrees of oil temp to the water so that part seems to be working. Ground OAT during testing has been in the mid 80's to mid 90's. Bobby- (headed to Arkansas) RV-10 SC-Renesis=20 12 flight hours / 50 engine hours.=20