X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from qmta08.emeryville.ca.mail.comcast.net ([76.96.30.80] verified) by logan.com (CommuniGate Pro SMTP 5.4.5) with ESMTP id 5584322 for flyrotary@lancaironline.net; Wed, 06 Jun 2012 18:54:31 -0400 Received-SPF: pass receiver=logan.com; client-ip=76.96.30.80; envelope-from=randolph7714@comcast.net Received: from omta04.emeryville.ca.mail.comcast.net ([76.96.30.35]) by qmta08.emeryville.ca.mail.comcast.net with comcast id KAnZ1j0010lTkoCA8AtvAE; Wed, 06 Jun 2012 22:53:55 +0000 Received: from RandySmithPC ([98.198.179.1]) by omta04.emeryville.ca.mail.comcast.net with comcast id KAtt1j00y02CD2S8QAtueS; Wed, 06 Jun 2012 22:53:54 +0000 From: "Randolph" To: "Rotary motors in aircraft" Subject: Not a good sign Date: Wed, 6 Jun 2012 17:53:53 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0000_01CD440D.56DAB5D0" X-Mailer: Microsoft Office Outlook, Build 11.0.5510 Thread-Index: Ac1ENz6yFAiar4VwSkqdEjq3SC0B0w== X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6002.18463 Message-ID: This is a multi-part message in MIME format. ------=_NextPart_000_0000_01CD440D.56DAB5D0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit AcroSport biplane 13B using EC3., EM3, dash C psru, 74X64 Sterba prop. Hobbs shows 5 hours of ground running...WOT static shows 6500RPM 170 HP, 17 GPM. Well dream on concerning that number. After about ten minutes of variable throttle settings we read water and oil at 158 degrees, day was cool for Houston, 70 degrees. To approximate take off power, and time, ran 6000RPM for four minutes and observe water at 208 F oil about the same, and climbing slowly. Hope she cools better in flight. At my next trip to the hangar I pulled the dip stick and found traces of condensed oil/water slime on the rod. The crank case oil was at the proper level and was clear and appeared normal. Back in December 2007 when I assembled this 13B I had a lot of problems because the oil and water seals would not stay in their grooves...appeared to be too small, had to slide the housings around to get closure and allow the assembly bolts to pass through. So who knows what twisted condition they may now lay in. Losing a little water this way is like begin a little pregnant, isn't it? I checked the oil/vapor separator and it shows nothing from the engine after these 5 hours of run time. At 72 years of age, I really want to install the wings and fly this 15 year project for some gratification before the delay of a complete engine re-do. What do you think? Randy ------=_NextPart_000_0000_01CD440D.56DAB5D0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable
AcroSport=20 biplane 13B using EC3., EM3,  dash C psru, 74X64 Sterba prop.  = Hobbs=20 shows 5 hours of ground running...WOT static shows 6500RPM 170 HP, 17 = GPM. =20 Well dream on concerning that number.  After about ten minutes of = variable=20 throttle settings we read water and oil at 158 degrees, day was cool for = Houston, 70 degrees.  To approximate take off power, and time, =  ran=20 6000RPM for four minutes and observe water at 208 F oil about the same, = and=20 climbing slowly.  Hope she cools better in = flight. At my  next trip to the hangar I pulled = the dip=20 stick and found traces of condensed oil/water slime on the rod.  = The crank=20 case oil was at the proper level and was clear and appeared = normal.  Back=20 in December 2007 when I assembled this 13B I had a lot of problems = because the=20 oil  and water seals would not stay in their grooves...appeared to = be too=20 small, had to slide the housings around to get closure and allow the = assembly=20 bolts to pass through.  So who knows what twisted condition they = may now=20 lay in.  Losing a little water this way is like begin a little = pregnant,=20 isn't it?  I checked the oil/vapor separator and it shows nothing = from the=20 engine after these 5 hours of run time.  At 72 years of age, I = really=20 want to install the wings and fly this 15 year project for some = gratification=20 before the delay of a complete engine re-do.   What do you=20 think? 
Randy
 


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