X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from QMTA02.emeryville.ca.mail.comcast.net ([76.96.30.24] verified) by logan.com (CommuniGate Pro SMTP 5.2.12) with ESMTP id 3483189 for flyrotary@lancaironline.net; Sun, 08 Feb 2009 18:30:41 -0500 Received-SPF: pass receiver=logan.com; client-ip=76.96.30.24; envelope-from=wschertz@comcast.net Received: from OMTA04.emeryville.ca.mail.comcast.net ([76.96.30.35]) by QMTA02.emeryville.ca.mail.comcast.net with comcast id DSxR1b0050lTkoCA2bW6E2; Sun, 08 Feb 2009 23:30:06 +0000 Received: from WschertzPC ([71.57.77.95]) by OMTA04.emeryville.ca.mail.comcast.net with comcast id DbW51b00323NHuF8QbW560; Sun, 08 Feb 2009 23:30:06 +0000 Message-ID: <731A3CD0872149DAA55AB72B4E84D9A5@WschertzPC> From: "Bill Schertz" To: "Rotary motors in aircraft" Subject: NEW failure mode for 13B Date: Sun, 8 Feb 2009 17:30:02 -0600 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0049_01C98A12.DFEB6440" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Windows Mail 6.0.6001.18000 X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6001.18049 This is a multi-part message in MIME format. ------=_NextPart_000_0049_01C98A12.DFEB6440 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Well, I haven't heard of this happening before -- I was ground running = my engine to tune it with the EM-2 and EC-2. Ran for almost an hour, = at various rpm's to change the manifold pressure and tweak the settings. = Cooling working well, I had the top cowling off to allow good exit area = since I was tied down. Coolant pressure about 14 psi as reported on the = EM-2. Engine was running good, took it up to ~6000 rpm swinging a 76x76 Catto = prop, when suddenly there was steam and fluid on my windshield. Shut it = down by killing power to the EC-2. Coolant everywhere. Got out and looked to diagnose the problem -- NOT my plumbing. A FREEZE = PLUG in the iron housing had blown out. Rapid coolant dump. Secondary effect -- Since I shut down suddenly from full tilt, either = the proximity of the cowl to the exhaust, or possibly some of the = coolant on the exhaust started a small fire on my cowl. Put it out with = extinguisher, but corner is charred. Bill Schertz KIS Cruiser #4045 N343BS Now in repair mode. ------=_NextPart_000_0049_01C98A12.DFEB6440 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Well, I haven't heard of this happening = before -- I=20 was ground running my engine to tune it with the EM-2 and = EC-2. Ran=20 for almost an hour, at various rpm's to change the manifold pressure and = tweak=20 the settings. Cooling working well, I had the top cowling off to allow = good exit=20 area since I was tied down. Coolant pressure about 14 psi as reported on = the=20 EM-2.

Engine was running good, took it up to = ~6000 rpm=20 swinging a 76x76 Catto prop, when suddenly there was steam and fluid on = my=20 windshield. Shut it down by killing power to the EC-2. Coolant=20 everywhere.

Got out and looked to diagnose the = problem -- NOT=20 my plumbing. A FREEZE PLUG in the iron housing had blown out. = Rapid=20 coolant dump.

Secondary effect -- Since I shut down = suddenly from=20 full tilt, either the proximity of the cowl to the exhaust, or possibly = some of=20 the coolant on the exhaust started a small fire on my cowl. Put it out = with=20 extinguisher, but corner is charred.

Bill Schertz
KIS Cruiser=20 #4045
N343BS

Now in repair mode.

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