X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from cdptpa-omtalb.mail.rr.com ([75.180.132.123] verified) by logan.com (CommuniGate Pro SMTP 5.2.12) with ESMTP id 3483244 for flyrotary@lancaironline.net; Sun, 08 Feb 2009 19:57:18 -0500 Received-SPF: pass receiver=logan.com; client-ip=75.180.132.123; envelope-from=eanderson@carolina.rr.com Received: from computername ([75.191.186.236]) by cdptpa-omta04.mail.rr.com with ESMTP id <20090209005640.BBO23506.cdptpa-omta04.mail.rr.com@computername> for ; Mon, 9 Feb 2009 00:56:40 +0000 From: "Ed Anderson" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] NEW failure mode for 13B Date: Sun, 8 Feb 2009 19:56:39 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_001D_01C98A27.5B9B45B0" X-Mailer: Microsoft Office Outlook, Build 11.0.5510 Thread-Index: AcmKRUMbcz0+nsqqSTevjraqkO8gggACygww In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 Message-Id: <20090209005640.BBO23506.cdptpa-omta04.mail.rr.com@computername> This is a multi-part message in MIME format. ------=_NextPart_000_001D_01C98A27.5B9B45B0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Geez, Bill - too much excitement for my blood. But, glad it happened on the ground during a run-up - one of the reasons, you can't spend too much time on ground run ups. I probably had 30 hours before the first flight (perhaps a bit excessive {:>)). Sure wouldn't think 14 psi would blow out a freeze plug - but guess it all depends on how secure it is. Naturally, you would want to think whether any factors might have caused localized pressure build up. The only freeze plugs I have installed were in the aluminum turbo housings which had openings to exchange coolant with the intake manifold. If you were full tilt boogie when it let go, I would imagine the exhaust was a mite hot and glycol, of course, will burn if its flash point is exceeded. Having had a fiberglass wheel pant burn when I had my brake fire, glad you got it put out before it really got going. Don't start trying to exceed my achievements in the "what can go wrong" arena {:>) Ed Ed Anderson Rv-6A N494BW Rotary Powered Matthews, NC eanderson@carolina.rr.com http://www.andersonee.com http://www.dmack.net/mazda/index.html http://www.flyrotary.com/ http://members.cox.net/rogersda/rotary/configs.htm#N494BW _____ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Bill Schertz Sent: Sunday, February 08, 2009 6:30 PM To: Rotary motors in aircraft Subject: [FlyRotary] NEW failure mode for 13B 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. __________ Information from ESET NOD32 Antivirus, version of virus signature database 3267 (20080714) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com ------=_NextPart_000_001D_01C98A27.5B9B45B0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Geez, Bill – too much = excitement for my blood.  But, glad it happened on the ground during a run-up = – one of the reasons, you can’t spend too much time on ground run = ups.  I probably had 30 hours before the first flight (perhaps a bit excessive {:>)).

 

Sure wouldn’t think 14 psi = would blow out a freeze plug – but guess it all depends on how secure it is.  Naturally, you would want to think whether any factors might = have caused localized pressure build up.  The only freeze plugs I have installed were in the aluminum turbo housings which had openings to = exchange coolant with the intake manifold. 

 

If you were full tilt boogie when = it let go, I would imagine the exhaust was a mite hot and glycol, of course, = will burn if its flash point is exceeded.  Having had a fiberglass wheel pant = burn when I had my brake fire, glad you got it put out before it really got = going.

 

Don’t start trying to exceed = my achievements in the “what can go wrong” arena = {:>)

 

Ed

 

From: = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Bill Schertz
Sent: Sunday, February = 08, 2009 6:30 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] NEW = failure mode for 13B

 

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.

 



__________ Information from ESET NOD32 Antivirus, version of virus = signature database 3267 (20080714) __________

The message was checked by ESET NOD32 Antivirus.

http://www.eset.com

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