X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [64.129.170.194] (HELO VIRCOM1.fcdata.private) by logan.com (CommuniGate Pro SMTP 5.4c2) with ESMTP id 4923439 for flyrotary@lancaironline.net; Sat, 26 Mar 2011 13:18:39 -0400 Received-SPF: none receiver=logan.com; client-ip=64.129.170.194; envelope-from=cbarber@texasattorney.net Received: from FCD-MAIL06.FCDATA.PRIVATE ([fe80::697f:d6aa:b87:78d8]) by FCD-MAIL05.FCDATA.PRIVATE ([fe80::809d:a06e:5913:452e%15]) with mapi id 14.01.0270.001; Sat, 26 Mar 2011 12:13:20 -0500 From: Chris Barber To: Rotary motors in aircraft Subject: RE: [FlyRotary] Re: On the subject of installations...Coolant Pressure Thread-Topic: [FlyRotary] Re: On the subject of installations...Coolant Pressure Thread-Index: AQHL69PkGRekfT6x2Uu7Z7AQAYJhBpQ/1xEi Date: Sat, 26 Mar 2011 17:16:42 +0000 Message-ID: <2D41F9BF3B5F9842B164AF93214F3D303574FF23@FCD-MAIL06.FCDATA.PRIVATE> References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [99.98.105.202] Content-Type: multipart/alternative; boundary="_000_2D41F9BF3B5F9842B164AF93214F3D303574FF23FCDMAIL06FCDATA_" MIME-Version: 1.0 --_000_2D41F9BF3B5F9842B164AF93214F3D303574FF23FCDMAIL06FCDATA_ Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable Bill, The first time (Gawd I hate having to say the "first" time) I found coolant= in my engine we were having an EAA meeting in my hangar and before the mee= ting one of the guys saw a trickle of coolant on the tailpipe. That was on= the engine that was built from three used engines from ebay. I unknowingl= y, at the time, abused the hell out of it. It was starting, but was diffic= ult to RE-start. The second time was when a water galley wall in a brand new Mazda center ir= on failed. It failed in the first hour. That time when I removed the plugs= and pulled the prop through, coolant shot across the wing (pusher) about f= ive feet. Uh, it was quite obvious there was a problem. Now, on my rebuild from last weekend, the engine, currently, at least, is s= tarting like a car off the showroom floor. I have literally found myself o= n the ramp at midnight just starting the engine, letting it run a couple of= minutes, then shutting it down so I can start it again. Yeah, I am a 12 y= ear old. I am currently working 'til 11:00 pm as a patrol supervisor, so my after wo= rk hangar time is late. Ellington Field, while in the middle of the Clear L= ake/NASA suburban area of Houston, is still isolated enough at the City Han= gars that this is acceptable. Also, as loud as the rotary is, much less so= with the turbo, it still has nothing on the corporate jets and military (o= ften with afterburners) jets coming in and out 24/7 Chris ________________________________ From: Rotary motors in aircraft [flyrotary@lancaironline.net] on behalf of = Bill Bradburry [bbradburry@bellsouth.net] Sent: Saturday, March 26, 2011 11:39 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: On the subject of installations...Coolant Pressure I checked the coolant in the radiator for oil residue floating on top and f= ound none. The radiator was completely full with no air. I removed a plug= from each rotor and turned the engine over looking for water coming out of= the plug holes=85nothing. It appears to me that the o-rings are not faile= d and the high coolant pressure is not coming from a leak from the combusti= on chambers. I have located a borescope and I plan to inspect the inside of the radiator= tank on the inlet side. I also plan to remove the water pump and inspect = as far inside the coolant passages as I can see looking for an obstruction. Do I need to replace the gasket on the water pump when I reinstall it? Do = I need to use any sealant? What say ye who have removed/replaced water pum= ps? If the o-rings are ok and if I don=92t find an obstruction, any other ideas= as to the cause of the high water pressure?? What about any suggested tests??? Bill B --_000_2D41F9BF3B5F9842B164AF93214F3D303574FF23FCDMAIL06FCDATA_ Content-Type: text/html; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable

Bill,

 

The first time (Gawd I hate having to say the "= ;first" time) I found coolant in my engine we were having an EAA<= a> meeting in my hangar and before the meeting one of the= guys saw a trickle of coolant on the tailpipe.  That was on the engine that was built from three used engines from ebay= .  I unknowingly, at the time, abused the hell out o= f it.  It was starting, but was difficult to RE-start.

 

The second time was when a water galley wall in a brand new Mazda c= enter iron failed. It failed in the first hour.  That time when I= removed the plugs and pulled the prop through, coolant shot across the win= g (pusher) about five feet.  Uh, it was quite obvious there was a problem.

 

Now, on my rebuild from last weekend, the engine, currently, at least, i= s starting like a car off the showroom floor.  I have literally found myself on the ramp at midnight just starting the engine,= letting it run a couple of minutes, then shutting it down so I can start it again.  Yeah, I am a 12 year = old.

 

I am currently working 'til 11:00 pm as a patrol= supervisor, so my after work hangar time is late. Ellington Field, wh= ile in the middle of the Clear Lake/NASA suburban area of Houst= on, is still isolated enough at the City Hangars that this is acceptable.  Also, as loud as the rotary is, much less so wit= h the turbo, it still has nothing on the corporate jets and military (often= with afterburners) jets coming in and out 24/7

 

Chris

From: Rotary motors in aircraft [flyrotary@= lancaironline.net] on behalf of Bill Bradburry [bbradburry@bellsouth.net] Sent: Saturday, March 26, 2011 11:39 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: On the subject of installations...Coolant P= ressure

I checked the c= oolant in the radiator for oil residue floating on top and found none. = ; The radiator was completely full with no air.  I removed a plug from each rotor and turned the engine over looking for wa= ter coming out of the plug holes=85nothing.  It appears to me that the= o-rings are not failed and the high coolant pressure is not coming from a = leak from the combustion chambers.

&= nbsp;

I have located = a borescope and I plan to inspect the inside of the radiator tank on the in= let side.  I also plan to remove the water pump and inspect as far inside the coolant passages as I can see looking f= or an obstruction.

&= nbsp;

Do I need to re= place the gasket on the water pump when I reinstall it?  Do I need to = use any sealant?  What say ye who have removed/replaced water pumps?

&= nbsp;

If the o-rings = are ok and if I don=92t find an obstruction, any other ideas as to the caus= e of the high water pressure??

&= nbsp;

What about any = suggested tests???

&= nbsp;

Bill B

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