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 5.3.11) with ESMTP id 4674613 for flyrotary@lancaironline.net; Fri, 14 Jan 2011 09:33:43 -0500 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; Fri, 14 Jan 2011 08:29:42 -0600 From: Chris Barber To: Rotary motors in aircraft Subject: RE: [FlyRotary] Re: Apex seal update cont with pix of rotorandapexseals Thread-Topic: [FlyRotary] Re: Apex seal update cont with pix of rotorandapexseals Thread-Index: AQHLs/dKyemOFCBW2Um/JuN3FMplT5PQh7lo Date: Fri, 14 Jan 2011 14:33:04 +0000 Message-ID: <2D41F9BF3B5F9842B164AF93214F3D303563CFD2@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: [166.139.76.11] Content-Type: multipart/alternative; boundary="_000_2D41F9BF3B5F9842B164AF93214F3D303563CFD2FCDMAIL06FCDATA_" MIME-Version: 1.0 --_000_2D41F9BF3B5F9842B164AF93214F3D303563CFD2FCDMAIL06FCDATA_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Bill, good point, but since I do regularly check the pressure I do not thin= k for too long. Also, IIRC, the premix oil is primarily responsible for th= e apex seals, but I would think it could be a factor. Chris ________________________________ From: Rotary motors in aircraft [flyrotary@lancaironline.net] on behalf of = Bill Bradburry [bbradburry@bellsouth.net] Sent: Friday, January 14, 2011 8:27 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Apex seal update cont with pix of rotorandapexseal= s Chris, How long did you run with low oil pressure/no oil? The oil cools the rotor= s, a lack of it could have overheated them and weakened the springs?? Bill B ________________________________ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Beh= alf Of Chris Barber Sent: Friday, January 14, 2011 8:19 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Apex seal update cont with pix of rotor andapexsea= ls I am premixing. Also, I am only using three lbs of boost. I was under the impression that = this low of boost should not be a problem. I know there are many other pos= sible causes and will be investigating. I may start by putting in a lower boost spring in the waste gate (1.5 lbs) = but I am not really thinking this is the issue. Perhaps timing, as I did p= lay with it quite a bit before I sent my EC2 to Tracy for a check and updat= e. My higher power tests were quite short as the engine would get hot fast= but never to any degree that I would have thought would be a problem. I have an intercooler, however, without any airflow its usefulness during t= esting is next to nothing. Also, the intercooler ducting is somewhat minimu= m at this point. I thought I would recognize detonation, as Lynn mentioned, but perhaps not. I also read on the RX-7 site that the rear chamber is the one to usually fa= il, as mine seems to bare out. Christopher Barber, JD. Corporal; Patrol Division Master Peace Officer Badge 330 Bellaire Police Department 5100 Jessamine Bellaire, Texas 77401 713-668-0487 CBarber@BellariePolice.com ________________________________ From: Rotary motors in aircraft [flyrotary@lancaironline.net] on behalf of = Mark Steitle [msteitle@gmail.com] Sent: Friday, January 14, 2011 05:52 To: Rotary motors in aircraft Subject: [FlyRotary] Re: Apex seal update cont with pix of rotor andapex se= als My first impression is they got overheated. Each apex appears very dark, p= ossibly due to heat. Are you pre-mixing or using the injection pump. Mark On Thu, Jan 13, 2011 at 8:52 PM, Chris Barber > wrote: ...and finally, for now. Thanks folks Chris -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.= html Warning: This e-mail transmission, and any documents, files or previous e-m= ails attached to it, may contain confidential information that is legally p= rivileged. If you are not the intended recipient or the person responsible = for delivering it to the intended recipient, you are hereby notified that a= ny disclosure, copying, distribution or use of any of the information conta= ined in or attached to this transmission is STRICTLY PROHIBITED. If you hav= e received this transmission in error, please immediately notify us by tele= phone at 713-662-8132 and destroy the original transmission and its attachm= ents without reading them. Thank you. --_000_2D41F9BF3B5F9842B164AF93214F3D303563CFD2FCDMAIL06FCDATA_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Bill, good point, but since I do regularly check the pressur= e I do not think for too long.  Also, IIRC, the premix o= il is primarily responsible for the apex seals, but I would think it could = be a factor.

 

Chris

From: Rotary motors in aircraft [flyrotary= @lancaironline.net] on behalf of Bill Bradburry [bbradburry@bellsouth.net]<= br> Sent: Friday, January 14, 2011 8:27 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Apex seal update cont with pix of rotoranda= pexseals

Chris,

How long did yo= u run with low oil pressure/no oil?  The oil cools the rotors, a lack = of it could have overheated them and weakened the springs??

&= nbsp;

Bill B

&= nbsp;

From:= Rotary motors in aircraft [mailto:flyrotary@lancaironline.n= et] On Behalf Of Chris Barber Sent: Friday, January 14, 2= 011 8:19 AM
To: Rotary motors in aircra= ft
Subject: [FlyRotary] Re: Ap= ex seal update cont with pix of rotor andapexseals

 

I am premixing.

 

Also, I am only using three lbs= of boost.  I was under the impression that this low of boost should n= ot be a problem.  I know there are many other possible causes and will be investigating. 

 

I may start by putting in a low= er boost spring in the waste gate (1.5 lbs) but I am not really thinki= ng this is the issue.  Perhaps timing, as I did play with it quite a bit before I sent my EC2 to Tracy for a check an= d update.  My higher power tests were quite short as the engine would = get hot fast but never to any degree that I would have thought would be a p= roblem.

 

I have an intercooler, however,= without any airflow its usefulness during testing is next to nothing.= Also, the intercooler ducting is somewhat minimum at this point.

 

I thought I would recognize det= onation, as Lynn mentioned, but perhaps not.

 

I also read on the RX-7 site th= at the rear chamber is the one to usually fail, as mine seems to bare = out.

 

Christopher B= arber, JD.

Corporal; Pat= rol Division= <= /font>

Master Peace = Officer

Badge 330

Bellaire Poli= ce Department=

5100 Jessamin= e

Bellaire, Texas 77401= <= /font>

 

713-668-0487<= /span>

From: Rotary motors in aircraft [flyrotary@lancaironline.net] on behalf of Mark = Steitle [msteitle@gmail.com]
Sent: Friday, January 14, 2= 011 05:52
To: Rotary motors in aircra= ft
Subject: [FlyRotary] Re: Ap= ex seal update cont with pix of rotor andapex seals

My first impression is= they got overheated.  Each apex appears very dark, possibly due to he= at.  Are you pre-mixing or using the injection pump.  

 

Mark

On Thu, Jan 13, 2011 a= t 8:52 PM, Chris Barber <cbarber@texasattorney.net> wrote:

...and finally, for now.=

 

Thanks folks

 

Chris


--
Homepage:  htt= p://www.flyrotary.com/
Archive and UnSub:   http://mail.lancaironline.net:81/lists/flyrotary/List.html

 


Warning: This e-mail transmission, and any documents, files or previous e-m= ails attached to it, may contain confidential information that is legally p= rivileged. If you are not the intended recipient or the person responsible = for delivering it to the intended recipient, you are hereby notified that any disclosure, copying, distribut= ion or use of any of the information contained in or attached to this trans= mission is STRICTLY PROHIBITED. If you have received this transmission in e= rror, please immediately notify us by telephone at 713-662-8132 and destroy the original transmission and = its attachments without reading them. Thank you.

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