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 4674589 for flyrotary@lancaironline.net; Fri, 14 Jan 2011 09:31:42 -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 08:27:42 -0600 From: Chris Barber To: Rotary motors in aircraft Subject: RE: [FlyRotary] Re: Apex seal update cont Thread-Topic: [FlyRotary] Re: Apex seal update cont Thread-Index: AQHLs/XfKylPLT1FoUCCUnCgOoeRkZPQhebN Date: Fri, 14 Jan 2011 14:31:04 +0000 Message-ID: <2D41F9BF3B5F9842B164AF93214F3D303563CF9D@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_2D41F9BF3B5F9842B164AF93214F3D303563CF9DFCDMAIL06FCDATA_" MIME-Version: 1.0 --_000_2D41F9BF3B5F9842B164AF93214F3D303563CF9DFCDMAIL06FCDATA_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Yeah, it more then passingly crossed my mind, but I do not relish the idea.= But, it does make complete sense. That being said, the springiness was go= od as was the compression. I am usually alone in the hangar alone, so pulli= ng the shaft to reinstall by myself was doable but a pain. Course I may be= able to recruit some help, I have not alienated all my friends yet by spen= ding most my time building an airplane...... On the bright side, the idea of cracking open a rotary presents no concern = really anymore. 'Bout the same as removing a tire :-) In some ways, I am k= inda happy of this comfort level. See, even though I could never go into p= olitics, since I am a Libertarian AND since I actually have opinions, I can= spin a story. Chris ________________________________ From: Rotary motors in aircraft [flyrotary@lancaironline.net] on behalf of = Bobby J. Hughes [bhughes@qnsi.net] Sent: Friday, January 14, 2011 8:21 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Apex seal update cont Chris, How do the front rotor seals look? Due to the damage and missing parts I wo= uld go ahead and do a full teardown. Bobby ________________________________ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Beh= alf Of Chris Barber Sent: Thursday, January 13, 2011 8:49 PM To: Rotary motors in aircraft Subject: [FlyRotary] Apex seal update cont I pulled the rear iron tonight to check the apex seals. Luckily, the apex = seals themselves look good. Also, the combustion chamber looks as I think = it should. However, I did find some issues. The one I was expecting was that the apex springs were flat. Also, one of = the apex corner seal plugs was broken as was a small piece off of one of th= e side seals. No damage was apparent inside the chamber so I think they br= oke as I was taking them out. Donno, but there is not apparent damage insi= de at all. Also, the springs for the corner seals were flat. The really strange thing to me is that the rubber apex corner seal plugs, t= he little rubber inserts that seems to hold the assemble together were gone= ....none of the six were anywhere to be found. This engine has not been ov= erheated to any abusive degree, but the inserts were gone. I am still waiting for the Mazda apex seal springs to arrive from Mazdatrix= . I will now need to order the rubber inserts as well and the corner sprin= gs and wait for them to arrive. Thoughts? I on an RX7 forum that some of the early RA springs are now known to be wea= k links. I am attaching some photos. Note, the springs are laying on their sides. All the best, Chris Barber Houston --_000_2D41F9BF3B5F9842B164AF93214F3D303563CF9DFCDMAIL06FCDATA_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Yeah, it more then passingly crossed my mind, but I d= o not relish the idea.  But, it does make complete sense. That being s= aid, the springiness was good as was the compression. I am usua= lly alone in the hangar alone, so pulling the shaft to reinstall by myself was doable but a pain.  Course I may be a= ble to recruit some help, I have not alienated all my friends y= et by spending most my time building an airplane......

 

On the bright side, the idea of cracking open a rotary presents no conce= rn really anymore. 'Bout the same as removing a tire :-)  In some ways= , I am kinda happy of this comfort level.  See, eve= n though I could never go into politics, since I am a Libertarian AND since I actually have opinions, I can spin a story.=

 

Chris

From: Rotary motors in aircraft [flyrotary= @lancaironline.net] on behalf of Bobby J. Hughes [bhughes@qnsi.net]
Sent: Friday, January 14, 2011 8:21 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Apex seal update cont

Chris,

 

How do the front rotor seals look? Due to the damage and = missing parts I would go ahead and do a full teardown.

 

Bobby

From:= Rotary motors in aircraft [mailto:flyrotary@lancaironline.n= et] On Behalf Of Chris Barber Sent: Thursday, January 13,= 2011 8:49 PM
To: Rotary motors in aircra= ft
Subject: [FlyRotary] Apex s= eal update cont

 

I pulled the rear iron tonight = to check the apex seals.  Luckily, the apex seals themselves look good= .  Also, the combustion chamber looks as I think it should.  However, I did find some issues.

 

The one I was expecting was tha= t the apex springs were flat.  Also, one of the apex corner seal plugs= was broken as was a small piece off of one of the side seals.  No damage was apparent inside the chamber so I = think they broke as I was taking them out.  Donno, but there is not&nb= sp;apparent damage inside at all.

 

Also, the springs for the corne= r seals were flat.

 

The really strange thing to me = is that the rubber apex corner seal plugs, the little rubber inserts that s= eems to hold the assemble together were gone....none of the six were anywhere to be found.  This engine has n= ot been overheated to any abusive degree, but the inserts were gone.=

 

I am still waiting for the Mazd= a apex seal springs to arrive from Mazdatrix.  I will now need to= order the rubber inserts as well and the corner springs and wait for them to arrive.

 

Thoughts?

 

I on an RX7 forum that som= e of the early RA springs are now known to be weak links. 

 

I am attaching some photos. Not= e, the springs are laying on their sides.

 

All the best,

 

Chris Barber

Houston

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