X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from cdptpa-omtalb.mail.rr.com ([75.180.132.120] verified) by logan.com (CommuniGate Pro SMTP 5.2.3) with ESMTP id 2958001 for flyrotary@lancaironline.net; Sat, 07 Jun 2008 17:56:14 -0400 Received-SPF: pass receiver=logan.com; client-ip=75.180.132.120; envelope-from=eanderson@carolina.rr.com Received: from edward2 ([75.191.186.236]) by cdptpa-omta01.mail.rr.com with SMTP id <20080607215536.RCXZ20096.cdptpa-omta01.mail.rr.com@edward2> for ; Sat, 7 Jun 2008 21:55:36 +0000 Message-ID: <000b01c8c8e8$f27dfcd0$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Ceramic Seals Was Re: [FlyRotary] Re: Steam engines Date: Sat, 7 Jun 2008 17:53:40 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0008_01C8C8C7.6B356E50" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3138 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3198 This is a multi-part message in MIME format. ------=_NextPart_000_0008_01C8C8C7.6B356E50 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable One reason you do not, Paul, is that when I priced a set for a 2 rotor = back about 10 years ago, they ran $1200 (that's right - just for the = seals). While there is little doubt that for the racing crowed to stay = competitive such expense may well be required and justified. For us = guys running below 9000 rpm - they are simply not needed. I would stick = in a set of the new type seals from Real World Solutions and go flying - = in fact, that is what I did do {:>) The ceramic seals may be a bit cheaper now, but are probably still quite = expensive and they need in out application is simply not there. My 0.02 worth Ed Ed ----- Original Message -----=20 From: Paul Vermillion=20 To: Rotary motors in aircraft=20 Sent: Saturday, June 07, 2008 5:22 PM Subject: [FlyRotary] Re: Steam engines Newbie Question---for the "normal"13B NA engine, how do the ceramic = apex seals compare with the other types of seals you all are using? = (I've rarely ever read anything about their use in this forum.) =20 Paul Vermillion =20 From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] = On Behalf Of Lynn Hanover Sent: Friday, June 06, 2008 2:18 PM To: Rotary motors in aircraft Subject: [FlyRotary] Steam engines =20 Steam engines use with contained (reused steam) use water based = lubricants. No problem. =20 Lynn E. Hanover =20 =20 =20 Good point. I imagine you could use the ceramic apex seals, but their cost would make the whole thing more expensive than I would probably want to go. Do you think having the seals coated with a ceramic might work/stay on? Grant=20 ------=_NextPart_000_0008_01C8C8C7.6B356E50 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
One reason you do not, Paul, is that = when I=20 priced a set for a 2 rotor back about 10 years ago, they ran $1200 = (that's right=20 - just for the seals).  While there is little doubt that for the = racing=20 crowed to stay competitive such expense may well be required and=20 justified.  For us guys running below 9000 rpm - they are simply = not=20 needed.  I would stick in a set of the new type seals from Real = World=20 Solutions and go flying - in fact, that is what I did do = {:>)
 
The ceramic seals may be a bit cheaper = now, but=20 are probably still quite expensive and they need in out application is = simply=20 not there.
 
My 0.02 worth
 
Ed
 
Ed
----- Original Message -----
From:=20 Paul = Vermillion=20
Sent: Saturday, June 07, 2008 = 5:22=20 PM
Subject: [FlyRotary] Re: Steam=20 engines

Newbie=20 Question---for the =93normal=9413B NA engine, how do the ceramic =  apex seals=20 compare with the other types of seals you all are using?  = (I=92ve rarely=20 ever read anything about their use in this = forum.)

 

Paul=20 Vermillion

 

From: Rotary = motors in=20 aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Lynn = Hanover
Sent: Friday, June 06, 2008 2:18 PM
To: = Rotary=20 motors in aircraft
Subject: [FlyRotary] Steam=20 engines

 

Steam engines use with contained (reused steam) = use water=20 based lubricants. No problem.

 

Lynn E. Hanover

 

 

 

Good point.  I imagine you could use the = ceramic apex=20 seals, but their
cost would make the whole thing more expensive = than I=20 would probably
want to go.  Do you think having the seals = coated with=20 a ceramic might
work/stay on?

Grant=20

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