X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [24.25.9.103] (HELO ms-smtp-04-eri0.southeast.rr.com) by logan.com (CommuniGate Pro SMTP 4.3c5) with ESMTP id 930296 for flyrotary@lancaironline.net; Mon, 02 May 2005 15:39:36 -0400 Received-SPF: pass receiver=logan.com; client-ip=24.25.9.103; envelope-from=eanderson@carolina.rr.com Received: from edward2 (cpe-024-074-189-178.carolina.res.rr.com [24.74.189.178]) by ms-smtp-04-eri0.southeast.rr.com (8.12.10/8.12.7) with SMTP id j42JcmL5008286 for ; Mon, 2 May 2005 15:38:48 -0400 (EDT) Message-ID: <001201c54f4e$9089a3b0$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Renesis Build Options Date: Mon, 2 May 2005 15:38:49 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_000F_01C54F2D.09438630" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 X-Virus-Scanned: Symantec AntiVirus Scan Engine This is a multi-part message in MIME format. ------=_NextPart_000_000F_01C54F2D.09438630 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable ----- Original Message -----=20 From: WRJJRS@aol.com=20 To: Rotary motors in aircraft=20 Sent: Monday, May 02, 2005 3:25 PM Subject: [FlyRotary] Re: Renesis Build Options In a message dated 5/2/2005 6:54:08 AM Pacific Standard Time, = eanderson@carolina.rr.com writes: Bruce is as great fellow to do business with based on my experience. = Since=20 I elected not to have either done on my engine, I can't comment on = their=20 value. Perhaps if I had the rotors ceramic coated the coolant temps = would=20 be higher and oil temps lower but, my oil temp was at 160-180F and = my=20 coolant temps were at 200-210F, so I don't think ceramic coating = would have=20 done me much good. My understanding is that it shields the rotors = more than=20 any other component from the heat of combustion - so would probably = help=20 keep oil temps cooler. Ed and ALL, One advantage of ceramic coating on the rotary might be to keep the = heat of combustion concentrated in the combustion chamber. The biggest = problem the rotary has is excessive wall area for it's chamber size. = While it may or may not help temps, I don't know, it should improve the = overall efficiency.=20 Bill Jepson=20 Bill, not quite certain how it do that. I can understand that the = rotor being coated would tend to lessen the amount of heat the rotor = would absorb and therefore keep the temp of the oil ,which cools the = rotor, down. But, it then seems that heat has to go/do something. I = agree there should be some increase in overall efficiency by keeping the = temperature of the combustion chamber elevated. However, I believe that = heat has to go somewhere and I think you would see a rise in coolant = temps. But, that's just speculation on my part. Not saying there = aren't some advantages to having them coated - but if like most things = there are probably some disadvantages as well. Ed A ------=_NextPart_000_000F_01C54F2D.09438630 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
 
----- Original Message -----
From:=20 WRJJRS@aol.com
Sent: Monday, May 02, 2005 3:25 = PM
Subject: [FlyRotary] Re: = Renesis Build=20 Options

In a message dated 5/2/2005 6:54:08 AM Pacific Standard Time, eanderson@carolina.rr.com=20 writes:
Bruce is as great fellow to do business with based on = my=20 experience.  Since
I elected not to have either done on my = engine,=20 I can't comment on their
value.  Perhaps if I had the = rotors=20 ceramic coated the coolant temps would
be higher and oil temps = lower=20 but, my oil temp was at 160-180F and my
coolant temps were at = 200-210F,=20 so I don't think ceramic coating would have
done me much good. = My=20 understanding is that it shields the rotors more than
any other=20 component from the heat of combustion - so would probably help =
keep oil=20 temps cooler.
Ed and ALL,
  One advantage of ceramic coating on the rotary might be to = keep=20 the heat of combustion concentrated in the combustion chamber. The = biggest=20 problem the rotary has is excessive wall area for it's chamber size. = While it=20 may or may not help temps, I don't know, it should improve the overall = efficiency.
Bill Jepson
 
Bill, not quite certain how it do that.  I can understand = that the=20 rotor being coated would tend to lessen the amount of heat the rotor = would=20 absorb and therefore keep the temp of the oil ,which cools the rotor,=20 down.  But, it then seems that heat has to go/do something.  = I agree=20 there should be some increase in overall efficiency by keeping the = temperature=20 of the combustion chamber elevated.  However, I believe that heat = has to=20 go somewhere and I think you would see a rise in coolant temps.  = But,=20 that's just speculation on my part.  Not saying there aren't some = advantages to having them coated - but if like most things there are = probably=20 some disadvantages as well.
 
Ed A
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