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 930649 for flyrotary@lancaironline.net; Mon, 02 May 2005 22:18:02 -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 j432HFL5009812 for ; Mon, 2 May 2005 22:17:16 -0400 (EDT) Message-ID: <001d01c54f86$3b0ee110$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Renesis Build Options Date: Mon, 2 May 2005 22:17:18 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_001A_01C54F64.B3CDA590" 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_001A_01C54F64.B3CDA590 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MessageThat's interesting, Rusty I have noticed that my coolant temp is up and my EGT is down (about 100 = - 150F) over the old engine. I am speculating that the rise in coolant = temp and decrease in EGT MAY be due to better combustion (less blow-by = of gas into the exhaust) - but a little early to tell. Once the engine = has about 10 flying hours on it, the status should stabilize. The = coolant temp has come down about 5 -10F over what it was when I = initially fired up the engine. I hate to think that much heat increase is due to the friction of = breaking in all the seals. I am trying something different this time, I = am breaking the engine in using Mobile 1 Synthetic oil rather than the = mineral oil as I did previously. =20 Went to auto store to see if I could find a S&B filter - they once had = them, but had stopped carrying them. Claimed they were good filters. = Was going to check for me and see if anyone else in the local area = carried them. Might just end up with a K&N as they are probably easier = to find almost anywhere. But, I liked the funnel shaped inlet to the TB = that the S&B had and the K&N did not. Got to get that filter on before = Leon gets on my case {:>) Hope your water is going down Ed ----- Original Message -----=20 From: Russell Duffy=20 To: Rotary motors in aircraft=20 Sent: Monday, May 02, 2005 9:36 PM Subject: [FlyRotary] Re: Renesis Build Options 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. =20 Interesting thought. Two things have happened with the recent engine, = one of which I've only mentioned to Tracy. First, the low oil temp, but = that's only partially due to the ceramic coating. The other is a rise = in EGT's. I've had a problem keeping EGT's below 1750 in climb since = the rebuild. It never dawned on me that some of this might be due to = heat that didn't go into the oil. Hmmmmm As for the balancing, I already chimed in on that over the backwards = plastic plane site. I've heard tale that the Renesis rotors aren't = nearly as consistent as the 13B rotors were in weight. I know that = Bruce was not really suggesting balancing in the past, but maybe the = Renesis can make better use of a balancing job. Mind you this is pure = speculation. For $350, and no inconvenience, there's no doubt I'd get = any engine balanced. =20 Cheers, Rusty ------=_NextPart_000_001A_01C54F64.B3CDA590 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message
That's interesting, Rusty
 
I have noticed that my coolant temp is up and my EGT is down (about = 100 -=20 150F) over the old engine.  I am speculating that the rise in = coolant temp=20 and decrease in EGT MAY be due to better combustion (less blow-by of gas = into=20 the exhaust) - but a little early to tell.  Once the engine has = about 10=20 flying hours on it, the status should stabilize.  The coolant temp = has come=20 down about 5 -10F over what it was when I initially fired up the = engine.
 
I hate to think that much heat increase is due to the friction of = breaking=20 in all the seals.  I am trying something different this time, I am = breaking=20 the engine in using Mobile 1 Synthetic oil rather than the mineral oil = as I did=20 previously. 
 
Went to auto store to see if I could find a S&B filter - they = once had=20 them, but had stopped carrying them.  Claimed they were good = filters. =20 Was going to check for me and see if anyone else in the local area = carried=20 them.  Might just end up with a K&N as they are probably easier = to find=20 almost anywhere.  But, I liked the funnel shaped inlet to the TB = that the=20 S&B had and the K&N did not.  Got to get that filter on = before Leon=20 gets on my case {:>)
 
Hope your water is going down
 
Ed
----- Original Message -----
From:=20 Russell=20 Duffy
Sent: Monday, May 02, 2005 9:36 = PM
Subject: [FlyRotary] Re: = Renesis Build=20 Options

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=20 temps.   
 
Interesting=20 thought.  Two things have happened with the recent = engine, one=20 of which I've only mentioned to Tracy.  First, the low oil = temp, but=20 that's only partially due to the ceramic coating.  The other is a = rise in=20 EGT's.  I've had a problem keeping EGT's below  1750 in = climb since=20 the rebuild.  It never dawned on me that some of this might be = due to=20 heat that didn't go into the = oil.  Hmmmmm
 
As for the=20 balancing, I already chimed in on that over the backwards plastic = plane=20 site.  I've heard tale that the Renesis rotors aren't nearly as=20 consistent as the 13B rotors were in weight.  I know that = Bruce was=20 not really suggesting balancing in the past, but maybe the = Renesis=20 can make better use of a balancing job.  Mind you this is = pure=20 speculation.   For $350, and no inconvenience, there's = no doubt=20 I'd get any engine balanced.  
 
Cheers,
Rusty
  
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