X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from web38906.mail.mud.yahoo.com ([209.191.125.112] verified) by logan.com (CommuniGate Pro SMTP 5.1.10) with SMTP id 2130222 for flyrotary@lancaironline.net; Wed, 20 Jun 2007 18:19:30 -0400 Received-SPF: none receiver=logan.com; client-ip=209.191.125.112; envelope-from=roundrocktom@yahoo.com Received: (qmail 74186 invoked by uid 60001); 20 Jun 2007 22:18:53 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=X-YMail-OSG:Received:Date:From:Subject:To:MIME-Version:Content-Type:Content-Transfer-Encoding:Message-ID; b=ko5CV2zduwvIb+68kkkY3CJPUligv+rrgwtRnnTVkY43lS2ioGHwrOFPh26C0kHWepQFVcOUrBgjDYgEOkwaGEPiNSmelujVuhKYI4J50TnhLeb+pNqv//gXpc3HMoMgVMRjx46KyXJHvMAs/ooDijhW22ftIQhffUxaeSGotlc=; X-YMail-OSG: l1PjulkVM1mV4efoMvRb0XNKokbl4qY3ZmtbH.UGrtcbKNz1VRFS2uzA3RWKL7aIbzcXdEW_uxrPdpDaqxXCq2t.I0saRieH_6eGuSQ7ALJEI2lsMbgRE1cWdA-- Received: from [216.30.135.34] by web38906.mail.mud.yahoo.com via HTTP; Wed, 20 Jun 2007 15:18:52 PDT Date: Wed, 20 Jun 2007 15:18:52 -0700 (PDT) From: thomas walter Subject: Renesis Engine - Oil Foaming Cure To: flyrotary@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="0-873769288-1182377932=:71093" Content-Transfer-Encoding: 8bit Message-ID: <21676.71093.qm@web38906.mail.mud.yahoo.com> --0-873769288-1182377932=:71093 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit There was a discussion a few days ago about the early production Renesis Engine having an issue with oil foaming. Talked with a friend about that, as I didn't know the solution. I believe the oil foaming was fixed with a new dipstick. Yes, Lower the oil level until it stops foaming. The problem occurs when the oil contacts the front counterweight. In addition to foaiming, there is an additional parasitic power loss of up to 20 hp when the oil level is too high One of the other things that came up was the issue of the oil injection pump. With low rpm the engine ECU controls the amount injected. Since the Renesis doesn't have a periphal port, it can not eject a carbon build up. Not an issue with the ECU controlled oil injection pump, but he didn't recommend using older injection pumps for this reason. The carbon loading is more likely to occur under light loading, so may not be an issue for aviation engines. Still long taxi times may mean were are better off with a good quality two stroke oil and premixing. Also he made it clear that his company does not promote Rotary Engine for aviation. I just need to get to Japan and provide enough Sake to learn anything more. :) Funny story, but our host in Japan had made an error in translating "Corporate Director of Engineering" to "Corporate Drinker of Engineering". I.e. the Engineer who can drink anyone under the table. Oh my. So I need to return and bring our Corporate Drinker along. :) Tom --------------------------------- Don't get soaked. Take a quick peak at the forecast with theYahoo! Search weather shortcut. --0-873769288-1182377932=:71093 Content-Type: text/html; charset=iso-8859-1 Content-Transfer-Encoding: 8bit
There was a discussion a few days ago about the early production Renesis Engine having an issue with oil foaming. Talked with a friend about that, as I didn't know the solution.
 
I believe the oil foaming was fixed with a new dipstick. Yes, Lower the oil level until it stops foaming. The problem occurs when the oil contacts the front counterweight. In addition to foaiming, there is an additional  parasitic power loss of up to 20 hp when the oil level is too high
 
One of the other things that came up was the issue of the oil injection pump. With low rpm the engine ECU controls the amount injected. Since the Renesis doesn't have a periphal port, it can not eject a carbon build up. Not an issue with the ECU controlled oil injection pump, but he didn't recommend using older injection pumps for this reason.  The carbon loading is more likely to occur under light loading, so may not be an issue for aviation engines. Still long taxi times may mean were are better off with a good quality two stroke oil and premixing.
 
Also he made it clear that his company does not promote Rotary Engine for aviation.   I just need to get to Japan and provide enough Sake to learn anything more. :)  Funny story, but our host in Japan had made an error in translating "Corporate Director of Engineering" to "Corporate Drinker of Engineering".  I.e. the Engineer who can drink anyone under the table.  Oh my. So I need to return and bring our Corporate Drinker along. :)
 
Tom 


Don't get soaked. Take a quick peak at the forecast
with theYahoo! Search weather shortcut. --0-873769288-1182377932=:71093--