X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 73 [XX] (40%) SPAMTRICK: obfuscated phone number (40%) BODY: contains "rx" (20%) BODY: text/html email has no html tag Return-Path: Received: from [64.12.137.3] (HELO imo-m22.mail.aol.com) by logan.com (CommuniGate Pro SMTP 5.1.9) with ESMTP id 2061983 for flyrotary@lancaironline.net; Tue, 22 May 2007 18:38:51 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.12.137.3; envelope-from=WRJJRS@aol.com Received: from WRJJRS@aol.com by imo-m22.mx.aol.com (mail_out_v38_r9.2.) id q.c59.1353d33c (52323) for ; Tue, 22 May 2007 18:38:03 -0400 (EDT) Received: from WEBMAIL-RE08 (webmail-re08.webmail.aol.com [152.163.16.157]) by ciaaol-d02.mail.aol.com (v115.11) with ESMTP id MAILCIAAOLD029-cc63465370c936c; Tue, 22 May 2007 18:38:02 -0400 References: To: flyrotary@lancaironline.net Subject: Re: [FlyRotary] 2-cycle oil mix Date: Tue, 22 May 2007 18:38:02 -0400 In-Reply-To: X-MB-Message-Source: WebUI MIME-Version: 1.0 From: wrjjrs@aol.com X-MB-Message-Type: User Content-Type: multipart/alternative; boundary="--------MB_8C96AD8FD9A14A5_1604_24BC_WEBMAIL-RE08.sysops.aol.com" X-Mailer: AOL WebMail 27204 Received: from 65.161.241.3 by WEBMAIL-RE08.sysops.aol.com (152.163.16.157) with HTTP (WebMailUI); Tue, 22 May 2007 18:38:02 -0400 Message-Id: <8C96AD8FD9A14A5-1604-12B1@WEBMAIL-RE08.sysops.aol.com> X-AOL-IP: 152.163.16.157 X-Spam-Flag: NO ----------MB_8C96AD8FD9A14A5_1604_24BC_WEBMAIL-RE08.sysops.aol.com Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Al, The little injection pump isn't very accurate at closed throttle setting= s in any case. That is why the new pumps (RX-8) are electronically=C2=A0cont= rolled for emissions control. (And VERY expensive!) While oil in the fuel se= ems a bit crude, in reality it provides the best all around lube, directly l= inked to desired power output. Bill Jepson -----Original Message----- From: Al Gietzen To: Rotary motors in aircraft Sent: Tue, 22 May 2007 3:36 pm Subject: [FlyRotary] 2-cycle oil mix I guess I=E2=80=99m finding another reason for burning 2-cycle oil rather th= an sump oil injection. =C2=A0On my Velocity the exhaust goes out through the= prop.=C2=A0 It discolors the prop =E2=80=93 not because of temp (I=E2=80= =99ve measured that), and not because of carbon deposits =E2=80=93 but becau= se of brownish, sort of gummy stuff that I=E2=80=99m concluding is partially= burned oil.=C2=A0 Extended Running at low power on the ground, or after a l= ong decsent, there is enough on there, and fluid enough, to actually streak=20= outward a bit from centrifugal force. =C2=A0 It would help, of course, if the OMP setting was coupled to the throttle as=20= in a car, so it would shut off when the throttle is nearly closed; but that=20= is a complication I didn=E2=80=99t include on the plane. =C2=A0 I=E2=80=99m running Castrol 20-50, which is a great lubricating oil, but app= arently it doesn=E2=80=99t burn real well. =C2=A0 Al ________________________________________________________________________ AOL now offers free email to everyone. Find out more about what's free from= AOL at AOL.com. ----------MB_8C96AD8FD9A14A5_1604_24BC_WEBMAIL-RE08.sysops.aol.com Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset="utf-8"
Al, The little injection pump isn't very accurate=20= at closed throttle settings in any case. That is why the new pumps (RX-8) are electronically=C2=A0controlled for emissions control.= (And VERY expensive!) While oil in the fuel seems a bit crude, in reality i= t provides the best all around lube, directly linked to desired power output= .
Bill Jepson


-----Original Message-----
From: Al Gietzen
To: Rotary motors in aircraft
Sent: Tue, 22 May 2007 3:36 pm
Subject: [FlyRotary] 2-cycle oil mix

I guess I=E2=80=99m find= ing another reason for burning 2-cycle oil rather than sump oil injection.=20= =C2=A0On my Velocity the exhaust= goes out through the prop.=C2=A0 It discolors the prop =E2=80=93 not becaus= e of temp (I=E2=80=99ve measured that), and not because= of carbon deposits =E2=80=93 but because of brownish, sort of gummy stuff t= hat I=E2=80=99m concluding is partially burned oil.=C2= =A0 Extended Running at low power on the ground, or after a long decsent, there is enough on there, and fluid enough, to actuall= y streak outward a bit from centrifugal force.
=C2=A0
It would help, of course, if the OMP setting was coupled to the throttle as in a car, so it would sh= ut off when the throttle is nearly closed; but that is a complication I didn=E2=80=99t include on the plane.
=C2=A0
I=E2=80=99m running Castrol 20-50, which is a great lubricating oil, but appare= ntly it doesn=E2=80=99t burn real=20= well.
=C2=A0
Al
AOL now offers free email to everyone. Find out more about what's free from= AOL at AOL.com.
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