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 [64.12.136.171] (HELO imo-m12.mail.aol.com) by logan.com (CommuniGate Pro SMTP 5.1.9) with ESMTP id 2062035 for flyrotary@lancaironline.net; Tue, 22 May 2007 19:24:04 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.12.136.171; envelope-from=BMears9413@aol.com Received: from BMears9413@aol.com by imo-m12.mx.aol.com (mail_out_v38_r9.2.) id q.ca3.fef78c2 (52624) for ; Tue, 22 May 2007 19:23:19 -0400 (EDT) Received: from WEBMAIL-DF03 (webmail-df03.webmail.aol.com [205.188.104.67]) by cia-d12.mx.aol.com (v115.11) with ESMTP id MAILCIAD122-cd9046537b6727d; Tue, 22 May 2007 19:23:19 -0400 References: To: flyrotary@lancaironline.net Subject: Re: [FlyRotary] Re: 2-cycle oil mix Date: Tue, 22 May 2007 19:23:19 -0400 In-Reply-To: X-MB-Message-Source: WebUI MIME-Version: 1.0 From: bmears9413@aol.com X-MB-Message-Type: User Content-Type: multipart/alternative; boundary="--------MB_8C96ADF512DEC62_C80_28FB_WEBMAIL-DF03.sysops.aol.com" X-Mailer: AOL WebMail 27204 Received: from 65.182.71.8 by WEBMAIL-DF03.sysops.aol.com (205.188.104.67) with HTTP (WebMailUI); Tue, 22 May 2007 19:23:19 -0400 Message-Id: <8C96ADF512DEC62-C80-15A7@WEBMAIL-DF03.sysops.aol.com> X-AOL-IP: 205.188.104.67 X-Spam-Flag: NO ----------MB_8C96ADF512DEC62_C80_28FB_WEBMAIL-DF03.sysops.aol.com Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" You guys proubly dont remember, or just wern't around rotary's back in the d= ay....but the 74 through 85's had a little mechanical oil injection pump. Yo= u could set it to your throttle position and control how much oil they injec= ted. this was back in the old carburated days. I havent tried it myself, but= I would bet it wouldnt be hard to mount one of these on a newer motor. The=20= 73 and earlier had the same pump but it had a different bolt pattern and I d= ont think they would work. I might even have an old one laying around. I'll=20= try to get a pic. Bob Mears Supermarine Spitfire -----Original Message----- From: wrjjrs@aol.com To: Rotary motors in aircraft Sent: Tue, 22 May 2007 5:38 pm Subject: [FlyRotary] Re: 2-cycle oil mix 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=20 To: Rotary motors in aircraft=20 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=20= AOL at AOL.com. ________________________________________________________________________ AOL now offers free email to everyone. Find out more about what's free from= AOL at AOL.com. ----------MB_8C96ADF512DEC62_C80_28FB_WEBMAIL-DF03.sysops.aol.com Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset="utf-8" You guys proubly dont remember, or just wern't around rotary's back in the d= ay....but the 74 through 85's had a little mechanical oil injection pump. Yo= u could set it to your throttle position and control how much oil they injec= ted. this was back in the old carburated days. I havent tried it myself, but= I would bet it wouldnt be hard to mount one of these on a newer motor. The=20= 73 and earlier had the same pump but it had a different bolt pattern and I d= ont think they would work. I might even have an old one laying around. I'll=20= try to get a pic.

Bob Mears
Supermarine Spitfire


-----Original Message-----
From: wrjjrs@aol.com
To: Rotary motors in aircraft
Sent: Tue, 22 May 2007 5:38 pm
Subject: [FlyRotary] Re: 2-cycle oil mix

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