X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 5 [X] Return-Path: Received: from access.aic-fl.com ([207.30.253.2] verified) by logan.com (CommuniGate Pro SMTP 5.1.9) with ESMTP id 2062201 for flyrotary@lancaironline.net; Tue, 22 May 2007 21:44:52 -0400 Received-SPF: softfail receiver=logan.com; client-ip=207.30.253.2; envelope-from=unicorn@gdsys.net Received: from main (gdsi-36.gdsys.net [207.30.255.36]) by access.aic-fl.com (Rockliffe SMTPRA 4.5.6) with SMTP id for ; Tue, 22 May 2007 20:40:56 -0500 Message-ID: <004501c79cdb$eadd6fe0$24ff1ecf@main> From: "Richard Sohn" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: 2-cycle oil mix Date: Tue, 22 May 2007 20:44:34 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0042_01C79CB2.017AB840" 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 This is a multi-part message in MIME format. ------=_NextPart_000_0042_01C79CB2.017AB840 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Adapters are still available!! unicorn@gdsys.net=20 Richard Sohn N2071U ----- Original Message -----=20 From: Lehanover@aol.com=20 To: Rotary motors in aircraft=20 Sent: Tuesday, May 22, 2007 8:22 PM Subject: [FlyRotary] Re: 2-cycle oil mix In a message dated 5/22/2007 6:39:25 P.M. Eastern Daylight Time, = wrjjrs@aol.com writes: I=E2=80=99m running Castrol 20-50, which is a great lubricating oil, = but apparently it doesn=E2=80=99t burn real well. Al I believe that Castrol invented multigrade oils. Mutigrades have long chain polymers (plastics) that link up with = temperature increases to change the pour speed of an oil. So 20 weight = oil is doctored with additives to make it pour, or, act like a thicker = oil at operating temperature. So, the 20 in 20-50 is the base oils = actual pour speed or weight. So its 20 weight oil but now not all of it = is oil. Some of it is plastic that neither lubricates or burns well. So = you get a gummy mess when you burn it, and even when you overheat it in = the combustion chamber, and you get stuck apex seals after a long sit = still. So, if you can still get an OMP adapter off of Richard Sohn or = Tracy, use that and run a multi grade in the sump, or a good synthetic = straight weight. And run a good 2 cycle oil in the OMP. No adaptors = available?=20 Drill into the front cover at the lateral oil gallery to the OMP. Weld = on a dash 4 male. Drill into the gallery next to the new fitting and TIG = the gallery closed to engine oil. Connect a dash 4 line to the new = fitting and run it to a bottle of 2 cycle oil on the fire wall. =20 Clean burning oil and a clean engine and prop. A name brand synthetic straight weight in the sump should be 30 weight = up to 220 degrees. Then 40 weight up to 240 degrees. Another advantage of a full = synthetic is it has much less drag than dyno oil for any weight. It = moves easy when cold and can be run colder than a dyno oil of the same = weight. Over heated synthetics are still oil when they cool off. Multi = grade dyno oil becomes black snot.=20 Premixing 2 cycle oil into the fuel is the best for brutal engine use, = but is a pain in the rear. Nobody goes over 10,000 RPM on dyno oil.=20 Lynn E. Hanover=20 -------------------------------------------------------------------------= ----- See what's free at AOL.com.=20 -------------------------------------------------------------------------= ----- No virus found in this incoming message. Checked by AVG Free Edition.=20 Version: 7.5.467 / Virus Database: 269.7.6/813 - Release Date: = 5/20/2007 7:54 AM ------=_NextPart_000_0042_01C79CB2.017AB840 Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: quoted-printable =EF=BB=BF
Adapters are still available!!
 
 
Richard Sohn
N2071U
----- Original Message -----
From:=20 Lehanover@aol.com
Sent: Tuesday, May 22, 2007 = 8:22 PM
Subject: [FlyRotary] Re: = 2-cycle oil=20 mix

In a message dated 5/22/2007 6:39:25 P.M. Eastern Daylight Time, = wrjjrs@aol.com writes:
I=E2=80=99m running=20 Castrol 20-50, which is a great lubricating = oil, but=20 apparently it doesn=E2=80=99t burn real=20 well.
 
Al
I believe that Castrol invented multigrade oils.
 
Mutigrades have long chain polymers (plastics) that link up with=20 temperature increases to change the pour speed of an oil. So 20 weight = oil is=20 doctored with additives to make it pour, or, act like a thicker oil at = operating temperature. So, the 20 in 20-50 is the base oils actual = pour speed=20 or weight. So its 20 weight oil but now not all of it is oil. Some of = it is=20 plastic that neither lubricates or burns well. So you get a gummy mess = when=20 you burn it, and even when you overheat it in the combustion chamber, = and you=20 get stuck apex seals after a long sit still. So, if you can still get = an OMP=20 adapter off of Richard Sohn or Tracy, use that and run a multi grade = in the=20 sump, or a good synthetic straight weight. And run a good 2 cycle oil = in the=20 OMP. No adaptors available?
 
Drill into the front cover at the lateral oil gallery to the OMP. = Weld on=20 a dash 4 male. Drill into the gallery next to the new fitting and TIG = the=20 gallery closed to engine oil. Connect a dash 4 line to the new fitting = and run=20 it to a bottle of 2 cycle oil on the fire wall.  
 
Clean burning oil and a clean engine and prop.
 
A name brand synthetic straight weight in the sump should be 30 = weight up=20 to 220 degrees.
Then 40 weight up to 240 degrees. Another advantage of a full = synthetic=20 is it has much less drag than dyno oil for any weight. It moves easy = when cold=20 and can be run colder than a dyno oil of the same weight. Over heated=20 synthetics are still oil when they cool off. Multi grade dyno oil = becomes=20 black snot.
 
Premixing 2 cycle oil into the fuel is the best for brutal engine = use,=20 but is a pain in the rear.
 
Nobody goes over 10,000 RPM on dyno oil.
 
Lynn E. Hanover 



See what's free at AOL.com.=20

No virus found in this incoming message.
Checked by AVG Free = Edition.
Version: 7.5.467 / Virus Database: 269.7.6/813 - Release = Date:=20 5/20/2007 7:54 AM
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