X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fed1rmmtao101.cox.net ([68.230.241.45] verified) by logan.com (CommuniGate Pro SMTP 5.1.10) with ESMTP id 2165412 for flyrotary@lancaironline.net; Sun, 08 Jul 2007 12:01:13 -0400 Received-SPF: none receiver=logan.com; client-ip=68.230.241.45; envelope-from=alventures@cox.net Received: from fed1rmimpo02.cox.net ([70.169.32.72]) by fed1rmmtao101.cox.net (InterMail vM.7.08.02.01 201-2186-121-102-20070209) with ESMTP id <20070708160033.TEVK17683.fed1rmmtao101.cox.net@fed1rmimpo02.cox.net> for ; Sun, 8 Jul 2007 12:00:33 -0400 Received: from BigAl ([72.192.132.90]) by fed1rmimpo02.cox.net with bizsmtp id M40a1X00E1xAn3c0000000; Sun, 08 Jul 2007 12:00:34 -0400 From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: OMP flow rate Date: Sun, 8 Jul 2007 09:01:46 -0800 Message-ID: <000401c7c181$ab1a06a0$6400a8c0@BigAl> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0005_01C7C13E.9CF6C6A0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3138 In-reply-to: Importance: Normal This is a multi-part message in MIME format. ------=_NextPart_000_0005_01C7C13E.9CF6C6A0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable Al, I can't remember the rate but it would be something like 100:1 to the = fuel, even less if memory serves me correctly, maybe 150:1. However the mechanical OMP has two settings one low at low rpm and them = full on at about 2,000 rpm.=20 I doubt if the OMP speed to the crank speed would be of much use- = Richard Sohn knows the in's and out's of this ( excuse the pun). George ( down under)=20 =20 Using Richards data, I come up with about 130:1 for my engine at about = 5000 rpm. It seems to make sense. Thanks, Richard. =20 Al =20 =20 ----- Original Message -----=20 From: Al Gietzen =20 To: Rotary motors in aircraft=20 Sent: Friday, July 06, 2007 10:12 AM Subject: [FlyRotary] OMP flow rate =20 Does anyone know what the flow rate is from the OMP? Unfortunately, I don't know what year the pump is from. It is on my 20B which has a 12A front cover. It is a 4-port, likely from a 13B, in = which one port has been blocked and the other three go one to each rotor = housing. =20 The only data I have on hand is what Richard measured some years ago, running the pump at 6000 rpm. This could useful if I knew the ratio of = pump speed to eccentric shaft speed. =20 Thanks, =20 Al ------=_NextPart_000_0005_01C7C13E.9CF6C6A0 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

Al,

I can't remember the rate = but it would be something like 100:1 to the fuel, even less if memory serves me correctly, maybe 150:1.

However the mechanical OMP = has two settings one low at low rpm and them full on at about 2,000 rpm. =

I doubt if the OMP speed to = the crank speed would be of much use- Richard Sohn knows the in's and out's = of this ( excuse the pun).

George ( down = under) 

 

Using Richards data, I come up = with about 130:1 for my engine at about 5000 rpm.  It seems to make = sense.  Thanks, Richard.

 

Al

 

 

=

----- Original Message = -----

From: Al = Gietzen

Sent: Friday, July 06, 2007 10:12 AM

Subject: [FlyRotary] OMP flow rate

 

Does anyone know what the = flow rate is from the OMP?

Unfortunately, I = don’t know what year the pump is from.  It is on my 20B which has a 12A front = cover.  It is a 4-port, likely from a 13B, in which one port has been = blocked and the other three go one to each rotor housing.

 

The only data I have on = hand is what Richard measured some years ago, running the pump at 6000 rpm. =  This could useful if I knew the ratio of pump speed to eccentric shaft = speed.

 

Thanks,

 

Al

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