X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Wed, 14 Dec 2005 12:38:33 -0500 Message-ID: X-Original-Return-Path: Received: from imo-d22.mx.aol.com ([205.188.144.208] verified) by logan.com (CommuniGate Pro SMTP 5.0.4) with ESMTP id 881772 for lml@lancaironline.net; Wed, 14 Dec 2005 10:11:10 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.188.144.208; envelope-from=REHBINC@aol.com Received: from REHBINC@aol.com by imo-d22.mx.aol.com (mail_out_v38_r6.3.) id q.209.f12b385 (17377) for ; Wed, 14 Dec 2005 10:09:54 -0500 (EST) From: REHBINC@aol.com X-Original-Message-ID: <209.f12b385.30d18fc1@aol.com> X-Original-Date: Wed, 14 Dec 2005 10:09:53 EST Subject: Re: [LML] Re: Air filters X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1134572993" X-Mailer: 9.0 for Windows sub 5120 X-Spam-Flag: NO -------------------------------1134572993 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit In a message dated 12/14/2005 7:56:37 AM Eastern Standard Time, Sky2high@aol.com writes: Try this, Your engine is an air pump. For a 4 cylinder aircraft engine each revolution has 1 cylinder drawing in air, 1 compressing air, 1 firing and 1 exhausting combustion products. Thus, 1 revolution consumes 1/4 x 360 cubic inches or 90 ci or .625 cubic feet. At 2700 rpm and WOT, that's 2700 x .675 cf or 1688 cfm. Lbs/Hr depends on air density. Scott, Further to my last post and in answer to my own question, you appear to have divided cubic inches by 144 to get cubic feet. Should have divided by 12 cubed or 1728. I did the same thing, which results in 12 times too much carburator. I think we've been out of school too long. Rob -------------------------------1134572993 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

In a message dated 12/14/2005 7:56:37 AM Eastern Standard Time, Sky2hig= h@aol.com writes:

Try this,

Your engine is an air pump. For a 4 c= ylinder aircraft engine each revolution has 1 cylinder drawing in air, 1 com= pressing air, 1 firing and 1 exhausting combustion products. Thus= , 1 revolution consumes 1/4 x 360 cubic inches or 90 ci or .625 cubic feet.=20= At 2700 rpm and WOT, that's 2700 x .675 cf or 1688 cfm. Lbs/Hr depends= on air density.

Scott,

Further to my last post and in answer to my own question, you appear to= have divided cubic inches by 144 to get cubic feet. Should have divided by=20= 12 cubed or 1728. I did the same thing, which results in 12 times too much c= arburator.

I think we've been out of school too long.

Rob

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