X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fed1rmmtao104.cox.net ([68.230.241.42] verified) by logan.com (CommuniGate Pro SMTP 5.1.11) with ESMTP id 2222469 for flyrotary@lancaironline.net; Tue, 31 Jul 2007 11:14:35 -0400 Received-SPF: none receiver=logan.com; client-ip=68.230.241.42; envelope-from=alventures@cox.net Received: from fed1rmimpo01.cox.net ([70.169.32.71]) by fed1rmmtao104.cox.net (InterMail vM.7.08.02.01 201-2186-121-102-20070209) with ESMTP id <20070731151356.YOWR23215.fed1rmmtao104.cox.net@fed1rmimpo01.cox.net> for ; Tue, 31 Jul 2007 11:13:56 -0400 Received: from BigAl ([72.192.132.90]) by fed1rmimpo01.cox.net with bizsmtp id WFDv1X0081xAn3c0000000; Tue, 31 Jul 2007 11:13:55 -0400 From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Diffusers Date: Tue, 31 Jul 2007 08:15:57 -0800 Message-ID: <000001c7d38e$14ad31a0$6400a8c0@BigAl> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0001_01C7D34B.0689F1A0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3138 This is a multi-part message in MIME format. ------=_NextPart_000_0001_01C7D34B.0689F1A0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Subject: [FlyRotary] Diffusers =20 What is the conventional wisdom regarding the use of difusers = (injector.) =20 Joe Joe; =20 I put the diffusers in on the primary injectors. On the secondary that = are out in my TWM throttle body I think it not an issue. They are roughly a foot from the port, and upstream of the butterfly, so there is plenty of distance and turbulence for the fuel to vaporize. In the primary port = it is not likely going to make a noticable difference in warm weather when the engine is warmed up; but certainly when cold, the diffusers will deflect = the spray, and add turbulence in the air stream to better diffuse and = vaporize the fuel. Better that than having is on the surfaces of the port and = rotor face. =20 Anyway; that's my take. =20 Al ------=_NextPart_000_0001_01C7D34B.0689F1A0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Subject: [FlyRotary] Diffusers

 

What is the conventional = wisdom regarding the use of difusers (injector.)

 

Joe

Joe;

 

I put the diffusers in on the = primary injectors.  On the secondary that are out in my TWM throttle body I = think it not an issue.  They are roughly a foot from the port, and = upstream of the butterfly, so there is plenty of distance and turbulence for the = fuel to vaporize.  In the primary port it is not likely going to make a = noticable difference in warm weather when the engine is warmed up; but certainly = when cold, the diffusers will deflect the spray, and add turbulence in the = air stream to better diffuse and vaporize the fuel. Better that than having is on = the surfaces of the port and rotor face.

 

Anyway; that’s my = take.

 

Al

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