Return-Path: Sender: (Marvin Kaye) To: flyrotary Date: Thu, 13 Mar 2003 19:10:55 -0500 Message-ID: X-Original-Return-Path: Received: from [65.54.169.110] (HELO hotmail.com) by logan.com (CommuniGate Pro SMTP 4.0.6) with ESMTP id 2051619 for flyrotary@lancaironline.net; Thu, 13 Mar 2003 13:26:02 -0500 Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Thu, 13 Mar 2003 10:26:01 -0800 X-Originating-IP: [65.137.51.100] Reply-To: "Tracy Crook" From: "Tracy Crook" X-Original-To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Fuel Injection X-Original-Date: Thu, 13 Mar 2003 12:35:01 -0500 Organization: Real World Solutions Inc. MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0077_01C2E95C.F7F3AC80" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1106 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 X-Original-Message-ID: X-OriginalArrivalTime: 13 Mar 2003 18:26:01.0983 (UTC) FILETIME=[005280F0:01C2E98E] This is a multi-part message in MIME format. ------=_NextPart_000_0077_01C2E95C.F7F3AC80 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable ----- Original Message -----=20 From: sqpilot@earthlink=20 To: Rotary motors in aircraft=20 Sent: Thursday, March 13, 2003 7:39 AM Subject: [FlyRotary] Fuel Injection Hi, fellow rotary enthusiasts. I'm directing this question primarily = to Rusty, as he has a similar Dave Atkins fuel system such as I have, = but I certaintly welcome comments from any and all. My TWM throttle body I purchased from Dave Atkins has two = injectors already installed on the throttle body. It also has the fuel = rail, and I have still in the box, the fuel pressure requlator. I assume = that my fuel flow will go from the tank, through the fuel tank selector = valve to the fuel pump, then through the pressure regulator, to the = injectors. My question is.....do I need to allow a return to the fuel = tank for unused or excess fuel? If so, do I take it from the fuel rail = opposite the pressure requlator? I am, unfortunately, a complete layman = when it comes to fuel injection, so please be gentle on me. I noted = that on the injectors that came with my engine, that the injectors have = a small tube protuding 90 degrees from the injector, which I assume was = for the purpose of returning fuel to the tank? Thanks in advance for = everyone who takes the time to educate/enlighten me regarding the fuel = injection system. I sincerely appreciate the help. =20 Paul Conner, 13B powered SQ2000 canard under constructrion.=20 Paul, the usual EFI plumbing has the regulator as the last point on = the fuel rails. The return port should be on the regulator itself. = Yes, you absolutely need a separate return port on your fuel tank. I have no idea what the 90- degree pipe is on your injectors. Never = saw one like that before. Tracy ------=_NextPart_000_0077_01C2E95C.F7F3AC80 Content-Type: text/html; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable
 
----- Original Message -----
From:=20 sqpilot@earthlink
Sent: Thursday, March 13, 2003 = 7:39=20 AM
Subject: [FlyRotary] Fuel = Injection

Hi, fellow rotary enthusiasts.  = I'm=20 directing this question primarily to Rusty, as he has a similar Dave = Atkins=20 fuel system such as I have, but I certaintly welcome comments from any = and=20 all.
      My TWM = throttle=20 body I purchased from Dave Atkins has two injectors already installed = on the=20 throttle body. It also has the fuel rail, and I have still in the box, = the=20 fuel pressure requlator. I assume that my fuel flow will go from = the=20 tank, through the fuel tank selector valve to the fuel pump, then = through the=20 pressure regulator, to the injectors.  My question is.....do I = need to=20 allow a return to the fuel tank for unused or excess fuel?  If = so, do I=20 take it from the fuel rail opposite the pressure requlator? I am,=20 unfortunately, a complete layman when it comes to fuel injection, so = please be=20 gentle on me.  I noted that on the injectors that came with my = engine,=20 that the injectors have a small tube protuding 90 degrees from the = injector,=20 which I assume was for the purpose of returning fuel to the = tank?  Thanks=20 in advance for everyone who takes the time to educate/enlighten me = regarding=20 the fuel injection system. I sincerely appreciate the help. =20
 
Paul Conner, 13B powered SQ2000 = canard under=20 constructrion.
 
Paul, the usual EFI plumbing has the = regulator as=20 the last point on the fuel rails.  The return port should be on = the=20 regulator itself.  Yes, you absolutely need a separate return = port on=20 your fuel tank.
 
I have no idea what the 90- degree = pipe is on=20 your injectors.  Never saw one like that before.
 
Tracy
 
------=_NextPart_000_0077_01C2E95C.F7F3AC80--