X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 2 [X] Return-Path: Received: from elasmtp-kukur.atl.sa.earthlink.net ([209.86.89.65] verified) by logan.com (CommuniGate Pro SMTP 5.1.7) with ESMTP id 1927176 for flyrotary@lancaironline.net; Sun, 18 Mar 2007 00:59:52 -0400 Received-SPF: none receiver=logan.com; client-ip=209.86.89.65; envelope-from=Dastaten@earthlink.net Received: from [69.91.63.162] (helo=[192.168.0.3]) by elasmtp-kukur.atl.sa.earthlink.net with asmtp (Exim 4.34) id 1HSnU0-0004iM-5P for flyrotary@lancaironline.net; Sun, 18 Mar 2007 00:59:04 -0400 Message-ID: <45FCC717.3060904@earthlink.net> Date: Sat, 17 Mar 2007 23:59:03 -0500 From: David Staten User-Agent: Mozilla Thunderbird 1.0.7 (Windows/20050923) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: Speaking of Mistral....? References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-ELNK-Trace: 9a30bff84e6cb88f95c85d38d22416599ef193a6bfc3dd48f4426f30c379721af8afbec15068d26a379a5ba0fa6c7c04350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 69.91.63.162 Bob White wrote: >Hi Chris, > > >Did Mistral provide the pump and/or regulator? > >Bob W. > > Mistral did not provide the pump or regulator. What was purchased and provided was an intake with runners, integral throttle body, fuel rail with injector bosses and heat shielding that is integral to the fuel rail and mounting. I know what Chris was trying to say, because he and I have discussed this at length, and while its a little difficult to visualize from text only, its an accurate representation of what has transpired, with all the engineering input (reserved input, I might add ) What I have NOW recommended to Chris is that we have a T UPSTREAM of the fuel rail, with the regulator now on the side/rise of the T, and the fuel rail on the distal run of the T, feeding the rail, the pinhole and the fuel return circuit. This will effectively cause the fuel pressure at all points downstream of the T/Regulator assembly to be at the set regulated pressure (this is a manifold referenced fuel pressure regulator). The regulator would have a return from it going to the return circuit as well. Check valves on both return circuits. I've made it explicitly clear to Chris that we do in fact need a regulated fuel supply for our fuel injection to work properly/best. The pinhole by itself does not serve this purpose adequately, becase the fixed pinhole cannot modulate its size to maintain a constant pressure at all throttle and fuel flows. Our set up: Mistral Intake/Fuel rail. Dual Electric fuel pumps, EC2/EM2. Turbo capable. Dave