X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-vx0-f180.google.com ([209.85.220.180] verified) by logan.com (CommuniGate Pro SMTP 5.4.1) with ESMTPS id 5109042 for flyrotary@lancaironline.net; Wed, 31 Aug 2011 00:07:14 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.220.180; envelope-from=david.staten@gmail.com Received: by vxh15 with SMTP id 15so162733vxh.25 for ; Tue, 30 Aug 2011 21:06:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:subject:references :in-reply-to:content-type; bh=8e0LNQv/9+uibPKFbcaKOGKVoS9FWYyLAu1c7HOv/5k=; b=U+TppnG1xKNZyfOvlRtC4DMeWo5jeKgW9bTgAERtiNCsUhtpF32AXCrqzc1UOzAcc4 l3r3aau/3KY4gaP37ytcB1Uqw8WHYNal2Bj5NwBqyNp1UAdkDEmENJhMM7vOUQV79saL hHQItcFIWtIdf/kaYVQdp9p2uppMUzZfOGBgc= Received: by 10.52.94.18 with SMTP id cy18mr5108050vdb.101.1314763597955; Tue, 30 Aug 2011 21:06:37 -0700 (PDT) Return-Path: Received: from [127.0.0.1] ([216.80.140.47]) by mx.google.com with ESMTPS id k10sm4115890vdi.19.2011.08.30.21.06.36 (version=TLSv1/SSLv3 cipher=OTHER); Tue, 30 Aug 2011 21:06:37 -0700 (PDT) Message-ID: <4E5DB351.3030706@gmail.com> Date: Tue, 30 Aug 2011 23:06:41 -0500 From: Dave User-Agent: Mozilla/5.0 (Windows NT 6.0; rv:6.0) Gecko/20110812 Thunderbird/6.0 MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: CG Products Intake Manifold References: In-Reply-To: Content-Type: multipart/alternative; boundary="------------090200090303020703070101" This is a multi-part message in MIME format. --------------090200090303020703070101 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit No... at the flows and pressures we are using (and barring any major obstructions between the regulator and the injectors), the regulator can be anywhere in the circuit and adequately regulate the pressure. On Chris Barber's install, I purchased the Mistral intake for use on his engine. The fuel rail was a dead end tube with a pinhole on the end. Presumably the pinhole was to prevent vapor lock in the fuel rail. The regulator HAD to be upstream of the injectors when using the intake. We had stable fuel pressures and no problems getting fuel to the engine. We had return lines from the pinhole end of the rail, as well as from the pressure regulator, that fed back to the sump tank. Since there were not check valves running from the wings to the sump, there was no chance of pressurizing the sump. Dave On 8/30/2011 10:30 PM, CozyGirrrl@aol.com wrote: > Ed, I must have mispoke to give this impression, I thought the > pressure reg HAD TO be last in line to maintain pressure in the fuel rail? > Chrissi & Randi > www.CozyGirrrl.com > CG Products, Custom Aircraft Hardware > Chairwomen, Sun-N-Fun Engine Workshop > In a message dated 8/30/2011 10:13:53 P.M. Central Daylight Time, > eanderson@carolina.rr.com writes: > > If the pressure regulator is place before the injectors then > there is less fresh fuel flowing through the rails. > --------------090200090303020703070101 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit No... at the flows and pressures we are using (and barring any major obstructions between the regulator and the injectors), the regulator can be anywhere in the circuit and adequately regulate the pressure.

On Chris Barber's install, I purchased the Mistral intake for use on his engine. The fuel rail was a dead end tube with a pinhole on the end. Presumably the pinhole was to prevent vapor lock in the fuel rail. The regulator HAD to be upstream of the injectors when using the intake. We had stable fuel pressures and no problems getting fuel to the engine.

We had return lines from the pinhole end of the rail, as well as from the pressure regulator, that fed back to the sump tank. Since there were not check valves running from the wings to the sump, there was no chance of pressurizing the sump.

Dave

On 8/30/2011 10:30 PM, CozyGirrrl@aol.com wrote:
Ed, I must have mispoke to give this impression, I thought the pressure reg HAD TO be last in line to maintain pressure in the fuel rail?
 
 
Chrissi & Randi
www.CozyGirrrl.com
CG Products, Custom Aircraft Hardware
Chairwomen, Sun-N-Fun Engine Workshop
 
In a message dated 8/30/2011 10:13:53 P.M. Central Daylight Time, eanderson@carolina.rr.com writes:
  If the pressure regulator is place before the injectors then there is less fresh fuel flowing through the rails. 

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