X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-qa0-f49.google.com ([209.85.216.49] verified) by logan.com (CommuniGate Pro SMTP 5.4.5) with ESMTPS id 5596878 for flyrotary@lancaironline.net; Wed, 13 Jun 2012 08:30:19 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.216.49; envelope-from=rwstracy@gmail.com Received: by qabj40 with SMTP id j40so1104272qab.8 for ; Wed, 13 Jun 2012 05:29:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=subject:references:from:content-type:x-mailer:in-reply-to :message-id:date:to:content-transfer-encoding:mime-version; bh=wpLCOGoONE0DdNil7hR/ID8jrgmVLwjJ53FJUrLxVnc=; b=a+5CwO5VUy2kV9eeTrH2Dt9rxzO8uFNQBkPtdpIyxeBavq82ctk+WywpYcHTxIBO/W sumdyQkx4AAh/R8j80O36bo2q5bO9CHpvjkZTCJ+R+iUQUoJ+kKQK4y4S1Ej/qDEjgDr JzFfwhwARIyYIv2te3fdqUjMIzVc4cdwwUKMqXWdEUcfatU5pST44jc7kt7AWgulHg00 4otQ9y1d7RoW6v+TO5wWe4OLrZkkscwGJjjVeCuAdsB8FMB9Qs8aJSzBwSD3lw8EX03l 51DGRyW+R2LovQJNh4WYDJWi+saUkn339PMiB9ht/E9IvfkPM6n+LOJnZXhOLo34ytEi yBFg== Received: by 10.224.219.211 with SMTP id hv19mr26052581qab.86.1339590583613; Wed, 13 Jun 2012 05:29:43 -0700 (PDT) Return-Path: Received: from [192.168.1.2] (45.sub-166-248-138.myvzw.com. [166.248.138.45]) by mx.google.com with ESMTPS id dr1sm9319582qab.2.2012.06.13.05.29.40 (version=TLSv1/SSLv3 cipher=OTHER); Wed, 13 Jun 2012 05:29:42 -0700 (PDT) Subject: Re: [FlyRotary] Fuel presure question. References: From: Tracy Content-Type: multipart/alternative; boundary=Apple-Mail-1-506131773 X-Mailer: iPad Mail (8F191) In-Reply-To: Message-Id: <7A2F47C7-D043-4061-A6FC-AF157EB59BE3@gmail.com> Date: Wed, 13 Jun 2012 08:29:41 -0400 To: Rotary motors in aircraft Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (iPad Mail 8F191) --Apple-Mail-1-506131773 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii Hmmmm... Mine goes up about a pound when I switch on the second pump. What= happens when you turn both off? Tracy Sent from my iPad On Jun 12, 2012, at 7:11 PM, hoursaway1@comcast.net wrote: > Question about fuel pressure indications, at fast idle 2200 RPM, fuel pres= sure is 42 PSI on EM2, if I switch on the back-up pump with the primary pump= the pressure drops to 35 PSI, can here both pumps running, if I switch off e= ither pump pressure goes back to 42 PSI. My system is 13B, stock red inject= ors all four, pressure regulator is stock Mazda on the end of fuel rail with= vacume connection from dynamic chamber. Thanks, David R. Cook RV6A Rotar= y. --Apple-Mail-1-506131773 Content-Transfer-Encoding: 7bit Content-Type: text/html; charset=utf-8
Hmmmm...  Mine goes up about a pound when I switch on the second pump.  What happens when you turn both off?

Tracy

Sent from my iPad

On Jun 12, 2012, at 7:11 PM, hoursaway1@comcast.net wrote:

Question about fuel pressure indications, at fast idle 2200 RPM, fuel pressure is 42 PSI on EM2, if I switch on the back-up pump with the primary pump the pressure drops to 35 PSI, can here both pumps running, if I switch off either pump pressure goes back to 42 PSI.  My system is 13B, stock red injectors all four, pressure regulator is stock Mazda on the end of fuel rail with vacume connection from dynamic chamber.  Thanks,  David R. Cook  RV6A Rotary.

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