X-Virus-Scanned: clean according to Sophos on Logan.com From: "Charlie England" Received: from mail-ot0-f171.google.com ([74.125.82.171] verified) by logan.com (CommuniGate Pro SMTP 6.2c1) with ESMTPS id 9581811 for flyrotary@lancaironline.net; Fri, 17 Mar 2017 21:48:50 -0400 Received-SPF: pass receiver=logan.com; client-ip=74.125.82.171; envelope-from=ceengland7@gmail.com Received: by mail-ot0-f171.google.com with SMTP id a12so36756886ota.0 for ; Fri, 17 Mar 2017 18:48:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:references:from:message-id:date:user-agent:mime-version :in-reply-to; bh=7h+82BknDOe4Z9Lem1Pl5nHIwNuFD5sV8PXhhhdc5Ww=; b=XqvKEDlGOrE6b541SMCFKc0dwQL6TCRT5d/4YDF8GlfUMVj+iv6bL1JT6Dcw0MOcmQ cnR+x32p1j8LD2IFHvQMuX04QEU0FvAk5QnY4/6vofkAkQvsukew049DtU0NCdOSDjRm IBdZjXB14aKew6m45VpdrsofZmsF+sK0AuxZk8JJtB9bs3+PzXklWdvGga8ukImGfdNn w9u93jDtnE4Mgc35bL4Z6qd7utPZrAG2dao78uByO6i0FbpDSFI0AcLW7LVlXTnXV1Qp AmVtnn8vZn/OsAk75pGxldkAnm65uDQjuyZrFengdyDL631ZXn3pExm1RQWkTUgVujRE VmxQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to; bh=7h+82BknDOe4Z9Lem1Pl5nHIwNuFD5sV8PXhhhdc5Ww=; b=lPrfUPe0bZpo+vm69Qf+Q19lWzB6YIAcJrxBDmKQr3yqmuaBa/paav1vNSFQ7IMT4M M/cFmMwZcG+X49X7D0PINCuZizgDH/Lq/eDNvK7ZsCD0nk28S3zVUVrp3MN/gK/2tj5X f3RvE9A7cplEzfGBOtbGEeV9v7XiLiJGpETAdc3su1Wn841kIAsY6NZwmFVC9ogbDsPF BIOLVu02Bj4oMsvoJpXlCh24+Ga066YPOZtAc4yRKvLBOGWwzQInZHZISgAehQY4YbDy ka++cCj1sVUp703JcrYhPRxaIZ+5YZ+WsbwHk8i5dbcekzpz3VvBtXTWdVLlLpttxwmT B0Rg== X-Gm-Message-State: AFeK/H0jl8menjxVtzaeGKbYrtx+0AkrtwuVYkMRpdx3ATq0uzE+9cpIWovVhhM0VeNFzQ== X-Received: by 10.157.10.65 with SMTP id 59mr3255074otg.276.1489801713368; Fri, 17 Mar 2017 18:48:33 -0700 (PDT) Return-Path: Received: from ?IPv6:2602:306:25fb:1599:98d2:f9bb:a68b:4314? ([2602:306:25fb:1599:98d2:f9bb:a68b:4314]) by smtp.googlemail.com with ESMTPSA id k205sm1646917oih.0.2017.03.17.18.48.31 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 17 Mar 2017 18:48:32 -0700 (PDT) Subject: Re: [FlyRotary] Re: Fuel Pump and Regulator To: Rotary motors in aircraft References: Message-ID: <5ce999ea-fa90-c3bb-b59c-8a0525b0cf9c@gmail.com> Date: Fri, 17 Mar 2017 20:50:23 -0500 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 MIME-Version: 1.0 In-Reply-To: Content-Type: multipart/alternative; boundary="------------908F52F12E21D402EB61CB1D" This is a multi-part message in MIME format. --------------908F52F12E21D402EB61CB1D Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 8bit OK, found it. I've got a similar model I bought as a transfer pump. I'm always looking at what others have done successfully; you never know what might work better. :-) Charlie On 3/17/2017 6:34 PM, Steven W. Boese wrote: > > Charlie, > > > I checked the boxes that the pumps came in and the number is 2P74028. > > > I missed the "7". Hopefully that is a good number yet. > > > Steve > > ------------------------------------------------------------------------ > *From:* Rotary motors in aircraft on > behalf of Charlie England > *Sent:* Friday, March 17, 2017 2:34:14 PM > *To:* Rotary motors in aircraft > *Subject:* [FlyRotary] Re: Fuel Pump and Regulator > Hey Steve, not to hijack the thread, but which pump is that? I can't > find that # on the NAPA web site. > > Thanks, > > Charlie > > On Fri, Mar 17, 2017 at 12:34 PM, Steven W. Boese > > wrote: > > Steve, > > > I used a stock Mazda 1986 fuel pressure regulator, two NAPA 2P4028 > fuel pumps in parallel, and an Andair duplex fuel selector valve. > The fuel lines are -6 (3/8") except that the fuel return to one of > the tanks has an additional 3 ft of -4 (1/4") aluminum tubing. > The fuel pumps each move 47 gal/hr against a 7 psi head. > > > The fuel pressure in the rail is 38 psi when either pump is > running. The current draw from either pump is 6 amps. > > > When both pumps are running, the fuel pressure in the rail is 39.1 > psi when the tank without the additional 1/4" return tubing is > selected and 39.6 psi when the tank with the additional 1/4" > return tubing is selected. The current draw from both pumps is 12 > amps. > > > Since with my setup running both pumps only increases the pressure > by about 1 psi, and the 3 ft of 1/4" tubing only adds about 0.5 > psi of back pressure with both pumps running, it might be worth > checking for a restriction somewhere in your system. > > > Steve Boese > > > ------------------------------------------------------------------------ > *From:* Rotary motors in aircraft > on behalf of steve Izett > > > *Sent:* Friday, March 17, 2017 3:44:46 AM > *To:* Rotary motors in aircraft > *Subject:* [FlyRotary] Fuel Pump and Regulator > Hi Guys > > I fired up my secondary fuel pump for the first time today and > was met with what I didn’t expect. > Instead of seeing a blip in the fuel pressure, I had a 10psi > increase and high current draw from the pump which blew its 10amp > fuse. > I’ll up the fuse as its too low me thinks. > > I used an old fuel regulator I had on a rail. It was of a Toyota > 4AGE engine of about 135hp. > Seems like its not able to bypass enough fuel with both pumps running. > > I think I need to install a higher power adjustable regulator. > What experience do you guys have with turning both pumps on > simultaneously? > > I’m putting a pressure switch in the circuit to turn on the backup > pump if the fuel pressure drops below a preset level. > > Appreciate your thoughts and experience. > > Steve Izett > Genesis 4 port EC3 EM3 RD1C in a Glasair Super II RG still nearly > finished! > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: > http://mail.lancaironline.net:81/lists/flyrotary/List.html > > > --------------908F52F12E21D402EB61CB1D Content-Type: text/html; charset=windows-1252 Content-Transfer-Encoding: 8bit
OK, found it. I've got a similar model I bought as a transfer pump.

I'm always looking at what others have done successfully; you never know what might work better. :-)

Charlie

On 3/17/2017 6:34 PM, Steven W. Boese wrote:

Charlie,


I checked the boxes that the pumps came in and the number is 2P74028.


I missed the "7".  Hopefully that is a good number yet.


Steve

From: Rotary motors in aircraft <flyrotary@lancaironline.net> on behalf of Charlie England <flyrotary@lancaironline.net>
Sent: Friday, March 17, 2017 2:34:14 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Fuel Pump and Regulator
 
Hey Steve, not to hijack the thread, but which pump is that? I can't find that # on the NAPA web site.

Thanks,

Charlie

On Fri, Mar 17, 2017 at 12:34 PM, Steven W. Boese <flyrotary@lancaironline.net> wrote:

Steve,


I used a stock Mazda 1986 fuel pressure regulator, two NAPA 2P4028 fuel pumps in parallel, and an Andair duplex fuel selector valve. The fuel lines are -6 (3/8") except that the fuel return to one of the tanks has an additional 3 ft of -4 (1/4") aluminum tubing.  The fuel pumps each move 47 gal/hr against a 7 psi head.


The fuel pressure in the rail is 38 psi when either pump is running.  The current draw from either pump is 6 amps.


When both pumps are running, the fuel pressure in the rail is 39.1 psi when the tank without the additional 1/4" return tubing is selected and 39.6 psi when the tank with the additional 1/4" return tubing is selected.  The current draw from both pumps is 12 amps.


Since with my setup running both pumps only increases the pressure by about 1 psi, and the 3 ft of 1/4" tubing only adds about 0.5 psi of back pressure with both pumps running, it might be worth checking for a restriction somewhere in your system.


Steve Boese


From: Rotary motors in aircraft <flyrotary@lancaironline.net> on behalf of steve Izett <flyrotary@lancaironline.net>
Sent: Friday, March 17, 2017 3:44:46 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Fuel Pump and Regulator
 
Hi Guys

I fired up my secondary fuel pump for  the first time today and was met with what I didn’t expect.
Instead of seeing a blip in the fuel pressure, I had a 10psi increase and high current draw from the pump which blew its 10amp fuse.
I’ll up the fuse as its too low me thinks.

I used an old fuel regulator I had on a rail. It was of a Toyota 4AGE engine of about 135hp.
Seems like its not able to bypass enough fuel with both pumps running.

I think I need to install a higher power adjustable regulator.
What experience do you guys have with turning both pumps on simultaneously?

I’m putting a pressure switch in the circuit to turn on the backup pump if the fuel pressure drops below a preset level.

Appreciate your thoughts and experience.

Steve Izett
Genesis 4 port EC3 EM3 RD1C in a Glasair Super II RG still nearly finished!
--
Homepage:  http://www.flyrotary.com/
Archive and UnSub:   http://mail.lancaironline.net:81/lists/flyrotary/List.html


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