X-Virus-Scanned: clean according to Sophos on Logan.com From: "steve Izett" Received: from mail-pf0-f172.google.com ([209.85.192.172] verified) by logan.com (CommuniGate Pro SMTP 6.2c1) with ESMTPS id 9581879 for flyrotary@lancaironline.net; Fri, 17 Mar 2017 22:36:53 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.192.172; envelope-from=steveize@gmail.com Received: by mail-pf0-f172.google.com with SMTP id e129so5936892pfh.0 for ; Fri, 17 Mar 2017 19:36:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:mime-version:subject:date:references:to:in-reply-to:message-id; bh=ggVre/3jTmn7f4xGbG3cAh96WtRJUpi1UPGX4VpRsM0=; b=GdTpN4jZjBA9aWFrZqAIxpqtMako2vjdD7RSop7KOUu07ar8aqTLboS5xdFhhH7ue6 0xY3jQDNYVZluqRAGE2+OAhTUYmGonmoO7X4Q+BiKCMV99pb8GyDrTw+k1llFLoYDgUS ICAKozyHGirXcCk1NwVXjUv5SnlJoxS7frXZC9aMdtz9Uifv1Oy4Y2XcH15b8zcRlMc7 HV3R8TUWMD1ycKCMSmP5rrlga7UOCYTdmyB3v13E7KRV7WQFFU7NoWLW6SlIrQmf9Hyv jQrFVVsnElGdJj8y64FqCyIXlempBCCRruIcm3TFD43apMAi20+xy1xIMht+67ap1cG0 SmNQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:mime-version:subject:date:references:to :in-reply-to:message-id; bh=ggVre/3jTmn7f4xGbG3cAh96WtRJUpi1UPGX4VpRsM0=; b=twzC/PRedc0IeRNinDRurq8B3ikaXXqUmS8McbKO/i4RvO//a2mpyl72F4NRAIgedg ob/mhgx1Mv3FAI0RjCaCD7h0+xt0tvpghPCdzEpZJwrN6Txspqg7Lyb3T7+qbj6Sb5CF AGk9u20rN1/Dp7iLVXwHXTuSKiJi7Ry1/hnth7buJ+eR7NDY6pfbExPvJbo9YB5IZ8qc Kavxe5HwpEvnOCbc3ligWELiOiPKoGXX5r60b32fZP+eE/OWv8C4QAkrAGTvHBTlM74N /8fyeztdyPIp05xu2OnUcYwhLGsRgM+fcZQFsSmjelFhYEcKwVn4NYZbgg36OMYVomhi s4Pw== X-Gm-Message-State: AFeK/H2HHBKwzpManj7hpTCHOpaUibSWp0Xa/U56VH6Y4ZzcSdo4xORWOj7CJ8nwRZFMOQ== X-Received: by 10.84.222.4 with SMTP id w4mr448014pls.159.1489804597323; Fri, 17 Mar 2017 19:36:37 -0700 (PDT) Return-Path: Received: from [172.20.10.2] ([120.18.160.64]) by smtp.gmail.com with ESMTPSA id e13sm19338128pgf.48.2017.03.17.19.36.32 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 17 Mar 2017 19:36:36 -0700 (PDT) Content-Type: multipart/alternative; boundary="Apple-Mail=_5707DB18-4EDD-460A-930B-3B4D9EB72671" Mime-Version: 1.0 (Mac OS X Mail 10.2 \(3259\)) Subject: Re: [FlyRotary] Re: Fuel Pump and Regulator Date: Sat, 18 Mar 2017 10:36:24 +0800 References: To: Rotary motors in aircraft In-Reply-To: Message-Id: X-Mailer: Apple Mail (2.3259) --Apple-Mail=_5707DB18-4EDD-460A-930B-3B4D9EB72671 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 Hi guys Thanks so much for all the replies. I=E2=80=99m away with very little web access for a week. Look forward to = working through your responses latter. Cheers Steve > On 18 Mar 2017, at 9:50 am, Charlie England = wrote: >=20 > OK, found it. I've got a similar model I bought as a transfer pump. >=20 > I'm always looking at what others have done successfully; you never = know what might work better. :-) >=20 > Charlie >=20 > On 3/17/2017 6:34 PM, Steven W. Boese wrote: >> Charlie, >>=20 >> I checked the boxes that the pumps came in and the number is 2P74028. >>=20 >> I missed the "7". Hopefully that is a good number yet. >>=20 >> 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 >> =20 >> Hey Steve, not to hijack the thread, but which pump is that? I can't = find that # on the NAPA web site. >>=20 >> Thanks, >>=20 >> Charlie >>=20 >> On Fri, Mar 17, 2017 at 12:34 PM, Steven W. Boese = > = wrote: >> Steve, >>=20 >> 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. >>=20 >> The fuel pressure in the rail is 38 psi when either pump is running. = The current draw from either pump is 6 amps. >>=20 >> 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. >>=20 >> 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. >>=20 >> Steve Boese >>=20 >> 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 >> =20 >> Hi Guys >>=20 >> I fired up my secondary fuel pump for the first time today and was = met with what I didn=E2=80=99t 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=E2=80=99ll up the fuse as its too low me thinks. >>=20 >> 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. >>=20 >> I think I need to install a higher power adjustable regulator. >> What experience do you guys have with turning both pumps on = simultaneously? >>=20 >> I=E2=80=99m putting a pressure switch in the circuit to turn on the = backup pump if the fuel pressure drops below a preset level. >>=20 >> Appreciate your thoughts and experience. >>=20 >> 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 = >>=20 >=20 >=20 --Apple-Mail=_5707DB18-4EDD-460A-930B-3B4D9EB72671 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8 Hi guys
Thanks so much for all the = replies.
I=E2=80=99m away with very little web = access for a week. Look forward to working through your responses = latter.
Cheers

Steve
On 18 Mar 2017, at 9:50 am, = Charlie England <flyrotary@lancaironline.net> wrote:

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.ne= t> on behalf of = Charlie England <flyrotary@lancaironline.ne= t>
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=E2=80=99t 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=E2=80= =99ll 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=E2=80=99m 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




= --Apple-Mail=_5707DB18-4EDD-460A-930B-3B4D9EB72671--