X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from ms-smtp-04.southeast.rr.com ([24.25.9.103] verified) by logan.com (CommuniGate Pro SMTP 5.1c.4) with ESMTP id 1422600 for flyrotary@lancaironline.net; Wed, 27 Sep 2006 08:53:39 -0400 Received-SPF: pass receiver=logan.com; client-ip=24.25.9.103; envelope-from=eanderson@carolina.rr.com Received: from edward2 (cpe-024-074-096-160.carolina.res.rr.com [24.74.96.160]) by ms-smtp-04.southeast.rr.com (8.13.6/8.13.6) with SMTP id k8RCqfd3027416 for ; Wed, 27 Sep 2006 08:52:46 -0400 (EDT) Message-ID: <000701c6e233$d700c840$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Fw: Constant Pressure Differential?? Date: Wed, 27 Sep 2006 08:52:47 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0004_01C6E212.4E681310" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2869 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.2962 X-Virus-Scanned: Symantec AntiVirus Scan Engine This is a multi-part message in MIME format. ------=_NextPart_000_0004_01C6E212.4E681310 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Thanks, Joe Yes, I recall meeting you down at Lancaster. So long as you know I am = only experienced with 13Bs {:>), but do have a bit of experience on the = 13B. I'll check on Ebay for a new fuel pressure regulator. Perhaps when I get back in the air, I could fly down to Lancaster and = you could pick me up at the airport. Ed ----- Original Message -----=20 From: Joe Ewen=20 To: Rotary motors in aircraft=20 Sent: Wednesday, September 27, 2006 8:19 AM Subject: [FlyRotary] Re: Fw: Constant Pressure Differential?? Ed, Thanks, this is useful info. If you decide to change your fuel = regulator, you will have to retune your EC2 (assuming you are using a = EC2.) I have written a program (would still consider it Alpha) that you = can see the fuel map tables and write digital values to each of the = array elements with a PC. I would be happy to trade use of the program = for your looking over my 20B installation so far. In case you don't = recall, I am located near KLKR. Also if you go with an Aeromotive = regulator, it does not come with the AN fittings, they are the o-ring = type. I am using Aeromotive #13109, best price was on Ebay. Best = pricing I found for the fittings was from AmStreetRod.com. Hope this helps, Joe ----- Original Message -----=20 From: Ed Anderson=20 To: Rotary motors in aircraft=20 Sent: Tuesday, September 26, 2006 7:55 PM Subject: [FlyRotary] Fw: Constant Pressure Differential?? I thought some of you might be interested in Aeromotive's response = to my question about their fuel pressure regulators - some of which = reference "Vacuum/Boost" and some descriptions only refer to "Boost". Ed Ed Anderson Rv-6A N494BW Rotary Powered Matthews, NC eanderson@carolina.rr.com http://members.cox.net/rogersda/rotary/configs.htm#N494BW ----- Original Message -----=20 From: Aeromotive Tech=20 To: 'Ed Anderson'=20 Sent: Tuesday, September 26, 2006 5:59 PM Subject: RE: Constant Pressure Differential?? Ed,=20 =20 In all cases where an Aeromotive regulator is able to be referenced = to intake manifold pressure, it will affect fuel pressure on a 1:1 ratio = with PSI, in both positive and negative pressure situations, equally. =20 Vacuum is normally measured in "HG (inches mercury) and you would = have to convert to PSI by dividing the "HG by 2. =20 =20 This will ensure that the delta across the injector of flow orifice = will always be maintained. =20 Hope this answers your questions, good luck and thanks for choosing = Aeromotive! =20 Brett Clow Technical Support Aeromotive, Inc. 7805 Barton St. Lenexa, KS 66214 913-647-7300 Ext. 109 -------------------------------------------------------------------------= --- From: Ed Anderson [mailto:eanderson@carolina.rr.com]=20 Sent: Friday, September 22, 2006 1:55 PM To: tech@aeromotiveinc.com Subject: Constant Pressure Differential?? =20 I notice that some of the descriptions for your fuel pressure = regulators that are manifold referenced refers to "Vacuum/Boost" and = others refer only to "Boost".=20 =20 Does this indicated that those which described as "vacuum/boost" = will cause the fuel pressure to vary in order to maintain a constant = pressure differential between the fuel and the manifold pressure whether = below 30 inch Hg or above 30" Hg? Does the ones which are reference = to only "Boost" indicate that the regulator holds the line fuel pressure = constant until the manifold pressure goes above 30" Hg and then = increases it to compensate for more fuel needed in boost? =20 I am using an EFI that requires a constant pressure differential = between the line fuel pressure and the manifold pressure for optimum = performance. The engine produces approx 200HP. Therefore, I need a = fuel pressure regulator which DOES vary line fuel pressure in order to = maintain a constant pressure differential across the injector at = manifold pressures below 30" Hg. So do all your manifold referenced = fuel pressure regulators do this OR only those which are referenced to = "vacuum" or "vacuum/Boost"? =20 Thanks =20 Ed =20 Ed Anderson Rv-6A N494BW Rotary Powered Matthews, NC eanderson@carolina.rr.com http://members.cox.net/rogersda/rotary/configs.htm#N494BW ------=_NextPart_000_0004_01C6E212.4E681310 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Thanks, Joe
 
Yes, I recall meeting you down at = Lancaster.  So long=20 as you know I am only experienced with 13Bs {:>), but do have a bit = of=20 experience on the 13B.  I'll check on Ebay for a new fuel pressure=20 regulator.
 
Perhaps when I get back in the air, I could fly = down to=20 Lancaster and you could pick me up at the airport.
 
Ed
----- Original Message -----
From:=20 Joe = Ewen=20
Sent: Wednesday, September 27, = 2006 8:19=20 AM
Subject: [FlyRotary] Re: Fw: = Constant=20 Pressure Differential??

Ed,
 
Thanks, this is useful info.  If = you decide=20 to change your fuel regulator, you will have to retune your EC2 = (assuming you=20 are using a EC2.)  I have written a program (would still consider = it=20 Alpha) that you can see the fuel map tables and write digital values = to each=20 of the array elements with a PC.  I would be happy to trade use = of the=20 program for your looking over my 20B installation so far.  In = case you=20 don't recall, I am located near KLKR.  Also if you go with an = Aeromotive=20 regulator, it does not come with the AN fittings, they are the o-ring=20 type.  I am using Aeromotive #13109, best price was on=20 Ebay.  Best pricing I found for the fittings was from=20 AmStreetRod.com.
 
Hope this helps,
Joe
----- Original Message -----
From:=20 Ed Anderson
To: Rotary motors in = aircraft=20
Sent: Tuesday, September 26, = 2006 7:55=20 PM
Subject: [FlyRotary] Fw: = Constant=20 Pressure Differential??

I thought some of you might be interested in = Aeromotive's response to my question about their fuel pressure = regulators -=20 some of which reference "Vacuum/Boost" and some descriptions only = refer to=20 "Boost".
 
Ed
 
Ed Anderson
Rv-6A N494BW Rotary=20 Powered
Matthews, NC
eanderson@carolina.rr.comhttp:/= /members.cox.net/rogersda/rotary/configs.htm#N494BW
----- Original Message -----=20
From: = Aeromotive=20 Tech
Sent: Tuesday, September 26, 2006 5:59 PM
Subject: RE: Constant Pressure = Differential??

Ed,=20

 

In all = cases where=20 an Aeromotive regulator is able to be referenced to intake manifold=20 pressure, it will affect fuel pressure on a 1:1 ratio with PSI, in = both=20 positive and negative pressure situations,=20 equally.

 

Vacuum is = normally=20 measured in =93HG (inches mercury) and you would have to convert to = PSI by=20 dividing the =93HG by 2. 

 

This will = ensure=20 that the delta across the injector of flow orifice will always be=20 maintained.

 

Hope this = answers=20 your questions, good luck and thanks for choosing=20 Aeromotive!

 

Brett=20 Clow

Technical = Support

Aeromotive,=20 Inc.

7805 = Barton=20 St.

Lenexa, = KS  66214

913-647-7300 =20 Ext. 109

From: Ed=20 Anderson [mailto:eanderson@carolina.rr.com]
Sent: Friday, September 22, = 2006 1:55=20 PM
To:=20 tech@aeromotiveinc.com
Subject: Constant Pressure=20 Differential??

 

I notice that some of = the=20 descriptions for your fuel pressure regulators that are manifold=20 referenced  refers to "Vacuum/Boost" and others refer only = to=20 "Boost". 

 

 Does this = indicated that=20 those which described as "vacuum/boost"  will cause the fuel = pressure=20 to vary in order to maintain a constant pressure differential = between=20 the fuel and the manifold pressure whether below 30 inch Hg or above = 30"=20 Hg?    Does the ones which are reference to only = "Boost"=20 indicate that the regulator holds the line fuel pressure constant = until the=20 manifold pressure goes above 30" Hg and then increases it to = compensate for=20 more fuel needed in boost?

 

I am using an EFI that = requires=20 a constant pressure differential = between=20 the line fuel pressure and the manifold pressure for optimum=20 performance.  The engine produces approx 200HP.  = Therefore, I need=20 a fuel pressure regulator which DOES vary line fuel pressure in = order to=20 maintain a constant pressure differential = across=20 the injector at manifold pressures below 30" Hg.  So do all = your=20 manifold referenced fuel pressure regulators do this OR only those = which are=20 referenced to "vacuum" or = "vacuum/Boost"?

 

Thanks

 

Ed

 

Ed Anderson
Rv-6A = N494BW=20 Rotary Powered
Matthews, NC
eanderson@carolina.rr.comhttp:/= /members.cox.net/rogersda/rotary/configs.htm#N494BW

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