X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from cdptpa-omtalb.mail.rr.com ([75.180.132.120] verified) by logan.com (CommuniGate Pro SMTP 5.2.16) with ESMTP id 3876168 for flyrotary@lancaironline.net; Tue, 06 Oct 2009 06:09:39 -0400 Received-SPF: pass receiver=logan.com; client-ip=75.180.132.120; envelope-from=eanderson@carolina.rr.com Received: from computername ([75.191.186.236]) by cdptpa-omta02.mail.rr.com with ESMTP id <20091006100903280.KWGC18886@cdptpa-omta02.mail.rr.com> for ; Tue, 6 Oct 2009 10:09:03 +0000 From: "Ed Anderson" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: Fuel System Date: Tue, 6 Oct 2009 06:18:36 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0060_01CA464C.D7070220" X-Mailer: Microsoft Office Outlook, Build 11.0.5510 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 Thread-Index: AcpGJXodAeS88LT9TPmKiCtBWj1BFwAR/wJg In-Reply-To: Message-Id: <20091006100903280.KWGC18886@cdptpa-omta02.mail.rr.com> This is a multi-part message in MIME format. ------=_NextPart_000_0060_01CA464C.D7070220 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I don=92t really know, Steve. I do have a fiberglass box around the = header tank and pumps/filters with aluminum tape wrapped over it to shield from radiate heat. I also have a blast tube funneling air into the box. =20 =20 Early on during test phase when running auto fuel and doing power on = stalls (high power, low airflow), I notice the fuel pressure fluctuating and = turned on the 6 psi boost pump which eliminated the symptoms. I then installed = the box and blast tube and have had no more such symptoms. =20 In hind sight, putting the header tank someplace other than forward of = the firewall would undoubtedly been a better plan. The pressure differential with just the EFI fuel pumps is sufficient to = pull fuel up a 2 foot height and collapsed a heavy plastic marine fuel tank = when I once forgot to open it=92s vent during the phase I had the engine on a = test stand. So the pressure differential is sufficient. The only thing that would cause a problem is a air leak in the header tank, then I would be forced to use the boost pump to keep fuel flowing to land as the = pressure differential would be lost/weakened. =20 Ed =20 =20 Ed Anderson Rv-6A N494BW Rotary Powered Matthews, NC eanderson@carolina.rr.com http://www.andersonee.com http://www.dmack.net/mazda/index.html http://www.flyrotary.com/ http://members.cox.net/rogersda/rotary/configs.htm#N494BW http://www.rotaryaviation.com/Rotorhead%20Truth.htm =20 _____ =20 From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of stevei@carey.asn.au Sent: Monday, October 05, 2009 9:36 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Fuel System =20 Thanks Ed How hot does fuel get as it gets pumped then through a hot engine cowl? = The lines are insulated under the cowl. How much heat do the pressure pumps introduce? Steve Izett=20 On 6/10/09 9:03 AM, "Ed Anderson" wrote: Hi Steve, =20 Just for comparison -my fuel system is very similar in concept. The principal conceptual difference is I have a header tank for return of my fuel from injectors mounted on the fire wall and is =BD pint in = capacity. The theory is not much fuel to have to get rid of if it gets hot. The fuel = flow into the engine through the injectors continuously pulls cool fuel from = wing tanks. =20 8 gallons of hot fuel (if it ever got hot) might take a while to burn = down to the point the cool incoming fuel does some good. =20 This size goes counter to =93tradition=94 on size of header tanks but = is more in line with the =93returnless=94 systems on most of today=92s = automobiles. =20 FWIW =20 Ed =20 Ed Anderson Rv-6A N494BW Rotary Powered Matthews, NC eanderson@carolina.rr.com http://www.andersonee.com =20 http://www.dmack.net/mazda/index.html =20 http://www.flyrotary.com/ definitefraudstart "members.cox.net"definitefraudend http://members.cox.net/rogersda/rotary/configs.htm#N494BW =20 http://www.rotaryaviation.com/Rotorhead%20Truth.htm =20 _____ =20 From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of stevei@carey.asn.au Sent: Monday, October 05, 2009 7:35 PM To: Rotary motors in aircraft Subject: [FlyRotary] Fuel System Hi All We are trying to make a decision re: fuel system. I=92ve attached a PDF with design and questions etc. Could you please pull it to pieces, make recommendations? Steve Thomas can you comment also from the GSIIRG perspective? Thanks=20 Steve Izett Perth Western Australia Building Glasair SIIRG Renesis 4 Port RD1C EC2 EM3=20 _____ =20 The contents of this email are confidential and intended only for the = named recipients of this e-mail. If you have received this e-mail in error, = you are hereby notified that any use, reproduction, disclosure or = distribution or the information contained in this e-mail is prohibited. Please notify = the sender immediately and then delete/destroy the e-mail and any printed copies. All liability for viruses is excluded to the fullest extent of = the law. __________ Information from ESET NOD32 Antivirus, version of virus = signature database 3267 (20080714) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com -- This message has been checked by ESVA and is believed to be clean. __________ Information from ESET NOD32 Antivirus, version of virus = signature database 3267 (20080714) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com ------=_NextPart_000_0060_01CA464C.D7070220 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Re: [FlyRotary] Re: Fuel System

I don’t really know, = Steve.=A0=A0 I do have a fiberglass box around the header tank and pumps/filters with = aluminum tape wrapped over it to shield from radiate heat.=A0 I also have a blast = tube funneling air into the box.=A0

 

Early on during test phase when = running auto fuel and doing power on stalls (high power, low airflow), I notice = the fuel pressure fluctuating and turned on the 6 psi boost pump which = eliminated the symptoms.=A0 I then installed the box and blast tube and have had no = more such symptoms.

 

In hind sight, putting the header = tank someplace other than forward of the firewall would undoubtedly been a = better plan.

The pressure differential with just = the EFI fuel pumps is sufficient to pull fuel up a 2 foot height and = collapsed a heavy plastic marine fuel tank when I once forgot to open it’s = vent during the phase I had the engine on a test stand.=A0 So the pressure differential is sufficient.=A0 The only thing that would cause a problem = is a air leak in the header tank, then I would be forced to use the boost pump to = keep fuel flowing to land as the pressure differential would be = lost/weakened.

 

Ed

 

 

From: = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of stevei@carey.asn.au
Sent: Monday, October 05, = 2009 9:36 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: = Fuel System

 

Thanks Ed
How hot does fuel get as it gets pumped then through a hot engine cowl? = The lines are insulated under the cowl. How much heat do the pressure pumps introduce?

Steve Izett


On 6/10/09 9:03 AM, "Ed Anderson" <eanderson@carolina.rr.com> = wrote:

Hi Steve,
 
Just for comparison -my fuel system is very similar in concept. =  The principal conceptual difference is I have a header tank for return of my = fuel from injectors mounted on the fire wall and is =BD pint in capacity. =  The theory is not much fuel to have to get rid of if it gets hot. The fuel = flow into the engine through the injectors continuously pulls cool fuel from = wing tanks.
 
 8 gallons of hot fuel (if it ever got hot) might take a while to = burn down to the point the cool incoming fuel does some good.
 
This size  goes counter to “tradition” on size of = header tanks but is more in line with the “returnless” systems on most of today’s automobiles.
 
FWIW
 
Ed
 

Ed Anderson

Rv-6A N494BW Rotary Powered

Matthews, NC

eanderson@carolina.rr.com

http://www.andersonee.com <http://www.andersonee.com> =

http://www.dmack.net/mazda= /index.html <http://www.dmack.net/mazda= /index.html>

http://www.flyrotary.com/

definitefraudstart "members.cox.net"definitefraudend http:/= /members.cox.net/rogersda/rotary/configs.htm#N494BW <http://member= s.cox.net/rogersda/rotary/configs.htm>

http://www.r= otaryaviation.com/Rotorhead%20Truth.htm <http://www.dmack.net/mazda= /index.html>

From: Rotary motors in aircraft [mailto:flyrotary@lancaironlin= e.net] On Behalf Of stevei@carey.asn.au
Sent: Monday, October 05, = 2009 7:35 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Fuel = System

Hi All

We are trying to make a decision re: fuel system.
I’ve attached a PDF with design and questions etc.
Could you please pull it to pieces, make recommendations?
Steve Thomas can you comment also from the GSIIRG perspective?

Thanks

Steve Izett
Perth Western Australia
Building Glasair SIIRG Renesis 4 Port RD1C EC2 EM3 =


The contents of this email are = confidential and intended only for the named recipients of this e-mail. If you have = received this e-mail in error, you are hereby notified that any use, = reproduction, disclosure or distribution or the information contained in this e-mail = is prohibited. Please notify the sender immediately and then delete/destroy = the e-mail and any printed copies. All liability for viruses is excluded to = the fullest extent of the law.


__________ Information from ESET NOD32 Antivirus, version of virus = signature database 3267 (20080714) __________

The message was checked by ESET NOD32 Antivirus.

http://www.eset.com
-- This message has been checked by ESVA and is believed to be = clean.



__________ Information from ESET NOD32 Antivirus, version of virus = signature database 3267 (20080714) __________

The message was checked by ESET NOD32 Antivirus.

http://www.eset.com

------=_NextPart_000_0060_01CA464C.D7070220--