Return-Path: Received: from corpprd-pxy2.canfor.ca ([198.162.160.3] verified) by logan.com (CommuniGate Pro SMTP 4.3c1) with ESMTP id 728688 for flyrotary@lancaironline.net; Mon, 14 Feb 2005 14:38:37 -0500 Received-SPF: none receiver=logan.com; client-ip=198.162.160.3; envelope-from=Steve.Bartrim@canfor.com Received: from canformail1.canfor.ca (canformail1.canfor.ca [199.60.193.29]) by corpprd-pxy2.canfor.ca (Build 103 8.9.3p2/NT-8.9.3) with ESMTP id LAA06442 for ; Mon, 14 Feb 2005 11:37:49 -0800 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01C512CC.AA6048B8" Subject: RE: [FlyRotary] Re: More on Header Tanks, Venting & Pressure Reg Position X-MimeOLE: Produced By Microsoft Exchange V6.5.7226.0 Date: Mon, 14 Feb 2005 11:37:49 -0800 Message-ID: <091A2D42FAF91A41B84750D269FC97E72B310D@canformail1.canfor.ca> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: [FlyRotary] Re: More on Header Tanks, Venting & Pressure Reg Position Thread-Index: AcUSybO2w1BNTNMbRHKsrM65txYsQgAAbYbA From: "Bartrim, Todd" To: "Rotary motors in aircraft" This is a multi-part message in MIME format. ------_=_NextPart_001_01C512CC.AA6048B8 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Hi Ernest; This is much closer to a true returnless EFI system as used in late model cars, than what I was able to come up with... and mine works, so this has an equal or greater chance of success. As you are feeding from a single tank (rather than 6), this configuration is easier to adapt for you. You will need to run your fuel pressure higher to ensure the fuel in the rails doesn't flash to vapour. This can be compensated for with your tuning of the EC2, however it becomes a little more difficult to achieve a smooth idle. You'll want to avoid the high flow injectors when running at a higher pressure. Todd Bartrim I've attached a improved diagram of what I think would be a good fuel system for a Dyke Delta. Two high pressure pumps under the tank feed into seperate filters (which may need to be switched to before the pumps...there seems to be some counterviews that I haven't sorted through). The line then Ts into a regulator with a single line going firewall forward. A gascolator/drain will have a seperated pickup in the tank that is lower than the feul supply pickup. The beauty in this system is its simplicity. ------_=_NextPart_001_01C512CC.AA6048B8 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Hi=20 Ernest;
        This is much = closer to a=20 true returnless EFI system as used in late model cars, than what I was = able to=20 come up with... and mine works, so this has an equal or greater chance = of=20 success. As you are feeding from a single tank (rather than 6), this=20 configuration is easier to adapt for you. You will need to run your fuel = pressure higher to ensure the fuel in the rails doesn't flash to vapour. = This=20 can be compensated for with your tuning of the EC2, however it becomes a = little=20 more difficult to achieve a smooth idle. You'll want to avoid the high = flow=20 injectors when running at a higher pressure.

Todd Bartrim

I've attached a improved diagram of what I think would = be a good=20 fuel system for a Dyke Delta.  Two high pressure pumps under the = tank feed=20 into seperate filters (which may need to be switched to before the = pumps...there=20 seems to be some counterviews that I haven't sorted through).  The = line=20 then Ts into a regulator with a single line going firewall = forward.  A=20 gascolator/drain will have a seperated pickup in the tank that is lower = than the=20 feul supply pickup.  The beauty in this system is its=20 simplicity.

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