Return-Path: Sender: (Marvin Kaye) To: flyrotary Date: Sun, 23 Mar 2003 23:28:51 -0500 Message-ID: X-Original-Return-Path: Received: from harrier.mail.pas.earthlink.net ([207.217.120.12] verified) by logan.com (CommuniGate Pro SMTP 4.1b1) with ESMTP id 2084166 for flyrotary@lancaironline.net; Sun, 23 Mar 2003 20:41:08 -0500 Received: from user-2injqsf.dialup.mindspring.com ([165.121.235.143] helo=Carol) by harrier.mail.pas.earthlink.net with smtp (Exim 3.33 #1) id 18xGxW-0000HN-00 for flyrotary@lancaironline.net; Sun, 23 Mar 2003 17:41:07 -0800 X-Original-Message-ID: <002001c2f1a6$6f35d7e0$0000a398@Carol> From: "sqpilot@earthlink" X-Original-To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Sump tank X-Original-Date: Sun, 23 Mar 2003 19:41:03 -0600 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_001D_01C2F174.23D7F0D0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2720.3000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 This is a multi-part message in MIME format. ------=_NextPart_000_001D_01C2F174.23D7F0D0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message ----- Original Message -----=20 From: 13brv3@mchsi.com=20 To: Rotary motors in aircraft=20 Sent: Sunday, March 23, 2003 8:24 AM Subject: [FlyRotary] Re: Sump tank I am planning on having the fuel lines go from both tanks to the fuel = selector valve, then to the fuel sump, then to the pump, then to the = fuel rail, injectors, and finally to the fuel pressure regulator. After = that, is it best to have the unused fuel go back into the approximately = 2 gallon fuel sump, or directly back to one of the fuel strake tanks? =20 If you're going to have a 2 gallon fuel sump anyway, I'd return the = fuel to it. Do you actually need the sump for some other reason? If = not, you could eliminate it, and run the fuel back to one or both tanks. = =20 Cheers, Rusty Hi, Rusty and thanks for the response. I have been wondering if I = really even need a sump tank. I know that Velocity Aircraft uses one in = their aircraft, so I just figured they know a lot more about these = canards than I do. It would, however be nice to totally eliminate a sump = tank and just run the return back to say, the left fuel strake. My fuel = pick-up is very close to the bottom of the tank, to the rear, so it = would work fine in climb attitudes when low on fuel. Only when the nose = is pointed down might I have a problem picking up fuel in a low fuel = condition. However, in my 31 years of military and civilian flying, I = pride myself in never allowing myself to get in a low fuel situation. I = am a firm believer that air in the tanks make no contribution to = maintaining straight and level flight. Thanks again. Paul Conner ------=_NextPart_000_001D_01C2F174.23D7F0D0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message
 
----- Original Message -----
From:=20 13brv3@mchsi.com=20
Sent: Sunday, March 23, 2003 = 8:24=20 AM
Subject: [FlyRotary] Re: Sump = tank

I am planning on having the = fuel lines go=20 from both tanks to the fuel selector valve, then to the fuel sump, = then to the=20 pump, then to the fuel rail, injectors, and finally to the fuel = pressure=20 regulator. After that, is it best to have the unused fuel go back into = the=20 approximately 2 gallon fuel sump, or directly back to one of the fuel = strake=20 tanks?  
 
If you're going to have a 2 gallon fuel sump = anyway, I'd=20 return the fuel to it.   Do you actually need the sump for = some=20 other reason?  If not, you could eliminate it, and run the = fuel back=20 to one or both tanks.  
 
Cheers,
Rusty
 
Hi, Rusty and thanks for the response. I = have been=20 wondering if I really even need a sump tank. I know that Velocity = Aircraft=20 uses one in their aircraft, so I just figured they know a lot more = about these=20 canards than I do. It would, however be nice to totally eliminate a = sump tank=20 and just run the return back to say, the left fuel strake.  My = fuel=20 pick-up is very close to the bottom of the tank, to the rear, so it = would work=20 fine in climb attitudes when low on fuel. Only when the nose is = pointed down=20 might I have a problem picking up fuel in a low fuel condition.  = However,=20 in my 31 years of military and civilian flying, I pride myself in = never=20 allowing myself to get in a low fuel situation. I am a firm believer = that air=20 in the tanks make no contribution to maintaining straight = and level=20 flight.  Thanks again.  Paul=20 Conner
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