Return-Path: Received: from imf22aec.mail.bellsouth.net ([205.152.59.70] verified) by logan.com (CommuniGate Pro SMTP 4.3c1) with ESMTP id 725570 for flyrotary@lancaironline.net; Fri, 11 Feb 2005 17:37:03 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.70; envelope-from=sqpilot@bellsouth.net Received: from [209.214.45.200] by imf22aec.mail.bellsouth.net (InterMail vM.5.01.06.11 201-253-122-130-111-20040605) with ESMTP id <20050211223612.DXLQ730.imf22aec.mail.bellsouth.net@[209.214.45.200]> for ; Fri, 11 Feb 2005 17:36:12 -0500 Received: from 127.0.0.1 (AVG SMTP 7.0.300 [265.8.7]); Fri, 11 Feb 2005 16:35:45 -0600 Message-ID: <008801c5108a$063c8d10$012cd6d1@paul52u7f5qyav> From: "Paul" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: More wild ideas was Re: [FlyRotary] Re: To Paul SOme diagnosis thoughts Date: Fri, 11 Feb 2005 16:35:44 -0600 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="=======AVGMAIL-420D334216EF=======" --=======AVGMAIL-420D334216EF======= Content-Type: multipart/alternative; boundary="----=_NextPart_000_0085_01C51057.BB87DE50" ------=_NextPart_000_0085_01C51057.BB87DE50 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable ----- Original Message -----=20 From: John Slade=20 To: Rotary motors in aircraft=20 Sent: Friday, February 11, 2005 2:51 PM Subject: [FlyRotary] Re: More wild ideas was Re: [FlyRotary] Re: To = Paul SOme diagnosis thoughts=20 One final thought.....my aluminum sump tank in not vented. Seems we = discussed this at length when I was building this thing, and since the = overflow is pumped into the sump tank, the fuel might just be pumped = right out of the vent. =20 Paul, this sounds a LOT like a problem I've experienced.=20 My returns go to the main tanks switched by a solenoid. I used to be = able to create a crossfeed situation where I was drawing from one tank, = but returning to the other. The tank receiving the return became full, = and I lost power down to 2500 rpm or so. I was in the pattern when this = occurred, so I just brought it home. I had fuel coming out of the vent. = I've seen this twice when trying to feed the return to a full tank. = Maybe the fuel pressure drops under these circumstances. In my case I've rewired the switches to avoid crossfeed and added a = crossfeed warning light.=20 Regards, John Ed....are you out there? If I recall correctly, you also have your = overflow return going into your sump tank. When your sump tank is full, = have you experienced any problems, and is your sump tank vented? Thanks = in advance for your reply. Paul Conner -------------------------------------------------------------------------= ----- No virus found in this incoming message. Checked by AVG Anti-Virus. Version: 7.0.300 / Virus Database: 265.8.7 - Release Date: 2/10/2005 ------=_NextPart_000_0085_01C51057.BB87DE50 Content-Type: text/html; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable
 
----- Original Message -----
From:=20 John=20 Slade
Sent: Friday, February 11, 2005 = 2:51=20 PM
Subject: [FlyRotary] Re: More = wild ideas=20 was Re: [FlyRotary] Re: To Paul SOme diagnosis thoughts

One final thought.....my aluminum = sump tank in=20 not vented. Seems we discussed this at length when I was building this = thing,=20 and since the overflow is pumped into the sump tank, the fuel might = just be=20 pumped right out of the vent.  
Paul, this sounds a LOT like a = problem I've=20 experienced.
My=20 returns go to the main tanks switched by a solenoid. I used to be = able to=20 create a crossfeed situation where I was drawing from one = tank, but=20 returning to the other. The tank receiving the return became full, and = I lost=20 power down to 2500 rpm or so. I was in the pattern when this occurred, = so I=20 just brought it home. I had fuel coming out of the vent. I've seen = this twice=20 when trying to feed the return to a full tank. Maybe the fuel pressure = drops=20 under these circumstances.
 
In=20 my case I've rewired the switches to avoid crossfeed and added a=20 crossfeed warning light.
Regards,
John
 
Ed....are you out there?  If I recall = correctly,=20 you also have your overflow return going into your sump tank.  = When your=20 sump tank is full, have you experienced any problems, and is your sump = tank=20 vented?  Thanks in advance for your reply.  Paul=20 Conner
 

No virus found in this incoming message.
Checked by AVG=20 Anti-Virus.
Version: 7.0.300 / Virus Database: 265.8.7 - Release = Date:=20 2/10/2005
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