X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fed1rmmtao104.cox.net ([68.230.241.42] verified) by logan.com (CommuniGate Pro SMTP 5.2.15) with ESMTP id 3760019 for flyrotary@lancaironline.net; Wed, 15 Jul 2009 10:26:55 -0400 Received-SPF: none receiver=logan.com; client-ip=68.230.241.42; envelope-from=alventures@cox.net Received: from fed1rmimpo02.cox.net ([70.169.32.72]) by fed1rmmtao104.cox.net (InterMail vM.7.08.02.01 201-2186-121-102-20070209) with ESMTP id <20090715142618.HVAQ17135.fed1rmmtao104.cox.net@fed1rmimpo02.cox.net> for ; Wed, 15 Jul 2009 10:26:18 -0400 Received: from BigAl ([72.192.133.78]) by fed1rmimpo02.cox.net with bizsmtp id GESJ1c0071hf1Cg04ESJqT; Wed, 15 Jul 2009 10:26:18 -0400 X-VR-Score: 0.00 X-Authority-Analysis: v=1.0 c=1 a=6ONkZwolDEQA:10 a=Ia-xEzejAAAA:8 a=glWNUzpAbFaI0nC7zyEA:9 a=TwiYqkb76RVNGPDt2EwA:7 a=2rWzwHUJO0BMj20zmogE4m5YQHUA:4 a=EzXvWhQp4_cA:10 a=yMhMjlubAAAA:8 a=U-hAYe8p3xYBk7kHiYkA:9 a=oxOa14Rdd6X7XLbjd8wA:7 a=oPe963vf1xpzXVejY3zO7dqSyLMA:4 X-CM-Score: 0.00 From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Sediment bowls in EFI fuel systems Date: Wed, 15 Jul 2009 07:27:17 -0800 Message-ID: <3D7341A411BB417AA0133E8809671907@BigAl> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_001A_01CA051D.AE820EF0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6838 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 Thread-Index: AcoFSJF6yXaYHFH/QIGaZn6AKy0wYgAF78gg In-Reply-To: Importance: Normal This is a multi-part message in MIME format. ------=_NextPart_000_001A_01CA051D.AE820EF0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable Jeff; =20 Does the sediment bowl include a fine screen filter? If so I'd take it = out or replace with a coarser screen. Potential pressure drop (flow = impediment) upstream of the hp pump is a vapor lock concern. =20 Al G =20 -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Jeff Whaley Sent: Wednesday, July 15, 2009 4:34 AM To: Rotary motors in aircraft Subject: [FlyRotary] Sediment bowls in EFI fuel systems =20 Any comments about sediment bowls in the EFI system - are they an asset = or a liability? Though my fuel is gravity-fed to the sediment bowl and the EFI pumps are after, is the flow-rate through the bowl exceeding its = design/application intention?=20 I have heard that a sediment bowl is not mandatory as long as there is a drain at the lowest point in fuel system. I ask because mine was leaking the other day at the seal between bowl = and rubber gasket - tightened up the thumb screw and it seems to be okay - = yes it was previously lock-wired, though maybe the thumb screw was not as = tight as it is now. =20 Jeff (finally expecting to fly again tonight with cooling mods complete) ------=_NextPart_000_001A_01CA051D.AE820EF0 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

Jeff;

 

Does the sediment bowl include a = fine screen filter?  If so I’d take it out or replace with a = coarser screen. Potential pressure drop (flow impediment) upstream of the hp = pump is a vapor lock concern.

 

Al G

 

-----Original = Message-----
From: Rotary motors in = aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Jeff Whaley
Sent: Wednesday, July 15, = 2009 4:34 AM
To: Rotary motors in = aircraft
Subject: [FlyRotary] = Sediment bowls in EFI fuel systems

 

Any comments about sediment bowls in the EFI = system – are they an asset or a liability?

Though my fuel is gravity-fed to the sediment = bowl and the EFI pumps are after, is the flow-rate through the bowl exceeding its design/application intention?

I have heard that a sediment bowl is not = mandatory as long as there is a drain at the lowest point in fuel = system.

I ask because mine was leaking the other day = at the seal between bowl and rubber gasket – tightened up the thumb screw = and it seems to be okay – yes it was previously lock-wired, though maybe = the thumb screw was not as tight as it is now.

 

Jeff (finally expecting to fly again tonight = with cooling mods complete)

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