Return-Path: Received: from [216.52.245.18] (HELO ispwestemail2.mdeinc.com) by logan.com (CommuniGate Pro SMTP 4.3c1) with ESMTP id 743570 for flyrotary@lancaironline.net; Thu, 17 Feb 2005 17:42:37 -0500 Received-SPF: none receiver=logan.com; client-ip=216.52.245.18; envelope-from=wschertz@ispwest.com Received: from 7n7z201 (unverified [67.136.145.215]) by ispwestemail2.mdeinc.com (Vircom SMTPRS 4.0.340.3) with SMTP id for ; Thu, 17 Feb 2005 14:41:49 -0800 Message-ID: <04f401c51541$db3af9a0$07928843@7n7z201> From: "William" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Returnless Fuel System - Fuel Cooler Date: Thu, 17 Feb 2005 16:41:11 -0600 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit 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 Bob, remember that Todd is in a cool climate. What is the highest OAT you have flown in Todd? Bill Schertz KIS Cruiser # 4045 ----- Original Message ----- From: "Bob White" To: "Rotary motors in aircraft" Sent: Thursday, February 17, 2005 9:29 AM Subject: [FlyRotary] Re: Returnless Fuel System - Fuel Cooler > > Hi Tracy, > > My alternative is to try to jam all the return fuel thru a 1/4 inch > line. It seems like that will cause problems also. It's fairly > substantial surgery to get a 3/8 inch return line in. > > I certainly agree that without the cooler it's a disaster waiting to > happen. I'm relying somewhat on Todd's positive experiences > with his system, and further testing on my plane. > > Bob White > > On Thu, 17 Feb 2005 09:52:56 -0500 > "Tracy Crook" wrote: > >> Even with the cooler, This scares me. I know of at least 2 cases where >> it has caused power failures, one resulted in fatality. True, they >> didn't have the cooler but it is a bandaid covering up a problem. >> >> Tracy >> >> Hi Jim, >> >> Todd's system is a "quasi" returnless system. The fuel is returned to >> the input of the fuel pump instead of the tank. Without the cooler, >> much of the same fuel would circulate thru the fuel rail again and agin >> picking up heat. To see Todd's diagram and description go to: >> >> http://www.rotarywiki.com/ and search for >> "returnless". >> >> Bob White >> >> >> On Wed, 16 Feb 2005 23:25:06 -0600 >> Jim Sower > >> wrote: >> >> > But I thought the purpose of the cooler was to cool the *return* >> fuel. >> > If it's a one-way system, how does the fuel get hot enough to need >> cooling? >> > What am I missing here? ... Jim S. >> > >> > Bob White wrote: >> > >> > >Todd, >> > > >> > >I'm going to build a returnless system based on your design. I >> found >> > >this fuel cooler at Jeg's for about $40. Jeg's P/N 771-1009. The >> > >finned area is 4.5 X 5 X 7/8 (inch), which I think is a little >> bigger >> > >than the one you made. >> > > >> > >> >http://www.jegs.com/cgi-bin/ncommerce3/ProductDisplay?prrfnbr=3532&prmenbr=361 >> > > >> > >I'm sure it's nicer looking than anything I could build myself. >> I'll >> > >post pictures of my alternator bracket one of these days to prove >> it. >> > > >> > >Bob White >> > > >> > > >> > > >> > >> > >> Homepage: http://www.flyrotary.com/ >> > >> Archive: >> http://lancaironline.net/lists/flyrotary/List.html >> > >> > >> >> >> -- >> http://www.bob-white.com >> N93BD - Rotary Powered BD-4 (real soon) >> >> >> Homepage: http://www.flyrotary.com/ >> >> Archive: >> http://lancaironline.net/lists/flyrotary/List.html >> > > > -- > http://www.bob-white.com > N93BD - Rotary Powered BD-4 (real soon) > >>> Homepage: http://www.flyrotary.com/ >>> Archive: http://lancaironline.net/lists/flyrotary/List.html