X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from web83902.mail.sp1.yahoo.com ([69.147.92.99] verified) by logan.com (CommuniGate Pro SMTP 5.3.7) with SMTP id 4340874 for flyrotary@lancaironline.net; Tue, 08 Jun 2010 19:41:13 -0400 Received-SPF: none receiver=logan.com; client-ip=69.147.92.99; envelope-from=keltro@att.net Received: (qmail 84285 invoked by uid 60001); 8 Jun 2010 23:40:37 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=att.net; s=s1024; t=1276040437; bh=832e4RE37iQluZjRXXS8ua5LcrAaD4w+UbKXHX9XxTo=; h=Message-ID:X-YMail-OSG:Received:X-Mailer:References:Date:From:Subject:To:In-Reply-To:MIME-Version:Content-Type; b=IuXjd73r/u5AppUlfpNR63lQiZImCOjBPMaSdsB+26ArjWIneanpote8B5EAi3ByZfDbjddf7UeOPECS/xS/yzwlO2rbAPcFBb82TUkIY9hSH8bH1XTN5VgvHN9HJ3lj7Fntp0DYTbk8D8e0q2zIzKttKLotdld6itPLNJgA+eM= DomainKey-Signature:a=rsa-sha1; q=dns; c=nofws; s=s1024; d=att.net; h=Message-ID:X-YMail-OSG:Received:X-Mailer:References:Date:From:Subject:To:In-Reply-To:MIME-Version:Content-Type; b=qhg1kg8GIgJQriVIMJQQ+xrYXGB4i4aFmze2ovGQQWxJ00tzCqVyakZur4gBYp2oH6W7AdRGEhSPZ0jgCHIMahM2eYsfoQYQ6odx/x78tZXELIzwD+G87nzcTWJr05pZKdUKYFqkvgg3qlxnsQn4Xi+7NrD4QWJBN/G3B5xzFRc=; Message-ID: <495841.83244.qm@web83902.mail.sp1.yahoo.com> X-YMail-OSG: RdY33oYVM1kvG3hNVjHn2tQoCo9Gj5cmzSQPdWeQ9Q5LY1x cAVGR9yzwL.NaExkAnDebGxJdUEcLUl1a50alZw3mCqT84916C76a.otPK6A za0mijpA9AdFV8ZDLj2CHrPhnV22tq1Ca1nFKBj7OxWpiPoU62plubRWbv89 1iIWYj3jOUv29mnuD09hTtABm0CeclIYBT49bB3XXW6vLaq8a0ADpzLKX2YE CrP7R024Iz.Kqpv5kw2n7Ur_tQJxlQcfEkpG68sJdifrXUNxtrKXlbBq4AuM 1Tco586cx3bSJ3OpFt_ZnqGF6mrgWAn43hR59jSDJN1ghd44VhuLqsIZDYH. zk6nf8KU- Received: from [208.114.45.107] by web83902.mail.sp1.yahoo.com via HTTP; Tue, 08 Jun 2010 16:40:37 PDT X-Mailer: YahooMailRC/397.8 YahooMailWebService/0.8.103.269680 References: Date: Tue, 8 Jun 2010 16:40:37 -0700 (PDT) From: Kelly Troyer Subject: Re: [FlyRotary] Re: high/low pressure pumps question To: Rotary motors in aircraft In-Reply-To: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="0-2083116797-1276040437=:83244" --0-2083116797-1276040437=:83244 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Thanks Steve !!..........Perhaps just another "Non-Problem" for our fuel=A0= systems..............Possible but not likely =0Aunless fuel is returned dir= ectly toward the pump inlet as you stated...........=A0Kelly Troyer=0A"Dyke= Delta"_13B ROTARY Engine=0A"RWS"_RD1C/EC2/EM2=0A"Mistral"_Backplate/Oil Ma= nifold =0A=0A=0A=0A=0A________________________________=0AFrom: Steven W. Bo= ese =0ATo: Rotary motors in aircraft =0ASent: Tue, June 8, 2010 2:33:19 PM=0ASubject: [FlyRotary] Re: hi= gh/low pressure pumps question=0A=0A=0AKelly,=0A=A0=0AWhen the statement wa= s made that the air would eventually be eliminated through the vent, I didn= 't mean to imply that it was necessary to have this happen.=A0 It would be = best to avoid drawing the bubbles directly into the fuel supply line which = would only happen if the fuel was returned very close to the supply inlet.= =A0=A0 On one wing=A0tank, I have the return entering center of the root ri= b about a foot away from the supply inlet.=A0 For the other=A0tank, the=A0r= eturn outlet is=A0next to the filler cap=A0which is always above the fuel l= evel and as far away from the supply inlet as is possible.=A0 No difference= in operation of the two tanks has been noticed.=0A=A0=0AA reason given for= returning the fuel below the liquid level=A0has been=A0to reduce foaming.= =A0 There may be other reasons.=A0 I haven't seen much tendency for gasolin= e to foam under conditions present in my system.=0A=A0=0ASteve Boese =0ARV6= A, 1986 13B NA, RD1A, EC2=A0=A0=A0 =0A=A0=0A=0A____________________________= ____=0AFrom: Rotary motors in aircraft [flyrotary@lancaironline.net] On Beh= alf Of Kelly Troyer [keltro@att.net]=0ASent: Tuesday, June 08, 2010 11:26 A= M=0ATo: Rotary motors in aircraft=0ASubject: [FlyRotary] Re: high/low press= ure pumps question=0A=0A=0AGuys,=0A=A0 Very enlightening and=A0truly food f= or thought to those of us still in the construction stage...........I have = just=0Aone more question to ask............Previous info seemed to indicate= that return fuel should be entering the=0Afuel tank at the bottom or at le= ast close to the bottom.............In light of Steve's observations would = it =0Aseem reasonable that air bubbles=A0in the return fuel would be elimin= ated to the tank vent faster if the return=0Aline was at the top or close t= o the top of the tank ??................=A0=A0=0A=A0Kelly Troyer=0A"Dyke De= lta"_13B ROTARY Engine=0A"RWS"_RD1C/EC2/EM2=0A"Mistral"_Backplate/Oil Manif= old =0A --0-2083116797-1276040437=:83244 Content-Type: text/html; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable
=0A
Thanks Steve !!..........Perhaps just an= other "Non-Problem" for our fuel systems..............Possible but not= likely
=0A
unless fuel is returned directly toward the pump inle= t as you stated........... 
Kelly Troyer
"Dyke Delta"_13B ROTA= RY Engine
"RWS"_RD1C/EC2/EM2
"Mistral"_Backplate/Oil Manifold =0A
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=0A=0AFrom: Steven = W. Boese <SBoese@uwyo.edu>
To= : Rotary motors in aircraft <flyrotary@lancaironline.net><= BR>Sent: Tue, June 8, 2010 = 2:33:19 PM
Subject: [Fly= Rotary] Re: high/low pressure pumps question

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Kelly,
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When the statement w= as made that the air would eventually be eliminated through the vent, I did= n't mean to imply that it was necessary to have this happen.  It would= be best to avoid drawing the bubbles directly into the fuel supply line wh= ich would only happen if the fuel was returned very close to the supply inl= et.   On one wing tank, I have the return entering center of= the root rib about a foot away from the supply inlet.  For the other&= nbsp;tank, the return outlet is next to the filler cap which= is always above the fuel level and as far away from the supply inlet as is= possible.  No difference in operation of the two tanks has been notic= ed.
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A reason given for returning the fuel bel= ow the liquid level has been to reduce foaming.  There may b= e other reasons.  I haven't seen much tendency for gasoline to foam un= der conditions present in my system.
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Steve Boese =0A
RV6A, 1986 13B NA, RD1A, EC2   
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=0AFrom: Rotary m= otors in aircraft [flyrotary@lancaironline.net] On Behalf Of Kelly Troyer [= keltro@att.net]
Sent: Tuesday, June 08, 2010 11:26 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: high/low pr= essure pumps question

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"RWS"_RD1C/EC2/EM2
"Mistral"_Backplate/Oil = Manifold =0A

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