X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Tue, 06 Dec 2011 08:43:59 -0500 Message-ID: X-Original-Return-Path: Received: from imr-ma04.mx.aol.com ([64.12.206.42] verified) by logan.com (CommuniGate Pro SMTP 5.4.2) with ESMTP id 5293815 for lml@lancaironline.net; Tue, 06 Dec 2011 08:01:50 -0500 Received-SPF: pass receiver=logan.com; client-ip=64.12.206.42; envelope-from=MikeEasley@aol.com Received: from mtaomg-da05.r1000.mx.aol.com (mtaomg-da05.r1000.mx.aol.com [172.29.51.141]) by imr-ma04.mx.aol.com (8.14.1/8.14.1) with ESMTP id pB6D1CQB002742 for ; Tue, 6 Dec 2011 08:01:12 -0500 Received: from core-mka003c.r1000.mail.aol.com (core-mka003.r1000.mail.aol.com [172.29.102.75]) by mtaomg-da05.r1000.mx.aol.com (OMAG/Core Interface) with ESMTP id 6C48CE000089 for ; Tue, 6 Dec 2011 08:01:12 -0500 (EST) From: MikeEasley@aol.com X-Original-Message-ID: <25dab.73d1045d.3c0f6c18@aol.com> X-Original-Date: Tue, 6 Dec 2011 08:01:12 -0500 (EST) Subject: Re: [LML] 3/8" or 1/2" Fuel Lines? X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="part1_25dab.73d1045d.3c0f6c18_boundary" X-Mailer: AOL 9.6 sub 5003 X-Originating-IP: [75.71.55.189] x-aol-global-disposition: G X-AOL-VSS-INFO: 5400.1158/76688 X-AOL-VSS-CODE: clean X-AOL-SCOLL-SCORE: 1:2:406543136:93952408 X-AOL-SCOLL-URL_COUNT: 1 x-aol-sid: 3039ac1d338d4ede12182af6 --part1_25dab.73d1045d.3c0f6c18_boundary Content-Type: multipart/related; boundary="part1_25dab.73d1045d.3c0f6c18_rel_boundary" --part1_25dab.73d1045d.3c0f6c18_rel_boundary Content-Type: multipart/alternative; boundary="25dab.73d1045d_alt_bound" --25dab.73d1045d_alt_bound Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Content-Language: en Dan, =20 I agree that 1/2" lines are far superior to the 3/8" original design. =20 Something else to think about is removing as many of the 90 degree fittings= =20 from the lines as possible. Tim Ong quoted me some percentage loss of flo= w in=20 every 90 degree fitting and I remember it being significant. Since my ES= =20 is unpressurized, I snaked a continuous hose from the wing to the fuel=20 selector and sealed the fuselage with silicone. Sure, it's quite a bit he= avier=20 than the aluminum tubing, but bending the 1/2" aluminum tubing is tough to= =20 do without an expensive bender. I also used the large radius 90s similar= =20 to this one to eliminate the flow issues... =20 Mike Easley Colorado Springs =20 =20 In a message dated 12/5/2011 12:40:06 P.M. Mountain Standard Time, =20 olsen25@comcast.net writes: =20 LML Gang,=20 I=E2=80=99m building a piston IV-P and am near ready to close out the firs= t wing. =20 The kit I have came with 3/8=E2=80=9D fittings for the fuel lines. Howeve= r, I=20 seem to recall some of you changing that out for =C2=BD=E2=80=9D lines and= hose.=20 What is the wisdom on this? Is the standard 3/8=E2=80=9D sufficient or is= =C2=BD=E2=80=9D=20 necessary? =C2=BD=E2=80=9D is certainly going to have less losses but wil= l also have more=20 weight and will be more work and cost to swap out.=20 Dan Olsen --25dab.73d1045d_alt_bound Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Content-Language: en

Dan,

I agree that 1/2" lines are far superior to the 3/8" original design.&= nbsp;=20 Something else to think about is removing as many of the 90 degree fittings= from=20 the lines as possible. Tim Ong quoted me some percentage loss of flow= in=20 every 90 degree fitting and I remember it being significant. Since my = ES is=20 unpressurized, I snaked a continuous hose from the wing to the fuel selecto= r and=20 sealed the fuselage with silicone. Sure, it's quite a bit heavier tha= n the=20 aluminum tubing, but bending the 1/2" aluminum tubing is tough to do withou= t an=20 expensive bender. I also used the large radius 90s similar to this on= e to=20 eliminate the flow issues...

Mike Easley

Colorado Springs

In a message dated 12/5/2011 12:40:06 P.M. Mountain Standard Time,=20 olsen25@comcast.net writes:

LML Gang,

I=E2=80=99m building a piston IV-P and am near ready= to close out=20 the first wing. The kit I have came with 3/8=E2=80=9D fittings for = the fuel=20 lines. However, I seem to recall some of you changing that out for = =C2=BD=E2=80=9D=20 lines and hose.

What is the wisdom on this? Is the standard 3/= 8=E2=80=9D=20 sufficient or is =C2=BD=E2=80=9D necessary? =C2=BD=E2=80=9D is cert= ainly going to have less losses=20 but will also have more weight and will be more work and cost to swap=20 out.

Dan=20 Olsen

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