X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Wed, 26 Nov 2008 19:01:38 -0500 Message-ID: X-Original-Return-Path: Received: from [64.98.42.44] (HELO smtprelay.b.hostedemail.com) by logan.com (CommuniGate Pro SMTP 5.2.10) with ESMTP id 3317319 for lml@lancaironline.net; Tue, 25 Nov 2008 17:35:59 -0500 Received-SPF: none receiver=logan.com; client-ip=64.98.42.44; envelope-from=rmitch1@hughes.net Received: from filter.hostedemail.com (b-bigip1 [10.5.19.254]) by smtprelay01.b.hostedemail.com (Postfix) with SMTP id CFBFC4136BD3 for ; Tue, 25 Nov 2008 22:35:23 +0000 (UTC) X-SpamScore: 1 X-Spam-Summary: 57,3.5,0,59071c76d351d818,b411e116ac38a5be,rmitch1@hughes.net,lml@lancaironline.net,RULES_HIT:1:2:10:75:82:355:379:509:539:541:542:599:800:901:945:946:960:962:967:972:973:980:983:988:989:1021:1029:1155:1160:1189:1208:1221:1260:1308:1309:1313:1314:1345:1359:1431:1436:1437:1515:1516:1517:1521:1575:1588:1589:1592:1594:1691:1730:1776:1792:2194:2198:2199:2200:2525:2528:2551:2552:2553:2561:2566:2682:2685:2725:2857:2859:2890:2902:2917:2933:2937:2939:2942:2945:2947:2951:2954:3022:3027:3280:3354:3585:3586:3636:3770:3865:3866:3867:3868:3869:3870:3871:3872:3873:3874:3876:3877:3934:3936:3938:3941:3944:3947:3950:3953:3956:3959:4048:4052:4250:4321:4379:4552:5007:6114:6117:6119:6248:7520:7576:7679:7688:7875:7903:8501:8518:8583:8599:8603:8957:9010:9025:9040:9388,0,RBL:none,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:,MSBL:none,DNSBL:none Received: from SonyVaioSZ (dpc6935104091.direcpc.com [69.35.104.91]) (Authenticated sender: rmitch1@hughes.net) by omf10.b.hostedemail.com (Postfix) with ESMTP for ; Tue, 25 Nov 2008 22:35:18 +0000 (UTC) From: "Robert Mitchell" X-Original-To: "'Lancair Mailing List'" References: In-Reply-To: Subject: RE: [LML] Re: 360 Fuel Vent X-Original-Date: Tue, 25 Nov 2008 16:35:09 -0600 X-Original-Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0053_01C94F1B.CE142DB0" X-Mailer: Microsoft Office Outlook 11 X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6001.18049 Thread-Index: AclO/cvSWtEefHcHQNKL4Ky9lVMqVQAT+JKA X-session-marker: 726D6974636831406875676865732E6E6574 This is a multi-part message in MIME format. ------=_NextPart_000_0053_01C94F1B.CE142DB0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit I was thinking about putting 3/8 vent line in my header tank (under construction) but the opposite question is --- would it over pressure the tank? Bob Mitchell Lancair 320 sloooo build kit _____ From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of Sky2high@aol.com Sent: Tuesday, November 25, 2008 7:00 AM To: lml@lancaironline.net Subject: [LML] Re: 360 Fuel Vent Eric, Assuming all kinds of things and using pipe flow calculator for a gas known as air: If your engine is using 15 gal/hr = 2 cu ft/hr = .0335 cfm Suppose the inside diameter of 1/4" tubing is .156", the pressure of the air at the vent is .7 psi (about 200 kts) and the temp is 31F, then the air is traveling in the tube at 3 Kts. "So What?" You might ask. OK then, take a gallon jug, fit a 3/8 inch tube (engine pump fuel line size?) at one end and a quarter inch tube at the other end (vent line). Use a good sealing putty. Fill the jug with water. Let the water drain out the 3/8 tube and time it. If it drains in 3 minutes or less (1 gal/4 min = 15 gals/hr., 1 gal/3 min = 20 gph), the vent is large enough. That's just using gravity - without assistance from the engine pump or the vent pressure and 100LL may be less viscous. Grayhawk PS Let us in on the results. In a message dated 11/24/2008 10:01:34 P.M. Central Standard Time, cassutt@windstream.net writes: I am not using the header tank in my 360 and have installed 1/4" od tubing as the vent for each wing tank. My old SB manual says nothing about fuel vent size even with the header and what published updates there are for the extended bay don't have a size listed either. Is this big enough dia. for pulling fuel straight from the wings or should it be larger? What have others done. Eric Demaray 360 SB -- For archives and unsub http://mail.lancaironline.net:81/lists/lml/List.html _____ One site has it all. Your email accounts, your social networks, and the things you love. Try the new AOL.com today! ------=_NextPart_000_0053_01C94F1B.CE142DB0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

I was thinking about putting 3/8 = vent line in my header tank (under construction) but the opposite question is --- = would it over pressure the tank?

Bob = Mitchell

Lancair 320 sloooo build = kit

 

From: = Lancair Mailing List = [mailto:lml@lancaironline.net] On Behalf Of Sky2high@aol.com
Sent: Tuesday, November = 25, 2008 7:00 AM
To: = lml@lancaironline.net
Subject: [LML] Re: 360 = Fuel Vent

 

Eric,

 

=

Assuming all kinds of things and = using pipe flow calculator for a gas known as = air:

If your engine is using 15 gal/hr = =3D 2 cu ft/hr =3D .0335 cfm

Suppose the inside diameter of = 1/4" tubing is .156", the pressure of the air at the vent is .7 psi = (about 200 kts) and the temp is 31F, then the air is traveling in the tube at 3 = Kts.

 

=

"So What?" You might = ask. 

 

=

OK then, take a gallon jug, fit a = 3/8 inch tube (engine pump fuel line size?) at one end and a = quarter inch tube at the other end (vent line).  Use a good sealing putty.  Fill the jug with water.  Let the water = drain out the 3/8 tube and time it.  If it drains in 3 minutes or = less (1 gal/4 min =3D 15 gals/hr., 1 gal/3 min =3D 20 gph), the vent is large = enough.  That's just using gravity - without assistance from the engine = pump or the vent pressure and 100LL may be less = viscous.

 

=

Grayhawk

 

=

PS Let us in on the = results. 

 

=

In a message dated 11/24/2008 = 10:01:34 P.M. Central Standard Time, cassutt@windstream.net = writes:

I am not using the header tank in = my 360 and have installed 1/4" od tubing as the vent for each wing tank. = My old SB manual says nothing about fuel vent size even with the header and = what published updates there are for the extended bay don't have a size = listed either.  Is this big enough dia. for pulling fuel straight from the = wings or should it be larger? What have others done.

Eric Demaray
360 SB

--
For archives and unsub = http://mail.lancaironline.net:81/lists/lml/List.html



One site has it all. Your email accounts, your social networks, and the things = you love. Try the new AOL.com today!

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