X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 50 [XX] (51%) SPAMTRICK: obfuscated phone number (-49%) BODY: correction: likely legitimate obfuscated series of numbers Return-Path: Sender: To: lml@lancaironline.net Date: Sun, 13 May 2007 12:17:35 -0400 Message-ID: X-Original-Return-Path: Received: from outbound-mail.nyc.untd.com ([64.136.20.164] verified) by logan.com (CommuniGate Pro SMTP 5.1.8) with SMTP id 2042057 for lml@lancaironline.net; Sun, 13 May 2007 11:10:02 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.136.20.164; envelope-from=glong2@netzero.net Received: from your4dacd0ea75 (dialup-4.228.72.54.Dial1.Denver1.Level3.net [4.228.72.54]) by smtp03.nyc.untd.com with SMTP id AABDEQLSYASH3KWA for (sender ); Sun, 13 May 2007 08:09:10 -0700 (PDT) From: "glong2" X-Original-To: "'Lancair Mailing List'" Subject: RE: [LML] Re: IO-550 fuel injection X-Original-Date: Sun, 13 May 2007 09:09:03 -0600 X-Original-Message-ID: <004701c79570$a5b2c220$3648e404@your4dacd0ea75> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0048_01C7953E.5B185220" X-Mailer: Microsoft Office Outlook 11 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3028 Thread-Index: AceVCpLkmQc41va/RJaWgAtqvooI4wAZPXWA In-Reply-To: X-ContentStamp: 20:10:1223826258 X-MAIL-INFO:30c55d25c58c9c09ec258c55ec05b571c1cc9119d5c959987d694d4589c8486d599ce8e83c4ce5e12c412cf939f9b8cd85b885edb95d6c55cce555fcd56d8de50100088d41a5a81d2d39dd1d8139380c354ced411d58a59dcdf9110511e1a9cd85e89d95d1c84c29eda9181821d82898a85cdc71c9c98848c1f80868c81c X-UNTD-OriginStamp: QLtLkOW1eqYBwH/v5e7EPyZpvmXaupUufVJ8VsY6LjpF6K1HBPpQpA== X-UNTD-Peer-Info: 10.140.24.123|smtp03.nyc.untd.com|smtp03.nyc.untd.com|glong2@netzero.net This is a multi-part message in MIME format. ------=_NextPart_000_0048_01C7953E.5B185220 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Kevin: The only change would be that the fuel flow during taxi is only about 4 GPH. The other question is the speed must not only push the water thru the tube but must push the water up 1" to get to the trap. It seems I now have to go faster to get water to the trap. Eugene Long Lancair Super ES glong2@netzero.net _____ From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of Kevin Kossi Sent: Saturday, May 12, 2007 8:58 PM To: lml@lancaironline.net Subject: [LML] Re: IO-550 fuel injection OK, lets have some fun with numbers: I would think the volume of air flowing through the ram air vacuum breaker tube would be equal to the volume of fuel being drawn from the tank. To figure out the speed at which the make-up air is flowing through that tube: Provided you are drawing from one tank at a time: If the engine is using 15 Gallon per hour, at 231 Cu/In per gallon, thats 3,465 Cu/In per hour, divided by 1728 to get Cubic Feet Per Minute, which it 2.00520833 Cubic Feet Per Hour Divide by 60 to get Cubic Feet Per Minute, that's .03342014 CFM (I need to convert tot CFM because my air velocity calculator only works in CFM) I put the following into my air velocity calculator: Tube inside diameter: 0.139 Tube Length: .75' CFM: .03342014 I get the following: Velocity: 317.14 FPM - Feet per minute Friction loss: 0.068985 " WC Reynolds #: 383.33 Now if I I use 5,280' in a mile and divide that by 60 to get Feet per minute, I get 88 FPM for one mile an hour, divide our 317.14 FPM velocity by 88, we get 3.6 Miles per hour. I would think under the right conditions that might be enough velocity to suck some water up the tube. If you want to work the number through there is an online air velocity calculator you can use to figure different tube sizes and lengths: http://efficientcomfort.net/jsp/DuctCalculator_Web.jsp Kevin Kossi Legacy 80% New York Continental IO-550-EXP 10:1 Single Lightspeed Single Slick Mag Hartzell HC-H3YF-2UFX/FC7391D-3X. Full feathering, counterweighted, 3 blade ------=_NextPart_000_0048_01C7953E.5B185220 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Kevin:

 

The only change would be that the = fuel flow during taxi is only about 4 GPH.

The other question is the speed = must not only push the water thru the tube but must push the water up 1” to = get to the trap. It seems I now have to go faster to get water to the = trap.

 

Eugene Long

Lancair Super ES

glong2@netzero.net

From: = Lancair Mailing List = [mailto:lml@lancaironline.net] On Behalf Of Kevin Kossi
Sent: Saturday, May 12, = 2007 8:58 PM
To: = lml@lancaironline.net
Subject: [LML] Re: IO-550 = fuel injection

 

OK, lets have some fun with = numbers:

 

I would think the volume of air flowing through the ram air = vacuum breaker tube would be equal to the volume of fuel being drawn from the = tank.

 

To figure out the speed at which the make-up air is flowing = through that tube:

 

Provided you are drawing from one tank at a = time:

If the engine is using 15 Gallon per hour, at 231 Cu/In per = gallon, thats 3,465 Cu/In per hour, divided by 1728 to get Cubic Feet Per = Minute, which it 2.00520833 Cubic Feet Per Hour

Divide by 60 to get Cubic Feet Per Minute, that's .03342014 = CFM

 

(I need to convert tot CFM because my air velocity calculator = only works in CFM)

 

I put the following into my air velocity = calculator:

Tube inside diameter: 0.139

Tube Length: .75'

CFM: .03342014

 

I get the following:

Velocity: 317.14 FPM - Feet per = minute

Friction loss: 0.068985 " WC

Reynolds #: 383.33

 

Now if I I use 5,280' in a mile and divide that by 60 to get = Feet per minute, I get 88 FPM for one mile an hour, divide our 317.14 FPM = velocity by 88, we get 3.6 Miles per hour.

 

I would think under the right conditions that might be enough = velocity to suck some water up the tube.

 

If you want to work the number through there is an online air = velocity calculator you can use to figure different tube sizes and lengths: http://ef= ficientcomfort.net/jsp/DuctCalculator_Web.jsp

 

 

 

 

Kevin = Kossi
Legacy = 80%

New = York

Continental = IO-550-EXP

10:1 Single = Lightspeed Single Slick Mag

Hartzell HC-H3YF-2UFX/FC7391D-3X.

Full = feathering, counterweighted, 3 blade

 

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