X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fed1rmmtao107.cox.net ([68.230.241.39] verified) by logan.com (CommuniGate Pro SMTP 5.3.2) with ESMTP id 4121125 for flyrotary@lancaironline.net; Thu, 11 Feb 2010 11:48:45 -0500 Received-SPF: none receiver=logan.com; client-ip=68.230.241.39; envelope-from=alventures@cox.net Received: from fed1rmimpo01.cox.net ([70.169.32.71]) by fed1rmmtao107.cox.net (InterMail vM.8.00.01.00 201-2244-105-20090324) with ESMTP id <20100211164807.OJXE20722.fed1rmmtao107.cox.net@fed1rmimpo01.cox.net> for ; Thu, 11 Feb 2010 11:48:07 -0500 Received: from BigAl ([72.192.128.205]) by fed1rmimpo01.cox.net with bizsmtp id ggnx1d00V4S1t5C03go8SV; Thu, 11 Feb 2010 11:48:08 -0500 X-VR-Score: -40.00 X-Authority-Analysis: v=1.1 cv=qY0/QvRffkjURHWZjC3q+nTs9PdPIIJxYa32KydkvE8= c=1 sm=1 a=Vegc0WxVmH5BHtpNDyThtA==:17 a=mAvI2Jq5zInTPlf0zFIA:9 a=N6StkOD7o-BppYhtbYtiKgZiKKMA:4 a=vUqMJehs_DLRZ7Wd3DcA:9 a=DcPOvlV_7N2QBOBOOuAA:7 a=7kD4a_jQLo8ThFSt1VYcwPezu24A:4 a=Vegc0WxVmH5BHtpNDyThtA==:117 X-CM-Score: 0.00 From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: Flywheel turbo Date: Thu, 11 Feb 2010 08:48:17 -0800 Message-ID: <9C742BA506624C0DA8DB70C77E7062E8@BigAl> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_000A_01CAAAF6.FA894FA0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6856 Importance: Normal Thread-Index: AcqrLyg3GtJcD8+ES7WjsU0XC2b/UAACY70g In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 This is a multi-part message in MIME format. ------=_NextPart_000_000A_01CAAAF6.FA894FA0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit I'm trying to remember the numbers off the top of my head, so please forgive me if I'm way off, but with the approximately 11" diameter of the flywheel spinning between 6000 and 6500RPM, the equations said I would get 2lbs of pressure increase. 2lbs of pressure translates into somewhere around 20Hp. I tested the static pressure of my electric leaf blower. Labeled to spin at 9000RPM with a 6" impeller. I got over 9" of static pressure. That was enough incentive for me to give it the old college try. Two psi is great. That's over 50" H2O or 4" HG. The 9" from your leaf blower is similar to the furnace blower; about .66" HG I'm sure you're right, those blowers are designed for high flow rate; not much pressure. I'm guessing the same is true for the VW blower. So I hope you're on to something. Innovation is good, and generally high risk; but it's always fun trying. Al ------=_NextPart_000_000A_01CAAAF6.FA894FA0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

  I'm trying to remember

the numbers off the top of my head, so please forgive me if I'm way = off,

but with the approximately 11" diameter of the flywheel spinning = between

6000 and 6500RPM, the equations said I would get 2lbs of = pressure

increase.  2lbs of pressure translates into somewhere around 20Hp.  = I

tested the static pressure of my electric leaf blower. Labeled to = spin

at 9000RPM with a 6" impeller.  I got over 9" of static = pressure. That

was enough incentive for me to give it the old college = try.

 

Two psi is = great.  That’s over 50” H2O or 4” HG. The 9” from your = leaf blower is similar to the furnace blower; about .66” = HG

 <= /font>

I’m = sure you’re right, those blowers are designed for high flow rate; not much pressure. = I’m guessing the same is true = for the VW blower.  So I hope you’re on to something.  Innovation = is good, and generally high risk; but it’s always fun = trying.

 <= /font>

Al

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