X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from QMTA01.westchester.pa.mail.comcast.net ([76.96.62.16] verified) by logan.com (CommuniGate Pro SMTP 5.2c1) with ESMTP id 2607307 for flyrotary@lancaironline.net; Thu, 20 Dec 2007 16:13:52 -0500 Received-SPF: none receiver=logan.com; client-ip=76.96.62.16; envelope-from=gregw@onestopdesign.biz Received: from OMTA05.westchester.pa.mail.comcast.net ([76.96.62.43]) by QMTA01.westchester.pa.mail.comcast.net with comcast id T8Di1Y00A0vyq2s0504d00; Thu, 20 Dec 2007 21:13:13 +0000 Received: from gregoryii ([24.6.40.29]) by OMTA05.westchester.pa.mail.comcast.net with comcast id T9DC1Y00S0dkeQQ3R00000; Thu, 20 Dec 2007 21:13:13 +0000 X-Authority-Analysis: v=1.0 c=1 a=hb8VRz4XseMA:10 a=zNUN9j0ZAAAA:8 a=7g1VtSJxAAAA:8 a=Ia-xEzejAAAA:8 a=Jran_nKU0JX949pXBSkA:9 a=Wj6KttzMDlk7JOSgFEMA:7 a=5V7iJZzik0O1sh8ZDsyotcYjGt4A:4 a=EzXvWhQp4_cA:10 a=WN8zLioqDSwA:10 Message-ID: <08fa01c8434e$89b63930$8801a8c0@yosemite.onestopdesign.biz> From: "Greg Ward" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: superchargers electric Date: Thu, 20 Dec 2007 13:23:16 -0800 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=response Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3138 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3198 Yet, their website advertises up to 8 PSI, and the motor doesn't look that big. Also the "Thrasher Motorsport" site that they talk about makes no mention of them. Curiouser, and curiouser. Greg ----- Original Message ----- From: "Ernest Christley" To: "Rotary motors in aircraft" Sent: Thursday, December 20, 2007 11:53 AM Subject: [FlyRotary] Re: superchargers electric > Ed Anderson wrote: >> I guess IF I really thought it was credible, I would have my $99.00 check >> in the mail and I don't. >> >> > They're being sold on eBay, right? Could very well be that a well funded > company lost their funding when the product just wouldn't sale, and > eBayers are the beneficiaries of the fallout. > > I think one sanity check you can fall back on is the simple physics models > we were using earlier. You know the CFM the engine is using, and how much > extra air will be needed to give an advertised head pressure. Check to > see if that is possible with 1.5Hp. We computed earlier that 600CFM of > standard pressure and temperature air will require just over 3Hp to > accelerate from 0 to 220fps. (220fps equates to about 0.5psi of head > pressure according to http://www.iflyez.com/manometer.shtml ) > > For a 1.5Hp electric motor, the most you could ever hope to get is .5psi > of boost for a 300CFM engine. > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: > http://mail.lancaironline.net:81/lists/flyrotary/List.html >