X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from nm1.access.bullet.mail.mud.yahoo.com ([66.94.237.202] verified) by logan.com (CommuniGate Pro SMTP 5.4c3j) with SMTP id 4994695 for flyrotary@lancaironline.net; Wed, 25 May 2011 22:18:41 -0400 Received-SPF: none receiver=logan.com; client-ip=66.94.237.202; envelope-from=ceengland@bellsouth.net Received: from [66.94.237.194] by nm1.access.bullet.mail.mud.yahoo.com with NNFMP; 26 May 2011 02:18:07 -0000 Received: from [66.94.237.107] by tm5.access.bullet.mail.mud.yahoo.com with NNFMP; 26 May 2011 02:18:07 -0000 Received: from [127.0.0.1] by omp1012.access.mail.mud.yahoo.com with NNFMP; 26 May 2011 02:18:07 -0000 X-Yahoo-Newman-Id: 376570.91891.bm@omp1012.access.mail.mud.yahoo.com Received: (qmail 64525 invoked from network); 26 May 2011 02:18:06 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bellsouth.net; s=s1024; t=1306376286; bh=j7+5F0eq/mji7jrRCvmmuqDCIclDDNC+W7kK0Q9FFGA=; h=Received:X-Yahoo-SMTP:X-YMail-OSG:X-Yahoo-Newman-Property:Message-ID:Date:From:User-Agent:MIME-Version:To:Subject:References:In-Reply-To:Content-Type; b=CUgH4bBElRads05QNmckqsCEcOb63Ec5NSGa4mQ7DdsfwL5QREWvLjZY4UWmWwDR0i1JMSU74aMHyAseOciz8pkC4gx5vLtVLb9/7AgXsg1s2M08h13XfVdpaI+rtWOnqIABFLAD40i5Hq5oCuUVDI/WzKclnNfAhR0rPfJ8cBo= Received: from [192.168.10.8] (ceengland@98.95.186.208 with plain) by smtp105.sbc.mail.bf1.yahoo.com with SMTP; 25 May 2011 19:18:06 -0700 PDT X-Yahoo-SMTP: uXJ_6LOswBCr8InijhYErvjWlJuRkoKPGNeiuu7PA.5wcGoy X-YMail-OSG: YDvtvMYVM1mBSCcxDU4WKsDpv0XiVEcxASvljjrE7FjE9wD UnGYATDUzg_Bf6IbZAbI_yeTldxEqwa5cvFkCEhYXG3qipApyqvwIfnYIkWH s_W6NWRI5IQ5xOb17ZcRv3f3B2ncKnJIx3KOuJGZJzuajKQH5AEkYRW.122M nwW3DA3a9PqW.VcSPp5zoSFfieQs2rBa8nVZm2.0Sx0aX4YL8xLx3WaiaDvr zb9uTUHtu.XKHINIwOcyV5.Ul2K6VT3aKDhWyJIeoirGDyfsGhG0SyE0510g G_n2VbLMF.KhF5OZrdhAmguQ0YzDGaMvehPIIWwF2KmVbWw4gJRUeCWJ8FaQ ixmBZZrycDyCkLwOlBYD2pZJf285Iiw7dX9wcsRlX.YdPaagP0FPq4Kcs0uy zQ5kG6raj_8gxEk9FVEHwzgn9zBdyxvymqB4.5BrhZ946ZrsPSeWQPnK8Y6G QpSGSuGnAIOLD0k0ryvoVW2FI7hLEqfUHHWen X-Yahoo-Newman-Property: ymail-3 Message-ID: <4DDDB85F.5090102@bellsouth.net> Date: Wed, 25 May 2011 21:18:07 -0500 From: Charlie England User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.17) Gecko/20110414 Thunderbird/3.1.10 MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: Blower design References: In-Reply-To: Content-Type: multipart/alternative; boundary="------------060708060800010301050802" This is a multi-part message in MIME format. --------------060708060800010301050802 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit On 5/25/2011 8:00 PM, Ernest Christley wrote: > On 05/25/2011 10:33 AM, John wrote: >> In a recent Hot Rod Mag. I seen an article where their project >> Corvette go-cart had two Sears leaf blowers complete with engines, >> supercharging the engine, those units must really turn up the rpm's. >> JohnD > During the first big war, the German experimented with using a 200Hp > engine to act as a supercharger for the 4 engines on their biggest bomber. > http://www.tunersgroup.com/TunerWire_Live/Turbonique.html One of the recent Reno homebuilt class racers has used a Rotax 2stroke to run their blower. Not to rain too much on the parade of ideas, but I'd be fearful that anything except a properly engineered blower assembly will consume more power than it will add to the engine's output. Much better minds than mine say that one of the reasons small turbines are so inefficient is excessive leakage past the perimeter of the blades, due to the ratio of the gap area to the overall area of the turbine. Charlie --------------060708060800010301050802 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit On 5/25/2011 8:00 PM, Ernest Christley wrote:
On 05/25/2011 10:33 AM, John wrote:
In a recent Hot Rod Mag. I seen an article where their project Corvette go-cart had two Sears leaf blowers complete with engines, supercharging the engine, those units must really turn up the rpm's.  JohnD
During the first big war, the German experimented with using a 200Hp engine to act as a supercharger for the 4 engines on their biggest bomber.

http://www.tunersgroup.com/TunerWire_Live/Turbonique.html
One of the recent Reno homebuilt class racers has used a Rotax 2stroke to run their blower.

Not to rain too much on the parade of ideas, but I'd be fearful that anything except a properly engineered blower assembly will consume more power than it will add to the engine's output. Much better minds than mine say that one of the reasons small turbines are so inefficient is excessive leakage past the perimeter of the blades, due to the ratio of the gap area to the overall area of the turbine.

Charlie
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