X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from neutron.sasknet.sk.ca ([142.165.20.180] verified) by logan.com (CommuniGate Pro SMTP 5.4c3j) with ESMTPS id 4989940 for flyrotary@lancaironline.net; Fri, 20 May 2011 17:21:13 -0400 Received-SPF: none receiver=logan.com; client-ip=142.165.20.180; envelope-from=hjjohnson@sasktel.net Received: from pps.filterd (neutron [127.0.0.1]) by neutron.sasknet.sk.ca (8.14.3/8.14.3) with SMTP id p4KLIFae003646 for ; Fri, 20 May 2011 15:20:36 -0600 Received: from bgmpomr1.sasknet.sk.ca (bgmpOMR1.sasknet.sk.ca [142.165.72.22]) by neutron.sasknet.sk.ca with ESMTP id wdyx8gc2j-1 for ; Fri, 20 May 2011 15:20:36 -0600 Received: from sasktel.net ([192.168.234.97]) by bgmpomr1.sasknet.sk.ca (SaskTel eMessaging Service) with ESMTP id <0LLI00HMQJAC5W00@bgmpomr1.sasknet.sk.ca> for flyrotary@lancaironline.net; Fri, 20 May 2011 15:20:36 -0600 (CST) Received: from [192.168.234.25] (Forwarded-For: [98.125.90.150]) by cgmail1.sasknet.sk.ca (mshttpd); Fri, 20 May 2011 15:20:36 -0600 Date: Fri, 20 May 2011 15:20:36 -0600 From: H & J Johnson Subject: Re: [FlyRotary] Blower experiment: FAIL To: Rotary motors in aircraft Message-id: MIME-version: 1.0 X-Mailer: Sun Java(tm) System Messenger Express 6.1 HotFix 0.20 (built Feb 27 2006) Content-type: multipart/mixed; boundary="Boundary_(ID_rIOSnbj1aTCsnK05Js1RtA)" Content-language: en X-Accept-Language: en Priority: normal X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:5.4.6813,1.0.148,0.0.0000 definitions=2011-05-20_05:2011-05-20,2011-05-20,1970-01-01 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=default score=0 spamscore=0 ipscore=0 suspectscore=3 phishscore=0 bulkscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx engine=5.0.0-1012030000 definitions=main-1105200243 This is a multi-part message in MIME format. --Boundary_(ID_rIOSnbj1aTCsnK05Js1RtA) Content-type: text/html; charset=us-ascii Content-transfer-encoding: 7BIT Content-disposition: inline Ernest, did you get a high speed dynamic balance on your blower? I've built blowers of a similar form and had good results, but only after balancing to rated RPM.

Jarrett Johnson
www.innovention-tech.com

--Boundary_(ID_rIOSnbj1aTCsnK05Js1RtA) Content-type: multipart/alternative; boundary="Boundary_(ID_devVV8zZydDQPvQe/p/JzA)" --Boundary_(ID_devVV8zZydDQPvQe/p/JzA) Content-type: text/plain; charset=ISO-8859-1; format=flowed Content-transfer-encoding: 7BIT Some of you may recall my blower experiment. Using the shaft between the flywheel and PSRU to drive a centrifugal fan to charge the intake. My implementation died in the crib. before.jpg shows what it looked like a week ago. after.jpg is what was left of it after the few minutes I was able to get the engine to run. Well, that wasn't all that was left over. intake.jpg shows how the blades got thrown toward the intake and smashed up against the air filter. Oh, well. Until I can design and build or have built an impeller that can handle 8000RPM, I'm going to table this experiment. I still think it is a good idea. So did these guys: http://www.flightglobal.com/pdfarchive/view/1942/1942%20-%200142.html Furthermore, the calculator at http://www.forestryforum.com/members/donp/Blowercalc.htm indicates that with the 10.4" diameter, 3.35" deep area available for me to put a blower, I should be able to generate 17" water column pressure. --Boundary_(ID_devVV8zZydDQPvQe/p/JzA) Content-type: text/html; charset=ISO-8859-1 Content-transfer-encoding: 7BIT Some of you may recall my blower experiment. Using the shaft between the flywheel and PSRU to drive a centrifugal fan to charge the intake.

My implementation died in the crib. before.jpg shows what it looked like a week ago. after.jpg is what was left of it after the few minutes I was able to get the engine to run. Well, that wasn't all that was left over. intake.jpg shows how the blades got thrown toward the intake and smashed up against the air filter.

Oh, well. Until I can design and build or have built an impeller that can handle 8000RPM, I'm going to table this experiment. I still think it is a good idea. So did these guys:

http://www.flightglobal.com/pdfarchive/view/1942/1942%20-%200142.html

Furthermore, the calculator at http://www.forestryforum.com/members/donp/Blowercalc.htm indicates that with the 10.4" diameter, 3.35" deep area available for me to put a blower, I should be able to generate 17" water column pressure.

--Boundary_(ID_devVV8zZydDQPvQe/p/JzA)-- --Boundary_(ID_rIOSnbj1aTCsnK05Js1RtA) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 7BIT Content-disposition: inline -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html --Boundary_(ID_rIOSnbj1aTCsnK05Js1RtA)--