X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 30 [X] Return-Path: Received: from imo-m24.mx.aol.com ([64.12.137.5] verified) by logan.com (CommuniGate Pro SMTP 5.1.3) with ESMTP id 1695900 for flyrotary@lancaironline.net; Wed, 20 Dec 2006 17:17:43 -0500 Received-SPF: pass receiver=logan.com; client-ip=64.12.137.5; envelope-from=WRJJRS@aol.com Received: from WRJJRS@aol.com by imo-m24.mx.aol.com (mail_out_v38_r7.6.) id q.c21.cd5d15a (60470) for ; Wed, 20 Dec 2006 17:16:50 -0500 (EST) Received: from FWM-D11 (fwm-d11.webmail.aol.com [205.188.160.203]) by ciaaol-m02.mx.aol.com (v114.2) with ESMTP id MAILCIAAOLM023-ec364589b64f2bb; Wed, 20 Dec 2006 17:16:47 -0500 References: To: flyrotary@lancaironline.net Subject: Re: [FlyRotary] Radical Prop Was C/S Date: Wed, 20 Dec 2006 17:16:48 -0500 In-Reply-To: X-MB-Message-Source: WebUI MIME-Version: 1.0 From: wrjjrs@aol.com X-MB-Message-Type: User Content-Type: multipart/alternative; boundary="--------MB_8C8F29BACFD1868_E24_10A3C_FWM-D11.sysops.aol.com" X-Mailer: AOL WebMail 22250 Received: from 65.161.241.3 by FWM-D11.sysops.aol.com (205.188.160.203) with HTTP (WebMailUI); Wed, 20 Dec 2006 17:16:48 -0500 Message-Id: <8C8F29BACFF7AC5-E24-8BF1@FWM-D11.sysops.aol.com> X-AOL-IP: 205.188.160.203 X-Spam-Flag: NO ----------MB_8C8F29BACFD1868_E24_10A3C_FWM-D11.sysops.aol.com Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii" Ed, I have followed Paul Lipps prop design efforts. Very interesting indeed. There must be some improvement in efficiency since the birds flying them are usually near or at the front of the pack. Looking for improvement is admarible Ed, The problem is often you must just build it yourself. Paul's efforts, at first at least, were the design program only. He would give you the numbers for the speed and HP you had and then you had to fabricate the prop yourself! I don't know if he is supplying a finished product yet or not. Bill Jepson -----Original Message----- From: eanderson@carolina.rr.com To: flyrotary@lancaironline.net Sent: Wed, 20 Dec 2006 10:29 AM Subject: [FlyRotary] Radical Prop Was C/S Look under heading BiPlanes in the below URL and there a pilot reports a 20 mph increase using the radical Lipps propeller over a more conventional prop - again, my point is better ways may be more a matter of looking at fresh ideas about props and controllers rather than accepting what has been. http://www.avweb.com/eletter/archives/avflash/291-full.html I believe this prop is optimized for high speed flight, and while I am certain I don't fully understand the total reason why, part of the reason it is faster appears to be that it can develop thrust right down the hub if the airspeed (prop advance?) is high enough. Also the developer takes issue with the standard "broad" tips on props. etc. However, it may not provide the same amount of increase over my current prop due to the slower airspeeds I flight - but hey, even 10 MPH increase would be interesting. FWIW Ed Anderson Rv-6A N494BW Rotary Powered Matthews, NC eanderson@carolina.rr.com http://members.cox.net/rogersda/rotary/configs.htm#N494BW http://www.dmack.net/mazda/index.html ________________________________________________________________________ Check out the new AOL. Most comprehensive set of free safety and security tools, free access to millions of high-quality videos from across the web, free AOL Mail and more. ----------MB_8C8F29BACFD1868_E24_10A3C_FWM-D11.sysops.aol.com Content-Transfer-Encoding: 7bit Content-Type: text/html; charset="us-ascii"
Ed,
I have followed Paul Lipps prop design efforts. Very interesting indeed. There must be some improvement in efficiency since the birds flying them are usually near or at the front of the pack. Looking for improvement is admarible Ed, The problem is often you must just build it yourself. Paul's efforts, at first at least, were the design program only. He would give you the numbers for the speed and HP you had and then you had to fabricate the prop yourself! I don't know if he is supplying a finished product yet or not.
Bill Jepson
 
 
-----Original Message-----
From: eanderson@carolina.rr.com
To: flyrotary@lancaironline.net
Sent: Wed, 20 Dec 2006 10:29 AM
Subject: [FlyRotary] Radical Prop Was C/S

 
Look under heading BiPlanes in the below URL  and there a pilot reports a 20 mph increase using the radical Lipps propeller over a more conventional prop - again, my point is better ways may be more a matter of looking at fresh ideas about props and controllers rather than accepting what has been.
 
 
I believe this prop is optimized for high speed flight, and while I am certain I don't fully understand the total reason why, part of the reason it is faster appears to be that it can develop thrust right down the hub if the airspeed (prop advance?) is high enough.  Also the developer takes issue with the standard "broad" tips on props. etc. 
 
 
However, it may not provide the same amount of increase over my current prop due to the slower airspeeds I flight - but hey, even 10 MPH increase would be interesting.
 
FWIW
 
 
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