X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from outbound-mail.dca.untd.com ([64.136.47.15] verified) by logan.com (CommuniGate Pro SMTP 5.2c1) with SMTP id 2556293 for flyrotary@lancaironline.net; Tue, 04 Dec 2007 18:24:11 -0500 Received-SPF: pass receiver=logan.com; client-ip=64.136.47.15; envelope-from=alwick@juno.com Received: from Penny (71-32-251-184.ptld.qwest.net [71.32.251.184]) by smtpout05.dca.untd.com with SMTP id AABDXM2MRAFBTDEJ for (sender ); Tue, 4 Dec 2007 15:23:27 -0800 (PST) Message-ID: From: "Al Wick" To: "Rotary motors in aircraft" References: In-Reply-To: Subject: Re: [FlyRotary] Re: Giving up on single rotor Date: Tue, 4 Dec 2007 15:23:25 -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 Windows Mail 6.0.6000.16480 X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6000.16545 X-ContentStamp: 6:3:1530933403 X-MAIL-INFO:350e0337be9f5e9aab4a8adeabf38fca1ab3936a7f3a6a93 X-UNTD-OriginStamp: L941HVjjYzDhN3itp//mkMM7yrE3kF6DqsSiuEkp2tZJzuVN7U9xeg== X-UNTD-Peer-Info: 10.171.42.35|smtpout05.dca.untd.com|smtpout05.dca.untd.com|alwick@juno.com ----- Original Message ----- From: "Ernest Christley" . A complete model would require measuring the amplitude > and frequency of the hammer blows, but a graph built from a few > experiments like Rusty conducted will allow one to plot where the system > resonates and home in on an appropriate amount of spring. One thing I'm striving for with my new conversion is to have inexpensive measure of torsional characteristics. With software and inexpensive sensors available these days. I think this would solve the #1 concern with conversions. If this works out, I'll be sure to make it available to everyone. Can you imagine having real time graph of your torsional characteristics? You could throttle up 50 rpm to point outside resonance zone. Everyone could compare their results, end up with optimal damper for your plane. I'm pretty stoked about it. No components in hand yet...but I'm hopeful. -Al Wick