Return-Path: Received: from mail.zutrasoft.com ([66.11.174.123] verified) by logan.com (CommuniGate Pro SMTP 4.1.3) with ESMTP id 2577749 for flyrotary@lancaironline.net; Fri, 12 Sep 2003 22:47:20 -0400 Subject: RE: [FlyRotary] Re: EM2 Survey & Specs Date: Fri, 12 Sep 2003 22:47:09 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01C379A1.539CC6CE" Message-ID: <9F7CCD5AA88D1B46A911658D80F960B8054F6F@zserver2.Zutrasoft1.zutrasoft.com> X-MS-Has-Attach: X-MimeOLE: Produced By Microsoft Exchange V6.0.6375.0 X-MS-TNEF-Correlator: content-class: urn:content-classes:message Thread-Topic: [FlyRotary] Re: EM2 Survey & Specs Thread-Index: AcN5nlqY+P6We3TuTT+Yfs/5CFWZRwAAnU6A From: "Peter Zutrauen" To: "Rotary motors in aircraft" This is a multi-part message in MIME format. ------_=_NextPart_001_01C379A1.539CC6CE Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable Trivia: =20 I know of a fellow who designed his own pring-loaded/oil-damped torsional damper for his Sub, and he measured the twist in the spring using two optical sensors (one before and one after the damper) and then calculated torque and power. For him it was practically free, since he was using the damper anyway. =20 Cheers, Pete Zutrauen Europa Builder and Turbo-single-rotor-with-light-endplates-dreamer =20 -----Original Message----- From: Tracy Crook [mailto:lors01@msn.com]=20 Sent: Friday, September 12, 2003 10:28 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: EM2 Survey & Specs =20 =20 =20 =20 Guess I could calculate torque based on calculated HP & rpm, but would that really add anything? If I could think of a low cost way to measure it directly, that would be a nice thing. Alas, cheap ways to do that are hard to come by. Paul Lamar suggested an annular piston (to sense pressure) behind the sun gear but I don't think that is either simple or cheap. At least not for the guy that actually has to do it. =20 Tracy ------_=_NextPart_001_01C379A1.539CC6CE Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable Message

Trivia:

=

 

I know of a fellow who designed his = own pring-loaded/oil-damped  torsional damper for his Sub, and he measured the twist in the spring using two = optical sensors (one before and one after the damper) and then calculated torque = and power. For him it was practically free, since he was using the damper = anyway.

 

Cheers,

=

Pete = Zutrauen

Europa Builder and = Turbo-single-rotor-with-light-endplates-dreamer<= /p>

 

-----Original = Message-----
From: Tracy Crook [mailto:lors01@msn.com]
Sent: Friday, September 12, 2003 = 10:28 PM
To: Rotary motors in = aircraft
Subject: [FlyRotary] Re: = EM2 Survey & Specs

 

 

 

 

Guess I could = calculate torque based on calculated HP & rpm, but would that really add anything?   If I could think of a low cost way to measure it directly, that would be a nice thing.   Alas, cheap ways to do = that are hard to come by.  Paul Lamar suggested an annular piston (to = sense pressure) behind the sun gear but I don't think that is either simple or cheap.  At least not for the guy that actually has to do = it.

 

Tracy

=00 ------_=_NextPart_001_01C379A1.539CC6CE--