X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from nm10.bullet.mail.sp2.yahoo.com ([98.139.91.80] verified) by logan.com (CommuniGate Pro SMTP 5.4c2o) with SMTP id 4881580 for flyrotary@lancaironline.net; Thu, 24 Feb 2011 16:06:13 -0500 Received-SPF: none receiver=logan.com; client-ip=98.139.91.80; envelope-from=bobperk90658@bellsouth.net Received: from [98.139.91.63] by nm10.bullet.mail.sp2.yahoo.com with NNFMP; 24 Feb 2011 21:05:37 -0000 Received: from [98.139.91.28] by tm3.bullet.mail.sp2.yahoo.com with NNFMP; 24 Feb 2011 21:05:37 -0000 Received: from [127.0.0.1] by omp1028.mail.sp2.yahoo.com with NNFMP; 24 Feb 2011 21:05:37 -0000 X-Yahoo-Newman-Property: ymail-3 X-Yahoo-Newman-Id: 501127.56982.bm@omp1028.mail.sp2.yahoo.com Received: (qmail 18668 invoked by uid 60001); 24 Feb 2011 21:05:37 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bellsouth.net; s=s1024; t=1298581536; bh=e9Wr2eL8nKhw6m2KdCG3e4TZozIBx3sMwMyLFcZd6Ic=; h=Message-ID:X-YMail-OSG:Received:X-Mailer:References:Date:From:Subject:To:In-Reply-To:MIME-Version:Content-Type; b=VreSpT6dPNZJO1L92mYC2/Rghc1gU1bAG6CWbPXq4YwRM+Sd0ZfHxRLDeRb7+f/zHgxZQ2ENb4GmUyBbisB6fludI2apye3MAtYnaDj9XVfuIKutRh8AFTD8SvpmBq5FpgQ4h/4CRnDekp93AIN0oAephaQOksEw0nVY4WX3G4Q= DomainKey-Signature:a=rsa-sha1; q=dns; c=nofws; s=s1024; d=bellsouth.net; h=Message-ID:X-YMail-OSG:Received:X-Mailer:References:Date:From:Subject:To:In-Reply-To:MIME-Version:Content-Type; b=MIxsFLKpQnKT+gdhBGumg/CG05+2qdbwHM/1SpNqzG4CVZWDipcghBzpg31xwMH6U2TlFgNC/k6OncWiy589wXVqwnuiTM8O2imjaDxPIWiu+m5J7i2mOzt++aYC4mUiIiTSTOH9WAWrucV59ivHeBspQmEf48HJ3V0gwVptung=; Message-ID: <940713.18531.qm@web180305.mail.gq1.yahoo.com> X-YMail-OSG: UwH_x5oVM1kel5_vVF3Cwwlcg_wupQ3TmPTpsmeoW2BBhFY 8znbcJIoT0_iZsLwdOQoPio.a4EANGEEFc.iaauMmdMkI3b5tIuWw5rn9XDd pTvGHsO.qG2mrpBHF9FXQbOo8CEAcVBLQWZ6cX6mSNAjM_Dxf7CjmFvPd24A .fH7eAEKmo7fk.4Jx8nr4CxDZVKsO.qgcfBaEh6LN7QmryddOV9XOIF2VFB9 _5vcgHIgK3INhOSVKPbtn2927WllR4X9Edf9_NwLgCXcAR8H7de6783d5fP0 r9lvAvYgh0vIb7ib21WFkstIZosQEBsLf1uhzQ9A3xQ6vcQCqgw97a4gOpya eNM.UphsigW.7F3TbJ3H0jvRQ.RvieoA- Received: from [74.179.14.176] by web180305.mail.gq1.yahoo.com via HTTP; Thu, 24 Feb 2011 13:05:36 PST X-Mailer: YahooMailRC/555 YahooMailWebService/0.8.109.292656 References: Date: Thu, 24 Feb 2011 13:05:36 -0800 (PST) From: Bob Perkinson Subject: Re: [FlyRotary] TDC To: Rotary motors in aircraft In-Reply-To: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="0-1693578954-1298581536=:18531" --0-1693578954-1298581536=:18531 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Steve,=0AYou gave away at least One. I used it to find TDC on my 13B that = Sunday =0Aafternoon when I got home from Paducah, worked great, and confirm= ed that the =0Atiming mark on the case was in line with the mark on the E s= haft. =0A=0A Bob Perkinson=0ARV-9 13B=0A=0A=0A=0A=0A______________________= __________=0AFrom: Steven W. Boese =0ATo: Rotary motors in= aircraft =0ASent: Thu, February 24, 2011 10:2= 8:05 AM=0ASubject: [FlyRotary] TDC=0A=0A=0AChris,=0A =0AThe attached photo = shows a device that makes it easy to determine the location =0Aof the minim= um combustion chamber volume (TDC) within a degree independently of =0Aany = existing front pulley or flywheel markings. Connect it to a spark plug =0A= location and just rotate the eccentric shaft to the point where the soap bu= bble =0Ain the clear tube is the highest. It might be worth a try. I made= up a number =0Aof these to give away at the Paducha fly in last summer. T= he lack of interest =0Awas surprising since I couldn=E2=80=99t even give th= em away. =0A=0A =0ASteve --0-1693578954-1298581536=:18531 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable

Steve,

You gave away at least= One. I used it to find TDC on my 13B that Sunday afternoon when I go= t home from Paducah, worked great, and confirmed that the timing mark on th= e case was in line with the mark on the E shaft.

Bob Perkinson
RV-9 13B

From: Steven W. Boese <SBoese@uwyo.edu>
= To: Rotary motors in aircraft= <flyrotary@lancaironline.net>
Sent: Thu, February 24, 2011 10:28:05 AM
Subject: [FlyRotary] TDC

Chris,

The at= tached photo shows a device that makes it easy to determine the location of= the minimum combustion chamber volume (TDC) within a degree independently = of any existing front pulley or flywheel markings. Connect it to a sp= ark plug location and just rotate the eccentric shaft to the point where th= e soap bubble in the clear tube is the highest. It might be worth a t= ry. I made up a number of these to give away at the Paducha fly in la= st summer. The lack of interest was surprising since I couldn=E2=80= =99t even give them away.

Steve

=

=0A=0A=0A

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