X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imr-mb02.mx.aol.com ([64.12.207.163] verified) by logan.com (CommuniGate Pro SMTP 5.3.9) with ESMTP id 4468679 for flyrotary@lancaironline.net; Thu, 16 Sep 2010 00:38:46 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.12.207.163; envelope-from=Bktrub@aol.com Received: from imo-da03.mx.aol.com (imo-da03.mx.aol.com [205.188.169.201]) by imr-mb02.mx.aol.com (8.14.1/8.14.1) with ESMTP id o8G4c02l022211 for ; Thu, 16 Sep 2010 00:38:00 -0400 Received: from Bktrub@aol.com by imo-da03.mx.aol.com (mail_out_v42.9.) id q.eca.3d887d6 (44952) for ; Thu, 16 Sep 2010 00:37:58 -0400 (EDT) Received: from magic-d24.mail.aol.com (magic-d24.mail.aol.com [172.19.146.158]) by cia-mc02.mx.aol.com (v129.4) with ESMTP id MAILCIAMC023-af984c919f2521a; Thu, 16 Sep 2010 00:37:58 -0400 From: Bktrub@aol.com Message-ID: <1650ff.2ac1dff9.39c2f925@aol.com> Date: Thu, 16 Sep 2010 00:37:57 EDT Subject: Re: [FlyRotary] Re: 2nd flight today To: flyrotary@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="part1_1650ff.2ac1dff9.39c2f925_boundary" X-Mailer: 9.0 Security Edition for Windows sub 5377 X-AOL-IP: 108.3.31.54 X-Spam-Flag:NO X-AOL-SENDER: Bktrub@aol.com --part1_1650ff.2ac1dff9.39c2f925_boundary Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Tracy,( and Don Walker, since you have a Renesis also. before I do any more adjustment of the mixture, I figured that I should ascertain that I do have the correct ignition timing. The 13BREW has a trigger wheel on the main pulley, and crank angle sensor mounted on the front engine cover. The trigger wheel has one notch, and there is an index mark cast into the front cover just above the pulley. I put the timing light to the engine at 1400 RPM( it was the lowest that I can get a reliably smooth idle) and found that the mark was showing ignition for the leading plug at about 10 degrees before the notch lined up with the wheel. I have a factory 1993 RX-7 manual, but it does not tell me where these marks line up in relation to TDC. Do you know? I imagine the Renesis has the same ignition setup. I'm in the process of turning my airplane from an airborne gas chamber into a safe airplane by replacing the SS flex tube with either Inconel, or 321 stainless .After I get the exhaust switched over, tuning and testing will resume. But first I want to be sure about the ignition timing. I also got about 1 1/2 hours of RV time today, in both the RV-8 and RV-7. Can't wait until I get some time in the -4. Brian Trubee --part1_1650ff.2ac1dff9.39c2f925_boundary Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

Tracy,( and Don Walker, since you have a Renesis also.

before I do any more adjustment of the mixture, I figured that I shou= ld=20 ascertain that I do have the correct ignition timing. The 13BREW has a tri= gger=20 wheel on the main pulley, and crank angle sensor mounted on the front= =20 engine cover. The trigger wheel has one notch, and there is an index mark= cast=20 into the front cover just above the pulley. I put the timing light to the= engine=20 at 1400 RPM( it was the lowest that I can get a reliably smooth idle) and= found=20 that the mark was showing ignition for the leading plug at about 10 degree= s=20 before the notch lined up with the wheel. I have a factory 1993 RX-7 manua= l, but=20 it does not tell me where these marks line up in relation to TDC. Do you= know?=20

I imagine the Renesis has the same ignition setup.

I'm in the process of turning my airplane from an airborne gas chambe= r into=20 a safe airplane by replacing the SS flex tube with either Inconel, or 321= =20 stainless .After I get the exhaust switched over, tuning and testing will= =20 resume. But first I want to be sure about the ignition timing. I also got= about=20 1 1/2 hours of RV time today, in both the RV-8 and RV-7. Can't wait until= I get=20 some time in the -4.

Brian Trubee

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