X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imr-db01.mx.aol.com ([205.188.91.95] verified) by logan.com (CommuniGate Pro SMTP 5.3.9) with ESMTP id 4469626 for flyrotary@lancaironline.net; Thu, 16 Sep 2010 14:57:06 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.188.91.95; envelope-from=Bktrub@aol.com Received: from imo-ma01.mx.aol.com (imo-ma01.mx.aol.com [64.12.78.136]) by imr-db01.mx.aol.com (8.14.1/8.14.1) with ESMTP id o8GIuLax012380 for ; Thu, 16 Sep 2010 14:56:21 -0400 Received: from Bktrub@aol.com by imo-ma01.mx.aol.com (mail_out_v42.9.) id q.bfc.7d786b8e (34959) for ; Thu, 16 Sep 2010 14:56:16 -0400 (EDT) Received: from smtprly-dc01.mx.aol.com (smtprly-dc01.mx.aol.com [205.188.170.1]) by cia-da06.mx.aol.com (v129.4) with ESMTP id MAILCIADA068-d1c04c92684a37e; Thu, 16 Sep 2010 14:56:16 -0400 Received: from webmail-d091 (webmail-d091.sim.aol.com [205.188.255.2]) by smtprly-dc01.mx.aol.com (v129.4) with ESMTP id MAILSMTPRLYDC011-d1c04c92684a37e; Thu, 16 Sep 2010 14:56:10 -0400 References: To: flyrotary@lancaironline.net Subject: Re: [FlyRotary] Re: Timing Date: Thu, 16 Sep 2010 14:56:10 -0400 X-AOL-IP: 208.46.237.130 In-Reply-To: X-MB-Message-Source: WebUI MIME-Version: 1.0 From: bktrub@aol.com X-MB-Message-Type: User Content-Type: multipart/alternative; boundary="--------MB_8CD23E7F63AC6B4_1404_A3F_webmail-d091.sysops.aol.com" X-Mailer: AOL Webmail 32679-STANDARD Received: from 208.46.237.130 by webmail-d091.sysops.aol.com (205.188.255.2) with HTTP (WebMailUI); Thu, 16 Sep 2010 14:56:10 -0400 Message-Id: <8CD23E7F3F857A1-1404-574@webmail-d091.sysops.aol.com> X-Spam-Flag:NO X-AOL-SENDER: Bktrub@aol.com ----------MB_8CD23E7F63AC6B4_1404_A3F_webmail-d091.sysops.aol.com Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="us-ascii" I'll try that, it will do the trick . This engine is a 13BREW, so it has= a crank angle sensor mounted on the front cover, and a trigger wheel. It'= s the original pulley. But, your method is surefire and I need to pull the= plugs anyway just to read them. Thanks for the tip.=20 I just wonder if the CAS can read and I can get a spark if rotating by han= d. I''ll try it out tomorrow, when the plugs are pulled so I don't get a= kickback.=20 Brian Trubee -----Original Message----- From: Mark Steitle To: Rotary motors in aircraft Sent: Thu, Sep 16, 2010 11:46 am Subject: [FlyRotary] Re: Timing Brian, I was curious, have you verified that the timing mark you believe to be TD= C is actually TDC? I recall it being mentioned before that you can't rely= on the timing marks on the pulleys as sometimes pulleys get swapped from= one engine to another and may not match up correctly. I feel it is worth= checking. Lynn H. has described how to locate TDC (check archives). Bas= ically, you remove the leading plug on #1 rotor, rotate crank until you se= e an apex seal in the center of the hole, put a mark on the flywheel (use= a temporary pointer for a reference point). Then reverse rotation until= you see another apex seal in the center of the hole, put a 2nd mark on th= e flywheel. Now split the difference between the two marks and that shoul= d be TDC. Check that it matches the mark on your pulley. =20 Mark S.=20 On Thu, Sep 16, 2010 at 1:33 PM, wrote: I've got a 74 x88 catto. The Co was a result of the band clamp not sealing= completely, but I was going to change to 321 or Inconel any way, so I fig= ured I'd do it now and be done with it. I wanted to be absolutely sure my= timing was correct before going any further down the tunig road. I checke= d the timing yesterday, and I was getting the leading plug firing about 10= degrees in advance of those two timing marks lining up at 1400 rpm. I adj= usted it so that it is now dead on at 1400 rpm. I set it there as a refere= nce, it's easy to change in Mode 8. There's no reason to go any further in= the tuning department unless I can be assured that the timing is correct.= I've got a factory manual, but have not found any reference to the timng= marks or exactly what they signify.=20 =20 Brian Trubee -----Original Message----- From: Don Walker To: Rotary motors in aircraft Sent: Thu, Sep 16, 2010 11:14 am Subject: [FlyRotary] Timing Brian,=20 Timing is one of the few things I didn't have to mess with. Once all the= other problems were taken care of and the CAS was spaced correctly, the= engine started and ran fine. What a day! I am using the EC-2 default sett= ing for the renesis as programed by Tracy and have not even paid much atte= ntion to it or even checked it. Good luck on your next flight. I assume yo= u are using the EM-2 and EC-2. What prop are you using? You make a good po= int on checking for CO. I just have one of those stick on cards and should= borrow a real meter as I am running SS flex tube also.=20 Don=20 RV-8 renesis 76/88 cato=20 =20 --=20 Homepage: http://www.flyrotary.com/=20 Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.h= tml=20 ----------MB_8CD23E7F63AC6B4_1404_A3F_webmail-d091.sysops.aol.com Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset="us-ascii"
I'll try that, it will do= the trick . This engine is a 13BREW, so it has a crank angle sensor mount= ed on the front cover, and a trigger wheel. It's the original pulley. But,= your method is surefire and I need to pull the plugs anyway just to read= them. Thanks for the tip.
 
I just wonder if the CAS can read and I can get a spark if rotating= by hand. I''ll try it out tomorrow, when the plugs are pulled so I don't= get a kickback.
 
Brian Trubee



-----Original Message-----
From: Mark Steitle <msteitle@gmail.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Thu, Sep 16, 2010 11:46 am
Subject: [FlyRotary] Re: Timing

Brian,

I was curious, have you verified that the timing mark you believe to= be TDC is actually TDC?  I recall it being mentioned before that you= can't rely on the timing marks on the pulleys as sometimes pulleys get sw= apped from one engine to another and may not match up correctly.  I= feel it is worth checking.  Lynn H. has described how to locate TDC= (check archives).  Basically, you remove the leading plug on #1 roto= r, rotate crank until you see an apex seal in the center of the hole, put= a mark on the flywheel (use a temporary pointer for a reference point).=  Then reverse rotation until you see another apex seal in the center= of the hole, put a 2nd mark on the flywheel.  Now split the differen= ce between the two marks and that should be TDC.  Check that it match= es the mark on your pulley.  

Mark S. 

On Thu, Sep 16, 2010 at 1:33 PM, = <bktrub@aol.com> wrote:=
I've got a 74 x88 catto. The Co was a result of the band clamp not se= aling completely, but I was going to change to 321 or Inconel any way, so= I figured I'd do it now and be done with it. I wanted to be absolutely su= re my timing was correct before going any further down the tunig road. I= checked the timing yesterday, and I was getting the leading plug firing= about 10 degrees in advance of those two timing marks lining up at 1400= rpm. I adjusted it so that it is now dead on at 1400 rpm. I set it there= as a reference, it's easy to change in Mode 8. There's no reason to go an= y further in the tuning department unless I can be assured that the timing= is correct. I've got a factory manual, but have not found any reference= to the timng marks or exactly what they signify.
 
Brian Trubee



-----Original Message-----
From: Don Walker <drwalker@gbis.co= m>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Thu, Sep 16, 2010 11:14 am
Subject: [FlyRotary] Timing

Brian, 
  Timing is one of the few things I didn't have to mess with. Once al= l the other problems were taken care of and the CAS was spaced correctly,= the engine started and ran fine. What a day! I am using the EC-2 default= setting for the renesis as programed by Tracy and have not even paid much= attention to it or even checked it. Good luck on your next flight. I assu= me you are using the EM-2 and EC-2. What prop are you using? You make a go= od point on checking for CO. I just have one of those stick on cards and= should borrow a real meter as I am running SS flex tube also. 
Don 
RV-8 renesis 76/88 cato 
 
-- 
Homepage: http://www= .flyrotary.com/ 
Archive and UnSub: http://mail.lancaironline.net:81/lists/fly= rotary/List.html 

 ----------MB_8CD23E7F63AC6B4_1404_A3F_webmail-d091.sysops.aol.com--