X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imr-da06.mx.aol.com ([205.188.169.203] verified) by logan.com (CommuniGate Pro SMTP 5.4c3j) with ESMTP id 4983757 for flyrotary@lancaironline.net; Sat, 14 May 2011 19:32:40 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.188.169.203; envelope-from=Bktrub@aol.com Received: from imo-da02.mx.aol.com (imo-da02.mx.aol.com [205.188.169.200]) by imr-da06.mx.aol.com (8.14.1/8.14.1) with ESMTP id p4ENW5UX002868 for ; Sat, 14 May 2011 19:32:05 -0400 Received: from Bktrub@aol.com by imo-da02.mx.aol.com (mail_out_v42.9.) id q.10aa.26425f2 (43841) for ; Sat, 14 May 2011 19:32:01 -0400 (EDT) Received: from smtprly-me01.mx.aol.com (smtprly-me01.mx.aol.com [64.12.95.102]) by cia-dc03.mx.aol.com (v129.10) with ESMTP id MAILCIADC036-b2914dcf10f063; Sat, 14 May 2011 19:32:01 -0400 Received: from webmail-d126 (webmail-d126.sim.aol.com [149.174.18.16]) by smtprly-me01.mx.aol.com (v129.10) with ESMTP id MAILSMTPRLYME011-b2914dcf10f063; Sat, 14 May 2011 19:32:00 -0400 References: To: flyrotary@lancaironline.net Subject: Re: [FlyRotary] Re: Engine Tuning Date: Sat, 14 May 2011 19:32:00 -0400 X-AOL-IP: 50.46.100.112 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_8CDE0A641ED1CB5_1968_82B78_webmail-d126.sysops.aol.com" X-Mailer: AOL Webmail 33668-STANDARD Received: from 50.46.100.112 by webmail-d126.sysops.aol.com (149.174.18.16) with HTTP (WebMailUI); Sat, 14 May 2011 19:32:00 -0400 Message-Id: <8CDE0A641D54EE1-1968-5A993@webmail-d126.sysops.aol.com> X-Spam-Flag:NO X-AOL-SENDER: Bktrub@aol.com ----------MB_8CDE0A641ED1CB5_1968_82B78_webmail-d126.sysops.aol.com Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="us-ascii" You are right, mine is a '93 BREW. Brian Trubee -----Original Message----- From: Tracy To: Rotary motors in aircraft Sent: Sat, May 14, 2011 12:02 pm Subject: [FlyRotary] Re: Engine Tuning As Steve pointed out, "hand grenades" are not an indication of bad mixture= . I suspect bad crank sensor detection. This can be caused by noise, war= ped trigger wheel, etc. If the EC2 is an early version, it might need the= Renesis CAS mod since the 3rd gen sensor is similar. Btw, the 13BREW sta= rted in 93 so I'm still not sure which engine you have. Tracy Sent from my iPad On May 13, 2011, at 8:34 PM, bktrub@aol.com wrote: 92 13BREW, normally alspirated, it has 28 lb primaries and 40 lb secondari= es- That's what it came with. =20 Brian Trubee -----Original Message----- From: Tracy To: Rotary motors in aircraft Sent: Fri, May 13, 2011 3:48 pm Subject: [FlyRotary] Re: Engine Tuning Brian, What engine are you using? 2nd gen, Renesis, etc. Tracy Sent from my iPad On May 13, 2011, at 5:35 PM, bktrub@aol.com wrote: Since the weather has been cooperating lately, I've had the opportunity to= put a few more hours on the airplane. On the ground, I can go from an idl= e up to full throttle and the engine will be smooth. But when I take off,= it seems that as soon as I'm up a few hundred feet off the runway, I get= hellacious backfiring at full throttle. I can mitigate it a bit by thrott= ling back to about 5100 rpm, and turning the mixture knob to near full ric= h. It's getting to be a bit nerve wracking to take off thinking I've got= it smoothed out and then get a series of hand grenades going off under my= butt. I'm thinking that I'm still running too lean up at map address 106= or so. So, I go into the edit page and richen up the mixture around those= addresses. I think I'm creeping up on smooth full throttle running. =20 The good news is that my coolant runs at 175 degrees and oil at less- so= the cooling is more than effective, I just need to close up my air inlet= a bit or restrict the outflow. =20 Brian Trubee ----------MB_8CDE0A641ED1CB5_1968_82B78_webmail-d126.sysops.aol.com Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset="us-ascii"
You are right, mine is a= '93 BREW.
 
Brian Trubee



-----Original Message-----
From: Tracy <rwstracy@gmail.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Sat, May 14, 2011 12:02 pm
Subject: [FlyRotary] Re: Engine Tuning

As Steve pointed out, "hand grenades" are not an indication of bad mi= xture.  I suspect bad crank sensor detection.  This can be cause= d by noise, warped trigger wheel, etc.  If the EC2 is an early versio= n, it might need the Renesis CAS mod since the 3rd gen sensor is similar.=  Btw, the 13BREW started in 93 so I'm still not sure which engine yo= u have.

Tracy

Sent from my iPad

On May 13, 2011, at 8:34 PM, bktrub@aol.= com wrote:

92 13BREW, normally alspi= rated, it has 28 lb primaries and 40 lb secondaries- That's what it came= with.
 
Brian Trubee



-----Original Message-----
From: Tracy <rwstracy@gmail.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Fri, May 13, 2011 3:48 pm
Subject: [FlyRotary] Re: Engine Tuning

Brian,
   What engine are you using?  2nd gen, Renesis, etc.<= /div>

Tracy

Sent from my iPad

On May 13, 2011, at 5:35 PM, bktrub@aol.com wrote:


Since the weather has been cooperating lately, I've had the opportunity to= put a few more hours on the airplane. On the ground, I can go from an idl= e up to full throttle and the engine will be smooth. But when I take off,= it seems that as soon as I'm up a few hundred feet off the runway, I get= hellacious backfiring at full throttle. I can mitigate it a bit by thrott= ling back to about 5100 rpm, and turning the mixture knob to near full ric= h. It's getting to be a bit nerve wracking to take off thinking I've got= it smoothed out and then get a series of hand grenades going off under my= butt. I'm thinking that I'm still running too lean up at map address 106= or so. So, I go into the edit page and richen up the mixture around those= addresses. I think I'm creeping up on smooth full throttle running.
 
The good news is that my coolant runs at 175 degrees and oil at less-= so the cooling is more than effective, I just need to close up my air inl= et a bit or restrict the outflow.
 
Brian Trubee
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