X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from smtp110.sbc.mail.ne1.yahoo.com ([98.138.84.53] verified) by logan.com (CommuniGate Pro SMTP 5.4c3j) with ESMTPS id 4984264 for flyrotary@lancaironline.net; Sun, 15 May 2011 09:45:23 -0400 Received-SPF: softfail receiver=logan.com; client-ip=98.138.84.53; envelope-from=echristley@nc.rr.com Received: from [192.168.1.2] (localhost [127.0.0.1]) by smtp110.sbc.mail.ne1.yahoo.com (8.14.4/8.14.4) with ESMTP id p4FDijLQ009660 for ; Sun, 15 May 2011 06:44:46 -0700 (PDT) (envelope-from echristley@nc.rr.com) Message-ID: <4DCFD8C2.3070509@nc.rr.com> Date: Sun, 15 May 2011 09:44:34 -0400 From: Ernest Christley Reply-To: echristley@att.net User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.17) Gecko/20110424 Lightning/1.0b2 Thunderbird/3.1.10 MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: Starter abuse. References: In-Reply-To: Content-Type: multipart/alternative; boundary="------------060303030603090607050707" This is a multi-part message in MIME format. --------------060303030603090607050707 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit On 05/15/2011 09:12 AM, Bill Bradburry wrote: > > Earnest, > > If it is the first time I am starting my engine, I set the mixture at > full rich, give it about 2-3 primer shots, and it kicks off after only > a couple of blades. If I don't do the primer shots, I get a response > like you did. You didn't mention if you used primer shots??? As the > engine warms up, I reduce the mixture gradually back to the center > mark at idle. > > Don't go overboard on the primer shots. You will flood the engine. > Primer shots are one of the adjustable parameters in MegaSquirt, and it varies based on temperature. There is also a "clearing shot", meant to release any vapor in the fuel lines from a hot engine. There is also a cranking enrichment and a warm-up enrichment, again both being further adjusted with a table lookup based on temperature. My goal for the first run was to get to spin without the aid of the starter. > Bill B > > ------------------------------------------------------------------------ > > *From:*Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] > *On Behalf Of *Ernest Christley > *Sent:* Sunday, May 15, 2011 2:45 AM > *To:* Rotary motors in aircraft > *Subject:* [FlyRotary] Starter abuse. > > http://www.youtube.com/watch?v=YoYEZk6X1nA > > This portion from the datalog is where it kicked off and ran. > --------------060303030603090607050707 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit On 05/15/2011 09:12 AM, Bill Bradburry wrote:

Earnest,

If it is the first time I am starting my engine, I set the mixture at full rich, give it about 2-3 primer shots, and it kicks off after only a couple of blades. If I don’t do the primer shots, I get a response like you did. You didn’t mention if you used primer shots??? As the engine warms up, I reduce the mixture gradually back to the center mark at idle.

Don’t go overboard on the primer shots. You will flood the engine.

Primer shots are one of the adjustable parameters in MegaSquirt, and it varies based on temperature. There is also a "clearing shot", meant to release any vapor in the fuel lines from a hot engine. There is also a cranking enrichment and a warm-up enrichment, again both being further adjusted with a table lookup based on temperature.

My goal for the first run was to get to spin without the aid of the starter.

Bill B

From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Ernest Christley
Sent: Sunday, May 15, 2011 2:45 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Starter abuse.

http://www.youtube.com/watch?v=YoYEZk6X1nA

This portion from the datalog is where it kicked off and ran.

--------------060303030603090607050707--