X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fmailhost06.isp.att.net ([207.115.11.56] verified) by logan.com (CommuniGate Pro SMTP 5.4c3j) with ESMTP id 4984283 for flyrotary@lancaironline.net; Sun, 15 May 2011 10:12:36 -0400 Received-SPF: none receiver=logan.com; client-ip=207.115.11.56; envelope-from=bbradburry@bellsouth.net Received: from desktop (adsl-98-85-106-31.mco.bellsouth.net[98.85.106.31]) by isp.att.net (frfwmhc06) with SMTP id <20110515141201H0600e88ire>; Sun, 15 May 2011 14:12:01 +0000 X-Originating-IP: [98.85.106.31] From: "Bill Bradburry" To: "'Rotary motors in aircraft'" References: In-Reply-To: Subject: RE: [FlyRotary] Re: Starter abuse. Date: Sun, 15 May 2011 10:12:00 -0400 Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0003_01CC12E8.87F49ED0" X-Mailer: Microsoft Office Outlook 11 Thread-Index: AcwTBlfCAwx+q/INRqGA2pY1MJsAggAAq6eg X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6001.18049 This is a multi-part message in MIME format. ------=_NextPart_000_0003_01CC12E8.87F49ED0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Earnest, When I first turn on my fuel pump, I can hear vapor being purged thru the lines. I let the pump run for a few seconds and also turn on the secondary pump to purge it as well prior to beginning the engine start procedure. This is even more important if the engine is heat soaked. Mark's starting procedure is very close to mine at the various temperature situations. Your manifold pressure in KiloPascals threw me for a loop for a while! :>) Bill B _____ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Ernest Christley Sent: Sunday, May 15, 2011 9:45 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Starter abuse. 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. ------=_NextPart_000_0003_01CC12E8.87F49ED0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Earnest,

 

When I first turn on my fuel pump, = I can hear vapor being purged thru the lines.  I let the pump run for a = few seconds and also turn on the secondary pump to purge it as well prior to beginning the engine start procedure.  This is even more important = if the engine is heat soaked.

 

Mark’s starting procedure is = very close to mine at the various temperature = situations.

 

Your manifold pressure in = KiloPascals threw me for a loop for a while!  = :>)

 

Bill B =

 

From: Rotary motors in = aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Ernest Christley
Sent: Sunday, May 15, = 2011 9:45 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: = Starter abuse.

 

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@lancaironlin= e.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=3DYoYEZk6X1nA
This portion from the datalog is where it kicked off and = ran.

 

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