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Date: Tue, 17 May 2011 09:02:17 -0400
From: Ernest Christley <echristley@nc.rr.com>
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: Reliably starting
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Ed Anderson wrote:
> Hi Ernest,
>  
> Not that familiar with the Microsquirt system.  But, If I am 
> interpreting parts of your graph (your Air/Fuel Ratio), it looks to me 
> that yes, the Fuel dramatically increases right after start to around 
> 10:1, but then it drops off to around 22:1 - a very lean mixture as 
> you pull the throttle back. 

It's a really slick system.  The ECU is a DIY thing.  Comes with a 
circuit board and LOTs of components.  You can also buy them already put 
together.  There are several different versions of the firmware, and 
several PC programs that computer for configuration, tuning and 
recording logs.   The flexibility and data exposure is incredible.

The logging system of MegaSquirt is one of the neater things I've seen.  
If you're interested you can download the viewer that I'm taking 
screenshots from for free.  It's called MegaLogViewer.  It has a nag 
screen to get you to support their project, but it isn't overly 
burdensome.  Then I can send you my datalogs, and you can play it back 
in real time and watch whichever parameters you're interested in.