To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Message-Id: <AA-2F92541962AD95B64E873A9A94EBBF5A-ZZ@www4.prodigy.net>
Date: Mon, 08 Dec 2003 16:51:58 -0500
From: DELTAFLYER@prodigy.net
Subject: Re: [FlyRotary] EC2 MAP Table

Perry,
This sounds like a great diagnostic tool.
Since I just bought a Pocket PC and have no laptop I'd 
be real grateful if you ported to run on the PPC.
Thanks,
Jim
--- Original Message ---
From: Perry Casson <pcasson@sasktel.net>
To: "Rotary motors in aircraft" 
<flyrotary@lancaironline.net>
Subject: [FlyRotary] EC2 MAP Table

>To try diagnosing a "runs rough at certain throttle 
settings" problem on my plane I wrote a little windows 
application that can talk to Tracy's EC2 and display 
real-time parameters plus upload/download the MAP 
table to my laptop.   Here's a spreadsheet of the 
resulting high and low speed MAP Tables.  No wonder 
there are some rough spots, after seeing this I'm 
surprised the engine runs as well as it does.  I'm 
finding fixing rough spots hard to do from EC2 panel 
being as soon as the engine hits a rough spot the 
manifold pressure changes and it hops over to a good 
MAP value.  Why the table looks as wild as it does is 
a mystery to me but the general trend to lean from 
default at low manifold pressure and richen the 
mixture a bit at high power is correct.  I'm going to 
try smoothing these numbers by hand and uploading 
something that looks a bit more sane.
>
>This software (EC2Params.exe) and instructions on how 
to connect a laptop to a EC2 will be posted after I 
clean things up a bit.  Perhaps I'll port it to 
PocketPC as well if there is interest.
>
>     
>Perry Casson
>Glastar/13B
>http://eaa154.dhs.org/perry