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Date: Sat, 7 Jan 2006 19:27:36 -0700
From: Bob White <rlwhite@comcast.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: First Engine Start
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Hi Tracy,

That's what I figured, but I was hoping it would be a little lower,
mainly just so I could brag about how low it idled. :)  It's real sweet
at 1500, and I suspect I will find that's plenty low enough.

Both the EM2 and EC2 have worked perfectly so far as I've checked them
out.  I'm having some problems with fuel level readings, but I haven't
tried to figure out what's wrong yet.  I know I'll have to change the
parameters since I'm not using Van's (or any other) fuel guages.  I do
have the 200 ohm resistor from the pin to +5V.

Bob W.

On Sat, 7 Jan 2006 21:03:12 -0500
"Tracy Crook" <lors01@msn.com> wrote:

> Sounds good Bob.  Glad to hear that another EC2 ran more or less OK out of the box.
> 
> The natural resonance of the drive train is around 800 - 1000 rpm so don't be surprised if you can't get things perfectly smooth there.  An idle of 1200 - 1500 is perfectly acceptable in most aircraft (including mine).  That's about 460 rpm at the prop which is less than most Lycs idle at.
> 
> Tracy (finally out of Soob SVX controller hell)
>   ----- Original Message ----- 
>   From: Bob White<mailto:rlwhite@comcast.net> 
>   To: Rotary motors in aircraft<mailto:flyrotary@lancaironline.net> 
>   Sent: Saturday, January 07, 2006 8:44 PM
>   Subject: [FlyRotary] First Engine Start
> 
> 
> 
>   I'm happy to report that I actually started my engine today.  The only
>   terrifying event was due to a momentary brain fade on my part.  For
>   some reason I was thinking the throttle had to be all the way in to be
>   off.  Not sure why I got that into my head.  Maybe because I've kept it
>   in that position just so it was out of the way while I worked on the
>   electrical for the last month.  Any way, I cranked it over, it sort of
>   fired a little but did't start.  I hit the cold start switch and BAM,
>   it took off at WOT.  Sorry to say I don't know what the RPM reading was
>   as I was flipping every switch I could get my hands on to get it
>   stopped.  Glad I had primed the oil pump with the starter the other
>   day.  So the first 10 seconds or so of my first start was at WOT.  Also
>   glad I had a prop on it.
> 
>   I got that all sorted out and restarted the engine.  I ran it for 10-20
>   minutes and noted some random parameters.  Today's goal was to start the
>   engine, not take data.  I ran till the oil temp read 156 and water 182
>   before I shut it down.  Oil pressure at first start indicated 97 psi.
>   I didn't check at shutdown.
> 
>   The gear box seemed to rattle around 1000 rpm, but it idles pretty good
>   above 1200 or so.  (I need to start reading some of the EC2 and EM2
>   instructions.)  I made no attempt to set mixture or anything, and all of
>   the sensors are using the default settings.  The actual values may
>   change as I get calibration data.  I do have Tracy's latest self
>   adjusting mixture feature, and it did seem like the engine smoothed out
>   as it ran.
> 
>    tried to take some video of the first start, but for some reason it
>   didn't work. The tape moved but nothing was recorded.  Later I recorded
>   running the engine again.  As soon as I relearn how to get it onto the
>   computer, I will post a short clip on my web site.
> 
>   *Jerry Hey's Cool Tube Exhaust system.
> 
>   The best I can tell, this exhaust is doing a great job.  I took one
>   quick reading from the wing tip on the exhaust side of the plane.  I
>   saw 97 db on mode C and about 3000 rpm (Radio Shack sound meter).  I
>   will get more complete data in days to come.  There were a half dozen
>   people standing around watching all this, and no one mentioned anything
>   about the exhaust noise.
> 
>   All I can say is I'm thrilled to reach this milestone.
> 
>   Bob W.
> 
>   -- 
>   http://www.bob-white.com<http://www.bob-white.com/>
>   N93BD - Rotary Powered BD-4 (The engine is running)
>   Custom Cables for your rotary installation -
>   http://www.roblinphoto.com/shop/<http://www.roblinphoto.com/shop/>
> 
>   --
>   Homepage:  http://www.flyrotary.com/<http://www.flyrotary.com/>
>   Archive and UnSub:   http://mail.lancaironline.net/lists/flyrotary/<http://mail.lancaironline.net/lists/flyrotary/>
> 


-- 
http://www.bob-white.com
N93BD - Rotary Powered BD-4 (Projected engine start - maybe today)
Custom Cables for your rotary installation -
http://www.roblinphoto.com/shop/