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Date: Sun, 8 Jan 2006 14:02:15 -0700
From: Bob White <rlwhite@comcast.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: Re: Stopping engine
Message-Id: <20060108140215.29d72d0c.rlwhite@comcast.net>
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Hi Ed,

I'll bet the injector shut off switches are the only two I didn't hit.
It looks like the first consideration of a first start should be "How
am I going to stop this engine."  Wish I had thought of it before hand.

Bob W.

On Sun, 8 Jan 2006 14:39:09 -0500
"Ed Anderson" <eanderson@carolina.rr.com> wrote:

> The three quickest ways to stop an engine (without throwing a monkey wrench 
> into the gear box {:>))  that I can think of are:
> 
> 1.  Kill the ignition
> 2.  Shut off the injectors
> 3.  Shut off the fuel
> Turning off the power to the EC2 will not necessarily stop the engine - if 
> you still have power to the injectors.  Unless Tracy has designed it out in 
> later versions, there is a "sneak" circuit in the EC2 that permits 
> sufficient power from the injector power line for the EC2 to function and 
> the engine to keep running even after turning "off" the EC2.  Now if your 
> power to both the EC2 and injectors are controlled by the same 
> switch/Circuit breaker then no problem - but, if they are not - then beware.
> 
> Killing the ignition is probably the quickest, but using the injector 
> switches that Tracy has in his instructions turns out to be the quickest for 
> me.  Turning off the fuel pumps will stop it but not instantaneously - 
> there is still sufficient pressure for additional squirts until the 
> pressure/fuel is exhausted.  Turning off the injector power removes the 
> means for the injector to open and that stop the fuel flow - right then!
> 
> Its  a bit faster to turn off the injectors (in my case)  than trying to 
> find the right circuit breaker (ignition) on the panel and pulling it.  The 
> two injector switches are right below my throttle and I normally use them 
> for starting and stopping.
> 
> FWIW
> 
> Ed
> Ed Anderson
> Rv-6A N494BW Rotary Powered
> Matthews, NC
> eanderson@carolina.rr.com
> 
> ----- Original Message ----- 
> From: "Bob White" <rlwhite@comcast.net>
> To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
> Sent: Sunday, January 08, 2006 10:08 AM
> Subject: [FlyRotary] Re: First Engine Start
> 
> 
> > Hi Steve,
> >
> > Mine is wired the same way.  That's the way Jim Bede designed it, and I
> > suspect it must be the way at least some of the GA planes are wired.
> > I'm thinking about changing it around as I can't charge both batteries
> > at the same time without turning on the master switches.  (Normal bus
> > and critical bus that I added.)  I'll have to think about the
> > consequences a little more though.
> >
> > I'm pretty sure I got it stopped by killing the fuel pump also, but I
> > was madly turning off every switch I could get my hands on.  Probably
> > the quickest would have been to pop the circuit breaker on the EC2 but
> > that would have required too much thinking time.
> >
> > Bob W.
> >
> >
> > On Sun, 8 Jan 2006 08:54:38 -0500
> > "Steve Brooks" <prvt_pilot@yahoo.com> wrote:
> >
> >> Bob,
> >>
> >> Congrats on the first start.  I had a similar experience on my first 
> >> start,
> >> but not at full throttle.  I didn't have a prop, and had set the throttle
> >> stop to have a small amount of opening on the butterfly.  I didn't 
> >> realize
> >> how little air it takes to run a pretty high RPM.  It fired up at a 
> >> pretty
> >> high RPM, and when I killed the master, it kept running, because of the 
> >> way
> >> I had wired the alternator, it was sustaining the electrical power to the
> >> engine.  I finally shut off the fuel to get it stopped.
> >>
> >> Reading your report brought back some not so fond memories.  Luckily 
> >> these
> >> engines will take some abuse and not cause damage.
> >>
> >> Steve Brooks
> >> Cozy MKIV N75CZ
> >> Turbo Rotary
> >>
> >>
> >> -----Original Message-----
> >> From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]On
> >> Behalf Of Bob White
> >> Sent: Saturday, January 07, 2006 8:44 PM
> >> To: Rotary motors in aircraft
> >> 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
> >> N93BD - Rotary Powered BD-4 (The engine is running)
> >> Custom Cables for your rotary installation -
> >> http://www.roblinphoto.com/shop/
> >>
> >> --
> >> Homepage:  http://www.flyrotary.com/
> >> Archive and UnSub:   http://mail.lancaironline.net/lists/flyrotary/
> >>
> >>
> >> --
> >> Homepage:  http://www.flyrotary.com/
> >> Archive and UnSub:   http://mail.lancaironline.net/lists/flyrotary/
> >
> >
> > -- 
> > http://www.bob-white.com
> > N93BD - Rotary Powered BD-4 (first engine start 1/7/06)
> > Custom Cables for your rotary installation -
> > http://www.roblinphoto.com/shop/
> >
> > --
> > Homepage:  http://www.flyrotary.com/
> > Archive and UnSub:   http://mail.lancaironline.net/lists/flyrotary/
> > 
> 
> 
> 
> --
> Homepage:  http://www.flyrotary.com/
> Archive and UnSub:   http://mail.lancaironline.net/lists/flyrotary/


-- 
http://www.bob-white.com
N93BD - Rotary Powered BD-4 (first engine start 1/7/06)
Custom Cables for your rotary installation -
http://www.roblinphoto.com/shop/