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From: "Bill Schertz" <wschertz@comcast.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
References: <list-3734400@logan.com>
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Subject: Re: [FlyRotary] More progress, more questions....
Date: Sat, 27 Jun 2009 13:36:36 -0500
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Chris,
When you shut off the primaries, the secondary's are automatically turned 
on.

With respect to the tach, I suspect that you had the primaries turned off, 
(or a possible bad connection that caused them to go off) and it was running 
on the secondary's. According to Tracy, the tach should then read 0, but I 
had the same thing as you did, namely that 'noise' on the line when not 
getting the proper signal from the primaries caused the EM2 to register 
double the rpm that the engine was running at.


Bill Schertz
KIS Cruiser #4045
N343BS
Phase I testing
----- Original Message ----- 
From: "Christopher Barber" <CBarber@TexasAttorney.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Saturday, June 27, 2009 1:39 AM
Subject: [FlyRotary] More progress, more questions....


> Back out at the hangar today and some real progress made.
>
> Even though I am still having to "pump" the throttle to get the RPM down
> after having the throttled advanced, I do have the rpm and manifold
> pressure down.  I cannot find a leak, HOWEVER, when y'all (Bill I think)
> mentioned my new injectors it dawned on me that I installed the new
> injectors and then cranked it pretty much right up to see if it would
> even start.  From there I started playing with it.  I had meant to reset
> everything and start anew. However, I got caught up in the process and
> never got back to a base.  So, today I reset the EC2 to the factor
> setting and started it up and it ran even better.  Did the Mode 3 (at 22
> inch manifold pressure), 6, 2, 1 thing.  The engine is running better
> than ever.  I have the manifold pressure in the 12 range.
>
> I am concerned about some sputtering that is present around idle.  It is
> generally pretty smooth, but sputters too. Not sure what is causing it
> yet.  Thoughts?
>
> I still have some inconsistencies.  Today, I was running the engine at
> idle and everything seemed fine. It was idling at about 1500 rpm.  I
> looked away and when I looked back, the rpm was reading about 3300 rpm.
> Nothing had changed and the engine was still running at idle but the rpm
> was showing 3300, MP was 12.7.  I increased the throttle to see what
> would happen and the rpm shoot up to 8000 rpm.  What the hell?  I kept
> playing with the throttle and it continued.  I shut down and restarted
> and it continued.  Shut down again and grabbed a soda, came back and
> fired it up and it was showing normal again.  Hmmmmm?  I checked grounds
> but am not sure which wire to check...guess the one for the tack, but it
> is difficult to check when it goes away on its own.  DOH?  I will have
> to keep an eye on it.
>
> Also, even when the MP is below 15 and the secondaries should not be on,
> if I shut down the primaries the engine still runs.  Shouldn't it quit
> if I turn off the primaries since the secondaries should not kick in
> until the staging point?  Maybe this is too basic, but what am I
> missing.  Do the secondaries turn on automatically if I turn off the
> primaries as a safety featur????  It seems as if I may have read this
> somewhere, but I am not sure. I know the switch to the primaries and
> secondaries are wired correctly for the power and do not understand why
> they would run when power is removed.
>
> Next, in the documentation for the EC2, the diagrams and part of the
> text it shows that most of the wires should be run using 22 and/or 20
> AWG wire for the connections.  However, in ONE place in the document it
> states that the power wire to the coils should be 16 AWG.  Dang, I just
> rewired these down a special conduit using 20 AWG.  Do I need to redo
> them with 16.  My concern is whether the larger wire will fit down the
> tube.  I am not sure what is the most current documentation (btw, they
> differences are in the same manual)  Currently the 20 seems to be
> working well and I would prefer not to have to change them again,
> however, I do not wish to have a potential problem looming that surely
> will be easier to remedy now than later.  This is about a 15 foot run in
> the Velocity. BOB?
>
> Finally, for today anyway <g>, while my EM2 seems to be giving me good
> solid data, I do seem to have a problem with my mixture indicator.  The
> little bar graph jumps all over the place and gives me no real solid
> indication.  While I am pretty good at tuning by ear, it kinda defeats
> the purpose to have this great technology to be able to get some precise
> measures, if my key indicator is not giving me what I need.  I have of
> course checked the wires and even replaced the OXY sensor in the
> exhaust.  Thoughts.
>
> Oh, a final comment on progress.  My cooling continues to impress me.
> The bigger rad/fan and oil cooler is able to idle and even take some
> power for some amount of time allowing me to fiddle with things.  To
> REALLY illustrate the point, take a gander at the attached jpeg showing
> the ramp temperature this fine Houston afternoon....ok, in case you
> cannot open the file, it was 112.5 on the ramp and 100 in the shade.  I
> was still cooling <g>
>
> Also, here is a shot of the weird RPM, being much higher than is should
> be, with a low MP.
>
>
>
> Thanks guys and gals.
>
> All the best,
>
> Chris
>


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