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To: flyrotary@lancaironline.net
Subject: Slow but steady progress
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Date: Fri, 29 Nov 2013 23:14:26 -0500 (EST)

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I got a chance to play with 89SE today, I've been running and tuning after =
all the tribulations of making right an improperly built engine with an imp=
roperly sized turbo.
Today I re-read Tracy's manual for EC-2 & EM-3 and started/warmed the engin=
e. Then I bit the bullet and returned to the EM-2 default setting (Mode 1 p=
ower up). Just like I had intended in my last letter. I tried auto tune wit=
h the EM-3, but I had a steep slope on the EM-3 correction table graph. so =
I had no way to establish a safe state of mixture beyond ground running con=
ditions.
Well it works a charm! I think it's flyable now. I taxied about and gunned =
it a few times. I feel a transition when injector staging occurs, and I cou=
ld work on the low idle, but most of the taxi, run up and a brief blast of =
pre take off power all works well with the mixture knob at 12:00.
So I feel confident that 89SE can fly when the weather improves, and I get =
the rest of the fairings on.
I'll do some more tethered high power runs and take pictures of the EM-3 da=
ta page, and the dual manifold pressure gauge, then go home and make anothe=
r RPM, Boost & fuel flow graph.=20
I'm collecting intercooler bits, with the intent that I'll have everything =
together to install it on the engine, and fiberglass up the inlet duct and =
sealed air exit. The only way I could control heat on the engine water and =
oil was by having the inlets & outlets of the heat exchangers be separate f=
rom each other, so I plan this also for the intercooler.=20

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<font color=3D'black' size=3D'2' face=3D'arial'>
<div><font style=3D"background-color: transparent;">I got a chance to play =
with 89SE today, I've been running and tuning after all the tribulations of=
 making right an&nbsp;improperly built&nbsp;engine&nbsp;with an improperly =
sized turbo.</font></div>

<div>Today I re-read Tracy's manual for EC-2 &amp; EM-3 and started/warmed =
the engine. Then I bit the bullet and returned to the EM-2&nbsp;default&nbs=
p;setting&nbsp;(Mode 1 power up). Just like I had intended in my last lette=
r. I tried auto tune with the EM-3, but I had a steep slope on the EM-3 cor=
rection table graph. so I had no way to establish a safe state of mixture b=
eyond ground running conditions.</div>

<div>Well it works a charm! I think it's flyable now. I taxied about and gu=
nned it a few times. I feel a transition when injector staging occurs, and =
I could work on the low idle, but most of the taxi, run up and a brief blas=
t of pre take off power all works well with the mixture knob at 12:00.</div=
>

<div>So I feel confident that 89SE can fly when the weather improves, and I=
 get the rest of the fairings on.</div>

<div>I'll do some more tethered high power runs and take pictures of the EM=
-3 data page, and the dual manifold pressure gauge, then go home and make a=
nother RPM, Boost &amp; fuel flow&nbsp;graph. </div>

<div>I'm collecting intercooler bits, with the intent that I'll have everyt=
hing together to install it on the engine, and fiberglass up the inlet&nbsp=
;duct and sealed air exit. The only way I could control heat on the&nbsp;en=
gine water and oil was by having the inlets &amp; outlets of the heat excha=
ngers be separate from each other, so I plan this&nbsp;also for the interco=
oler.&nbsp;</div>
</font>
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