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Subject: Re: Bill Eslick's EC2 inspection
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From: Tracy <rwstracy@gmail.com>
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Date: Fri, 14 Oct 2011 16:02:17 -0400
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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Thought the group would like to hear what i found when I Finally had a chanc=
e to closely examine Bill's EC2.   I was hoping to find a definitive reason b=
ehind his sudden and complete loss of power on takeoff on his last flight.

On powering it up on the bench I found both A and B controllers Working norm=
ally.   Bill noted in his report that in the 'Fly The Plane' situation  call=
ed for in a power failure during takeoff he had not tried switching to contr=
oller B.  It does not appear that it would have done any good this time.=20

None of the parameters were set outside the expected range so no sign of dat=
a corruption.  In fact the only thing notable about the data downloaded from=
 it was the unusually smooth programming of the MAP table.  Most of the time=
 I find units returned for updates with choppy looking data in the table ind=
icating a lack of care or proper methodology in setting it up.  A and B cont=
rollers had identical data. =20

The PCM was also returned with the unit so just in case the control panel wa=
s the cause I substituted it for the bench test panel I normally use.   Thou=
ght I saw a problem because the injection pulse width was so large that it c=
ould well have caused engine flooding.  This was caused by the mixture contr=
ol being set fairly high and the cold start switch being in the on position.=
  This does not prove anything because that could easily have happened durin=
g removal of the panel from the plane or while packing it for shipping.  Whe=
n the switch and mixture control was returned to normal settings the injecti=
on pulse width returned to normal.

Ran the unit on the bench for several hours while heating and subjecting it t=
o vibration but nothing else turned up.

Tracy=