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Date: Mon, 30 Nov 2009 12:30:35 -0500
Message-ID: <7a025aa00911300930u7f214f72qb9ac4ae5b72c773a@mail.gmail.com>
Subject: First start on new engine - sort of.....
From: Stephen Brooks <cozy4pilot@gmail.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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I started the new engine this weekend, after getting the intermittent spark
issue resolved, only to discover that I have some other issue.
When I tried to start the engine, it popped several times on successive
turns, but wouldn't start.  After trying several times, I did get it to
start, but it seemed to only be running on one rotor.  It died after 10-15
seconds, and I could not get it to restart, so I pushed it back inside and
charged the battery.

I tried it again yesterday, and had a very hard time getting it to start.
It finally started, and I ran it for about a minute.  It ran very rough, and
felt to me like it was running on only one rotor again.  After shutting it
down, I felt both rotor housings to determine which one was running, and I
was surprised that both felt the same temperature.  I suppose that this
means that it was running on both rotors, but very rough, and not much
power.  Both were warm, but definitely not hot after only a minute or so of
running.

I get a consistent popping when cranking it over, that feels like the timing
is way off.  I double checked the static timing and verified it was 35 BTC.
I tried moving it to about 25 BTC, and while I did not get it to start, the
popping was the same.

I also verified that the injectors were wired correctly, by checking each
one from the EC-2 connector.  The injector diagnostic, and ignition
diagnostic check fine.  The only thing that I noticed that was odd was that
while cranking, the EM-3 showed RPM (250-300), but while running it was
reading zero.

It has been several months since I've added any fuel, so I was thinking of
draining the fuel tank, and putting in some fresh fuel, but I suspect that
is not the issue.
It seems to me that the timimng is way off or something.

Steve Brooks

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I started the new engine this weekend, after getting the intermittent spark=
 issue resolved, only to discover that I have some other issue.<br>When I t=
ried to start the engine, it popped several times on successive turns, but =
wouldn&#39;t start.=A0 After trying several times, I did get it to start, b=
ut it seemed to only be running on one rotor.=A0 It died after 10-15 second=
s, and I could not get it to restart, so I pushed it back inside and charge=
d the battery.<br>
<br>I tried it again yesterday, and had a very hard time getting it to star=
t.=A0 It finally started, and I ran it for about a minute.=A0 It ran very r=
ough, and felt to me like it was running on only one rotor again.=A0 After =
shutting it down, I felt both rotor housings to determine which one was run=
ning, and I was surprised that both felt the same temperature.=A0 I suppose=
 that this means that it was running on both rotors, but very rough, and no=
t much power.=A0 Both were warm, but definitely not hot after only a minute=
 or so of running.<br>
<br>I get a consistent popping when cranking it over, that feels like the t=
iming is way off.=A0 I double checked the static timing and verified it was=
 35 BTC.=A0 I tried moving it to about 25 BTC, and while I did not get it t=
o start, the popping was the same.<br>
<br>I also verified that the injectors were wired correctly, by checking ea=
ch one from the EC-2 connector.=A0 The injector diagnostic, and ignition di=
agnostic check fine.=A0 The only thing that I noticed that was odd was that=
 while cranking, the EM-3 showed RPM (250-300), but while running it was re=
ading zero.<br>
<br>It has been several months since I&#39;ve added any fuel, so I was thin=
king of draining the fuel tank, and putting in some fresh fuel, but I suspe=
ct that is not the issue.<br>It seems to me that the timimng is way off or =
something.<br>
<br>Steve Brooks<br><br><br>

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