X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from qmta07.westchester.pa.mail.comcast.net ([76.96.62.64] verified) by logan.com (CommuniGate Pro SMTP 5.4.5) with ESMTP id 5564707 for flyrotary@lancaironline.net; Mon, 28 May 2012 23:37:52 -0400 Received-SPF: pass receiver=logan.com; client-ip=76.96.62.64; envelope-from=wschertz@comcast.net Received: from omta15.westchester.pa.mail.comcast.net ([76.96.62.87]) by qmta07.westchester.pa.mail.comcast.net with comcast id FfT61j0021swQuc57fdGFd; Tue, 29 May 2012 03:37:16 +0000 Received: from WschertzPC ([71.57.77.95]) by omta15.westchester.pa.mail.comcast.net with comcast id FfdF1j00f23NHuF3bfdGLN; Tue, 29 May 2012 03:37:16 +0000 Message-ID: From: "Bill Schertz" To: "Rotary motors in aircraft" References: In-Reply-To: Subject: Re: [FlyRotary] Injector balancing Date: Mon, 28 May 2012 22:37:14 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_000C_01CD3D22.6D97F4F0" X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 15.4.3555.308 X-MimeOLE: Produced By Microsoft MimeOLE V15.4.3555.308 This is a multi-part message in MIME format. ------=_NextPart_000_000C_01CD3D22.6D97F4F0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Mark, Is rotor 1 connected to the tach signal line on the Blue Mountain? When = I had that, the Blue Mountain unit drew enough current to hold that = injector open. Putting a resistor in line solved the problem. Bill Schertz KIS Cruiser #4045 N343BS Phase one testing Completed From: Mark Steitle=20 Sent: Monday, May 28, 2012 8:38 PM To: Rotary motors in aircraft=20 Subject: [FlyRotary] Injector balancing I'm in a bit of a dilemma and thought I would put this out here for the = group to ponder. =20 First, this is a p-ported 3-rotor, running RWS EC-2 and psru. I'm = running 460cc Mazda primary injectors and 60lb Deka IV secondary = injectors. Primary injectors share a common fuel rail and are = positioned close to the engine, between throttle plate and rotor face. = Secondary injectors are located ahead of the throttle plates. As this = is a p-port engine, it has three 1-bbl TB's, located very close to the = engine. Engine will idle down to 800 - 900 rpm, but I normally idle it = around 1500 - 1600 rpm. The problem is this, the #1 rotor cuts out at low to mid-range RPM, = evidenced by obvious reduced power, very low EGT's on rotor #1, change = in exhaust tone, a dark residue in the #1 exhaust port and dark spark = plugs on #1. Just today I was able to get it to run normally with = balanced EGT's by adjusting Mode 4, but I had to go full CCW with the = program knob to achieve this. (Mode 4 & 5 adjust similar to Mode 1) = Now it runs well mid-range and the dropped #1 rotor is happily firing = away. I still have some tuning to do, but after adjusting Mode 4, I can = now move forward with that. =20 To date I have tried the following: 1. Performed a compression check - OK 2. Swapped primary injector with #3 - no change 3. Swapped coils with #3 - no change 4. Replaced spark plugs - no change, except initially it ran better = until the plug fouled 5. Checked plug wires with ohm meter - checked good 6. Sent EC-2 to Tracy for latest s/w and checkout - no abnormalities = found, latest s/w installed 7. Checked secondary injectors for leakage - none seen Can anyone suggest a reason why the #1 primary injector runs extremely = rich when set to the factory default setting? Is this something to be = concerned with? Thanks, Mark ------=_NextPart_000_000C_01CD3D22.6D97F4F0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Mark,
Is rotor 1 connected to the tach signal line on the Blue Mountain? = When I=20 had that, the Blue Mountain unit drew enough current to hold that = injector open.=20 Putting a resistor in line solved the problem.
 
Bill=20 Schertz
KIS Cruiser #4045
N343BS
Phase one testing = Completed
 
Sent: Monday, May 28, 2012 8:38 PM
Subject: [FlyRotary] Injector balancing
 
I'm=20 in a bit of a dilemma and thought I would put this out here for the = group to=20 ponder.  =20
 
First, this is a p-ported 3-rotor, running RWS EC-2 and psru.  = I'm=20 running 460cc Mazda primary injectors and 60lb Deka IV secondary=20 injectors.  Primary injectors share a common fuel rail and are = positioned=20 close to the engine, between throttle plate and rotor face.  = Secondary=20 injectors are located ahead of the throttle plates.  As this is a = p-port=20 engine, it has three 1-bbl TB's, located very close to the engine.  = Engine=20 will idle down to 800 - 900 rpm, but I normally idle it around 1500 - = 1600=20 rpm.
 
The problem is this, the #1 rotor cuts out at low to mid-range RPM, = evidenced by obvious reduced power, very low EGT's on rotor #1, change = in=20 exhaust tone, a dark residue in the #1 exhaust port and dark spark plugs = on=20 #1.  Just today I was able to get it to run normally with balanced = EGT's by=20 adjusting Mode 4, but I had to go full CCW with the program knob = to=20 achieve this.  (Mode 4 & 5 adjust similar to Mode 1)  Now = it runs=20 well mid-range and the dropped #1 rotor is happily firing away.  I = still=20 have some tuning to do, but after adjusting Mode 4, I can now move = forward with=20 that.  
 
To date I have tried the following:
  1.  Performed a compression check - OK
  2.  Swapped primary injector with #3 - no change
  3.  Swapped coils with #3 - no change
  4.  Replaced spark plugs - no change, except initially = it ran=20 better until the plug fouled
  5.  Checked plug wires with ohm meter - checked = good
  6.  Sent EC-2 to Tracy for latest s/w and checkout - no = abnormalities found, latest s/w installed
  7.  Checked secondary injectors for leakage - none = seen
 
Can anyone suggest a reason why the #1 primary injector runs = extremely rich=20 when set to the factory default setting?  Is this something to be = concerned=20 with?
 
Thanks,
Mark
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