X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from qmta07.emeryville.ca.mail.comcast.net ([76.96.30.64] verified) by logan.com (CommuniGate Pro SMTP 5.4.5) with ESMTP id 5565831 for flyrotary@lancaironline.net; Tue, 29 May 2012 11:21:36 -0400 Received-SPF: pass receiver=logan.com; client-ip=76.96.30.64; envelope-from=wschertz@comcast.net Received: from omta14.emeryville.ca.mail.comcast.net ([76.96.30.60]) by qmta07.emeryville.ca.mail.comcast.net with comcast id FrLf1j0051HpZEsA7rLy9W; Tue, 29 May 2012 15:20:58 +0000 Received: from WschertzPC ([75.205.150.205]) by omta14.emeryville.ca.mail.comcast.net with comcast id FrLa1j00e4S8aWb8arLg8b; Tue, 29 May 2012 15:20:53 +0000 Message-ID: <5DADB92CBADD49958287FEBCD68AD10A@WschertzPC> From: "Bill Schertz" To: "Rotary motors in aircraft" References: In-Reply-To: Subject: Re: [FlyRotary] Re: Injector balancing Date: Tue, 29 May 2012 10:19:29 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0016_01CD3D84.8871F700" 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_0016_01CD3D84.8871F700 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable At the recommendation of Tracy, I used a 2K resistor. seemed to do the = job. I came to find this out by testing whether the injectors fired in mode 0 = when button pushed. One injector wasn=E2=80=99t seeming to fire, no = click when pushing the button. Then started switching injector wires = around to test if it was the injector or the wiring. Injectors okay, = something with wiring. then noticed that with EC-2 on, BMA off, the injector would fire when = the suspect wiring was plugged in to the injector. It was being held = open by current drain through the BMA unit. Bill Schertz KIS Cruiser #4045 N343BS Phase one testing Completed From: Mark Steitle=20 Sent: Tuesday, May 29, 2012 8:14 AM To: Rotary motors in aircraft=20 Subject: [FlyRotary] Re: Injector balancing Bill, =20 Since I do have a BMA EFIS-1 (for just a little longer), this is a very = real possibility. I'll check this next weekend. What value resistor = did you install? Thanks, Mark On Mon, May 28, 2012 at 10:37 PM, Bill Schertz = wrote: 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_0016_01CD3D84.8871F700 Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: quoted-printable
At the recommendation of Tracy, I used a 2K resistor. seemed to do = the=20 job.
 
I came to find this out by testing whether the injectors fired in = mode 0=20 when button pushed. One injector wasn=E2=80=99t seeming to fire, no = click when pushing=20 the button. Then started switching injector wires around to test if it = was the=20 injector or the wiring. Injectors okay, something with wiring.
 
then noticed that with EC-2 on, BMA off, the injector would fire = when the=20 suspect wiring was plugged in to the injector.  It was being held = open by=20 current drain through the BMA unit.
 
Bill=20 Schertz
KIS Cruiser #4045
N343BS
Phase one testing = Completed
 
Sent: Tuesday, May 29, 2012 8:14 AM
Subject: [FlyRotary] Re: Injector = balancing
 
Bill, =20
 
Since I do have a BMA EFIS-1 (for just a little longer), this is a = very=20 real possibility.  I'll check this next weekend.  What value = resistor=20 did you install?
 
Thanks,
Mark

On Mon, May 28, 2012 at 10:37 PM, Bill Schertz = <wschertz@comcast.net> wrote:
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=20 open. Putting a resistor in line solved the problem.
 
Bill = Schertz
KIS Cruiser=20 #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. =20 Engine will idle down to 800 - 900 rpm, but I normally idle it around = 1500 -=20 1600 rpm.
 
The problem is this, the #1 rotor cuts out at low to mid-range = RPM,=20 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=20 by 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=20 runs well mid-range and the dropped #1 rotor is happily firing = away.  I=20 still have some tuning to do, but after adjusting Mode 4, I can now = move=20 forward with 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=20 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=20 rich when set to the factory default setting?  Is this something = to be=20 concerned with?
 
Thanks,
Mark
 
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