X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-we0-f180.google.com ([74.125.82.180] verified) by logan.com (CommuniGate Pro SMTP 5.4.5) with ESMTPS id 5565964 for flyrotary@lancaironline.net; Tue, 29 May 2012 12:04:20 -0400 Received-SPF: pass receiver=logan.com; client-ip=74.125.82.180; envelope-from=msteitle@gmail.com Received: by weyt11 with SMTP id t11so2649965wey.25 for ; Tue, 29 May 2012 09:03:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; bh=OO91zbWKseD1fioj4CJqzXMOEG3BbRTzR/qyqTGwvu0=; b=QY6p6ivDoBYQAp8I4aKtSZsUmqlTWFsGgWCbZ6mVk6kTrQ59aPtMOSaBN72Ghk9bq2 X3Q52X/0aZurur5datmcCoWq9fiOeBZoEkRqM+AcFy0k7fe/WcU2WiSqUovUjszrNkT1 C5uMo3Va5JvWC4CsVLnkb+3pXV6jfhufiT3r+d/vLAzhFbSfk2YxiUoUBINlxAySp11a 6g/opK2ZzO26RpzG4bF2QOgOT4M59SaANXRDicYWnccPWo2Im2YJd7fH+SWokDI1KC47 FmOV91YeOG4ov2O454s57orqKUfkYGjVranNgBnKd/dVxw1ZUTC93wzOcZOXL8Hy1uh6 pAdg== MIME-Version: 1.0 Received: by 10.216.206.164 with SMTP id l36mr7877394weo.154.1338307423409; Tue, 29 May 2012 09:03:43 -0700 (PDT) Received: by 10.216.231.218 with HTTP; Tue, 29 May 2012 09:03:43 -0700 (PDT) In-Reply-To: References: Date: Tue, 29 May 2012 11:03:43 -0500 Message-ID: Subject: Re: [FlyRotary] Re: Injector balancing From: Mark Steitle To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=0016e6dbde1192967404c12efa09 --0016e6dbde1192967404c12efa09 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable Excellent detective work Bill. I'll try the injector test (Mode 0) to see if #1 fires with BMA on. Mark On Tue, May 29, 2012 at 10:19 AM, Bill Schertz wrote= : > 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=92t 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 > *Sent:* Tuesday, May 29, 2012 8:14 AM > *To:* Rotary motors in aircraft > *Subject:* [FlyRotary] Re: Injector balancing > > Bill, > > 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 wrot= e: > >> 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 inject= or >> open. Putting a resistor in line solved the problem. >> >> Bill Schertz >> KIS Cruiser #4045 >> N343BS >> Phase one testing Completed >> >> *From:* Mark Steitle >> *Sent:* Monday, May 28, 2012 8:38 PM >> *To:* Rotary motors in aircraft >> *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. >> >> 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 positione= d >> 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. Engi= ne >> will idle down to 800 - 900 rpm, but I normally idle it around 1500 - 16= 00 >> 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 i= n >> 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 wi= th >> 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 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 >> > > --0016e6dbde1192967404c12efa09 Content-Type: text/html; charset=windows-1252 Content-Transfer-Encoding: quoted-printable Excellent detective work Bill. =A0I'll try the injector test (Mode 0) t= o see if #1 fires with BMA on.

Mark

On Tue, May 29, 2012 at 10:19 AM, Bill Schertz <wschertz@= comcast.net> wrote:
At the recommendation of Tracy, I used a 2K resistor. seemed to do the= =20 job.
=A0
I came to find this out by testing whether the injectors fired in mode= 0=20 when button pushed. One injector wasn=92t seeming to fire, no click when pu= shing=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.
=A0
then noticed that with EC-2 on, BMA off, the injector would fire when = the=20 suspect wiring was plugged in to the injector.=A0 It was being held open by= =20 current drain through the BMA unit.
=A0
Bill=20 Schertz
KIS Cruiser #4045
N343BS
Phase one testing Completed
=A0
Sent: Tuesday, May 29, 2012 8:14 AM
Subject: [FlyRotary] Re: Injector balancing
=A0
Bill,=A0=20
=A0
Since I do have a BMA EFIS-1 (for just a little longer), this is a ver= y=20 real possibility.=A0 I'll check this next weekend.=A0 What value resist= or=20 did you install?
=A0
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? W= hen I=20 had that, the Blue Mountain unit drew enough current to hold that injecto= r=20 open. Putting a resistor in line solved the problem.
=A0
Bill SchertzKIS Cruiser=20 #4045
N343BS
Phase one testing Completed
=A0
Sent: Monday, May 28, 2012 8:38 PM
Subject: [FlyRotary] Injector balancing
=A0
I'm=20 in a bit of a dilemma and thought I would put this out here for the group= to=20 ponder.=A0=A0=20
=A0
First, this is a p-ported 3-rotor, running RWS EC-2 and psru.=A0 I&#= 39;m=20 running 460cc Mazda primary injectors and 60lb Deka IV secondary=20 injectors.=A0 Primary injectors share a common fuel rail and are position= ed=20 close to the engine, between throttle plate and rotor face.=A0 Secondary= =20 injectors are located ahead of the throttle plates.=A0 As this is a p-por= t=20 engine, it has three 1-bbl TB's, located very close to the engine.=A0= =20 Engine will idle down to 800 - 900 rpm, but I normally idle it around 150= 0 -=20 1600 rpm.
=A0
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, chang= e in=20 exhaust tone, a dark residue in the #1 exhaust port and dark spark plugs = on=20 #1.=A0 Just today I was able to get it to run normally with balanced EGT&= #39;s=20 by adjusting Mode 4, but I had to go full CCW with the program kno= b to=20 achieve this.=A0 (Mode 4 & 5 adjust similar to Mode 1)=A0 Now it=20 runs well mid-range and the dropped #1 rotor is happily firing away.=A0 I= =20 still have some tuning to do, but after adjusting Mode 4, I can now move= =20 forward with that.=A0=A0
=A0
To date I have tried the following:
=A0 1.=A0 Performed a compression check - OK
=A0 2.=A0 Swapped primary injector with #3 - no change
=A0 3.=A0 Swapped coils with #3 - no change
=A0 4.=A0 Replaced spark plugs - no change, except initially it ran= =20 better until the plug fouled
=A0 5.=A0 Checked plug wires with ohm meter - checked good
=A0 6.=A0 Sent EC-2 to Tracy for latest s/w and checkout - no=20 abnormalities found, latest s/w installed
=A0 7.=A0 Checked secondary injectors for leakage - none seen
=A0
Can anyone suggest a reason why the #1 primary injector runs extreme= ly=20 rich when set to the factory default setting?=A0 Is this something to be= =20 concerned with?
=A0
Thanks,
Mark
=A0

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