X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-bk0-f52.google.com ([209.85.214.52] verified) by logan.com (CommuniGate Pro SMTP 5.4.5) with ESMTPS id 5565403 for flyrotary@lancaironline.net; Tue, 29 May 2012 09:15:03 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.214.52; envelope-from=msteitle@gmail.com Received: by bkcjc3 with SMTP id jc3so3052471bkc.25 for ; Tue, 29 May 2012 06:14:26 -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=ZP8fnKX7MS/446Aj71q5Rz599pjosd/j0GkC71AvjsE=; b=PXUy44c3su6mPWcKDdveu4kq31mTUkfKdRrOQFpAfsQXr49euUVSjNqElTbHpFcVvz U7BqlgaddhLXnP7rsEBsXbDdAfLfobvLk1dmzbKSd6ed0xEz4aFWDEiQ8LHSbnV1Z/hw dpkqvrp1Su+HywOIXFK0O+1tirxDo5Gpt7//2U7i4nT7AIGRzt9xkcB6MdGiN/I+pnIi GLh/FNs2QvvObAM5/ocHkdiWh2/X31UrjP86qFmvw91Vx/Tyu18NAxIBO6vls+gRS0+O pG79/E9N9bt230BY9IYZqSmJEczaUlrL6S+pWsUnO9TQLRCaq9KvZzxSkBV88X2iNTy1 Xrww== MIME-Version: 1.0 Received: by 10.205.120.17 with SMTP id fw17mr6093895bkc.20.1338297265835; Tue, 29 May 2012 06:14:25 -0700 (PDT) Received: by 10.204.97.194 with HTTP; Tue, 29 May 2012 06:14:25 -0700 (PDT) In-Reply-To: References: Date: Tue, 29 May 2012 08:14:25 -0500 Message-ID: Subject: Re: [FlyRotary] Re: Injector balancing From: Mark Steitle To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=000e0ce00480224d7f04c12c9d93 --000e0ce00480224d7f04c12c9d93 Content-Type: text/plain; charset=ISO-8859-1 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 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 > *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 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. > > 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 > --000e0ce00480224d7f04c12c9d93 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Bill,=A0

Since I do have a BMA EFIS-1 (for just a little= longer), this is a very real possibility. =A0I'll check this next week= end. =A0What value resistor did you install?

Thank= s,
Mark

On Mon, May 28, 2012 at 10:37 P= M, Bill Schertz <wschertz@comcast.net> wrote:
Mark,
Is rotor 1 connected to the tach signal line on the Blue Mountain? Whe= n 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.
=
=A0
Bill=20 Schertz
KIS Cruiser #4045
N343BS
Phase one testing Completed
=
=A0
Sent: Monday, May 28, 2012 8:38 PM
To: Rotary motors in aircraft <= /div>
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 t= o=20 ponder.=A0=A0=20
=A0
First, this is a p-ported 3-rotor, running RWS EC-2 and psru.=A0 I'= ;m=20 running 460cc Mazda primary injectors and 60lb Deka IV secondary=20 injectors.=A0 Primary injectors share a common fuel rail and are positioned= =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-port= =20 engine, it has three 1-bbl TB's, located very close to the engine.=A0 E= ngine=20 will idle down to 800 - 900 rpm, but I normally idle it around 1500 - 1600= =20 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, change = 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= 9;s by=20 adjusting Mode 4, but I had to go full CCW with the program knob to= =20 achieve this.=A0 (Mode 4 & 5 adjust similar to Mode 1)=A0 Now it runs= =20 well mid-range and the dropped #1 rotor is happily firing away.=A0 I still= =20 have some tuning to do, but after adjusting Mode 4, I can now move forward = with=20 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 extremely= rich=20 when set to the factory default setting?=A0 Is this something to be concern= ed=20 with?
=A0
Thanks,
Mark

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