X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from cdptpa-omtalb.mail.rr.com ([75.180.132.120] verified) by logan.com (CommuniGate Pro SMTP 5.4.5) with ESMTP id 5564699 for flyrotary@lancaironline.net; Mon, 28 May 2012 23:29:39 -0400 Received-SPF: pass receiver=logan.com; client-ip=75.180.132.120; envelope-from=eanderson@carolina.rr.com Return-Path: X-Authority-Analysis: v=2.0 cv=ReYS+iRv c=1 sm=0 a=g3L/TDsr+eNLfIieSKfGkw==:17 a=AHkS0RJitIMA:10 a=VbG-wGCyfUIA:10 a=05ChyHeVI94A:10 a=ayC55rCoAAAA:8 a=oCcaPWc0AAAA:8 a=cPIyiXsSRfwfvaFWuyQA:9 a=wPNLvfGTeEIA:10 a=pGLkceISAAAA:8 a=Ia-xEzejAAAA:8 a=mlbRtNySXVtxAlSNyAMA:9 a=_W_S_7VecoQA:10 a=MSl-tDqOz04A:10 a=EzXvWhQp4_cA:10 a=g3L/TDsr+eNLfIieSKfGkw==:117 X-Cloudmark-Score: 0 X-Originating-IP: 174.110.170.10 Received: from [174.110.170.10] ([174.110.170.10:59060] helo=EdPC) by cdptpa-oedge01.mail.rr.com (envelope-from ) (ecelerity 2.2.3.46 r()) with ESMTP id B4/F9-07741-F7244CF4; Tue, 29 May 2012 03:29:03 +0000 Message-ID: From: "Ed Anderson" To: "Rotary motors in aircraft" References: In-Reply-To: Subject: Re: [FlyRotary] Injector balancing Date: Mon, 28 May 2012 23:28:52 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_001F_01CD3D29.A4790340" X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 14.0.8117.416 X-MimeOLE: Produced By Microsoft MimeOLE V14.0.8117.416 This is a multi-part message in MIME format. ------=_NextPart_000_001F_01CD3D29.A4790340 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Mark, In addition, to what Steve suggested - What size are your fuel lines, = what fuel pressure do you normally see and is the number 1 primary = injector the first or the last position (from the pump input end) on = your fuel rail? Ed From: Mark Steitle=20 Sent: Monday, May 28, 2012 9:38 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 =20 No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2176 / Virus Database: 2425/5029 - Release Date: = 05/28/12 ------=_NextPart_000_001F_01CD3D29.A4790340 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Mark,
 
In addition, to what Steve suggested - What size = are your=20 fuel lines, what fuel pressure do you normally see and is the number 1 = primary=20 injector the first or the last position (from the pump input end) on = your fuel=20 rail?
 
Ed

Sent: Monday, May 28, 2012 9:38 PM
Subject: [FlyRotary] Injector balancing

I'm in a bit of a dilemma and thought I would put = this out=20 here for the group to 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 = injectors.=20  Primary injectors share a common fuel rail and are positioned = close to the=20 engine, between throttle plate and rotor face.  Secondary injectors = are=20 located ahead of the throttle plates.  As this is a p-port engine, = it has=20 three 1-bbl TB's, located very close to the engine.  Engine will = idle down=20 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=20 exhaust tone, a dark residue in the #1 exhaust port and dark spark plugs = on #1.=20  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
  

No virus found in this=20 message.
Checked by AVG - www.avg.com
Version: 2012.0.2176 / = Virus=20 Database: 2425/5029 - Release Date: 05/28/12

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