X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fmailhost06.isp.att.net ([207.115.11.56] verified) by logan.com (CommuniGate Pro SMTP 5.3.10) with ESMTP id 4570373 for flyrotary@lancaironline.net; Sun, 07 Nov 2010 22:50:22 -0500 Received-SPF: none receiver=logan.com; client-ip=207.115.11.56; envelope-from=bbradburry@bellsouth.net Received: from desktop (adsl-85-148-241.mco.bellsouth.net[98.85.148.241]) by isp.att.net (frfwmhc06) with SMTP id <20101108034945H0600m34v6e>; Mon, 8 Nov 2010 03:49:45 +0000 X-Originating-IP: [98.85.148.241] From: "Bill Bradburry" To: "'Rotary motors in aircraft'" References: In-Reply-To: Subject: RE: [FlyRotary] Re: Adjust BELOW Observe ABOVE Date: Sun, 7 Nov 2010 22:49:45 -0500 Message-ID: <49743EC8D8A04CA3B661DB7ADB347EBF@Desktop> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0003_01CB7ECE.1394E940" X-Mailer: Microsoft Office Outlook 11 Thread-Index: Act92HFzpF0ZhuW5RVa+PUESGUnZFABHYsEQ X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6001.18049 This is a multi-part message in MIME format. ------=_NextPart_000_0003_01CB7ECE.1394E940 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit I had pretty good success today getting the surge out of the staging region. First, after Steve suggested it, I noticed that my staging was happening right at 3800 rpm, when the EC-2 is changing tables. So I raised the MP for the stage up an inch to get it away from this area. Then I used mode 6 to enrich the mixture after the stage. It took quite a bit of movement of the program knob to do it. I wound up with it set about 4 o'clock. Now the stage is smooth as I go back and forth across it. I then went back across the MAP table with mode 1 and smoothed it out. Now the mixture is pretty steady from idle to WOT. I think it may be just a hair rich across the range and will probably work it down some, but all in all pretty good results. Very cool day in the 60s. Nothing I did caused the temps to go above 180 or so water and 140 or so oil. The cowl is not on presently so it would have been hotter had it been on. I am leaving it off till I finish the tuning process. No leaks! Bill B _____ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Ed Anderson Sent: Saturday, November 06, 2010 1:30 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Adjust BELOW Observe ABOVE For what its worth, Bill - my adjustment (enriching) were all made to bins immediately after the staging jump. I had to adjust 3-4 bins, adjusting just one did not solve the problem Ed From: Bill Bradburry Sent: Saturday, November 06, 2010 12:58 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Adjust BELOW Observe ABOVE Ed, I was thinking of trying that. I couldn't figure out which bins are not correct. For example, in my case, the bins go from 43-44 to 47-48 when it jumps. So I didn't know if I should adjust the intervening bins (the ones it skips) or one or the other side of the jump. It seems that you adjusted the receiving bins?? Bill _____ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Ed Anderson Sent: Saturday, November 06, 2010 12:52 PM To: Rotary motors in aircraft Subject: [FlyRotary] Adjust BELOW Observe ABOVE Bill, if you don't like the idea of using Mode 6 because it may cause an adjustment of all bins above staging - here is an alternative suggestion based on the way I coped with the situation. As I mentioned my engine would also bog due to leaning during the staging process - being too lazy to read the manual and spot Mode 6 as a possible solution, I used the "brute force" method. I observed that when my engine staged my bin pointer would jump from the 30 some region to around 60. It was immediately after I observed the manifold pointer to make that jump - that the air/fuel ratio went lean and the engine bogged. So from the lean indication I was getting , I presume my engine was (for whatever reason) not getting adequate fuel in the bins around 60. So I started increasing the MAP values in bins 60-65 higher (enrichen) in incremental steps. I found that each adjustment richer in those bins caused the bog to become less severe giving me a comfortable feeling I was headed in the correct direction. Eventually the bog disappeared and my bin values above 65 were not affected because I did nothing to change those. You might want to try that method - but I would give Mode 6 another try by adjusting below staging and checking results above staging. Ed Edward L. Anderson Anderson Electronic Enterprises LLC 305 Reefton Road Weddington, NC 28104 http://www.andersonee.com http://www.eicommander.com ------=_NextPart_000_0003_01CB7ECE.1394E940 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

I had pretty good success today = getting the surge out of the staging region.   First, after Steve = suggested it, I noticed that my staging was happening right at 3800 rpm, when the = EC-2 is changing tables.  So I raised the MP for the stage up an inch to = get it away from this area.

Then I used mode 6 to enrich the = mixture after the stage.  It took quite a bit of movement of the program = knob to do it.  I wound up with it set about 4 o’clock.  Now the = stage is smooth as I go back and forth across it.

I then went back across the MAP = table with mode 1 and smoothed it out.  Now the mixture is pretty steady from = idle to WOT.  I think it may be just a hair rich across the range and will probably work it down some, but all in all pretty good = results.

Very cool day in the 60s.  = Nothing I did caused the temps to go above 180 or so water and 140 or so oil.  = The cowl is not on presently so it would have been hotter had it been on.  I = am leaving it off till I finish the tuning = process.

No = leaks!

Bill B =

 

From: = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Ed Anderson
Sent: Saturday, November = 06, 2010 1:30 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: = Adjust BELOW Observe ABOVE

 

For what its worth, Bill - my adjustment (enriching) = were all made to bins immediately after the staging jump.  I had to = adjust 3-4 bins, adjusting just one did not solve the = problem

 

Ed

 

Sent: Saturday, November 06, 2010 12:58 PM

Subject: [FlyRotary] Re: Adjust BELOW Observe ABOVE

 

Ed,

I was thinking of trying = that.  I couldn’t figure out which bins are not correct.  For example, = in my case, the bins go from 43-44 to 47-48 when it jumps.  So I = didn’t know if I should adjust the intervening bins (the ones it skips) or one = or the other side of the jump.

It seems that you adjusted the = receiving bins??

 

Bill

 

From: = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Ed Anderson
Sent: Saturday, November = 06, 2010 12:52 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] = Adjust BELOW Observe ABOVE

 

Bill, if you don't like the idea of using Mode 6 = because it may cause an adjustment of all bins above staging - here is an = alternative suggestion based on the way I coped with the = situation.

 

As I mentioned my engine would also bog due to = leaning during the staging process - being too lazy to read the manual and spot = Mode 6 as a possible solution, I used the "brute force" method.  = I observed that when my engine staged my bin pointer would jump from the = 30 some region to around 60.  It was immediately after I observed the = manifold pointer to make that jump - that the air/fuel ratio went lean and = the engine bogged.

 

So from the lean indication I was getting , I presume = my engine was (for whatever reason) not getting adequate fuel in the bins around 60.  So I started increasing the MAP values in bins 60-65  = higher (enrichen) in incremental steps.  I found that each adjustment = richer in those bins caused the bog to become less severe giving me a comfortable = feeling I was headed in the correct direction.  Eventually the bog = disappeared and my bin values above 65 were not affected because I did nothing to change = those.

 

You might want to try that method - but I would give = Mode 6 another try by adjusting below staging and checking results above = staging.

 

Ed

 

Edward L. Anderson
Anderson Electronic Enterprises LLC
305 Reefton = Road
Weddington, = NC 28104
http://www.andersonee.com
http://www.eicommander.com

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