X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-ew0-f215.google.com ([209.85.219.215] verified) by logan.com (CommuniGate Pro SMTP 5.2.13) with ESMTP id 3592763 for flyrotary@lancaironline.net; Wed, 22 Apr 2009 09:46:52 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.219.215; envelope-from=msteitle@gmail.com Received: by ewy11 with SMTP id 11so3031229ewy.19 for ; Wed, 22 Apr 2009 06:46:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:message-id:subject:from:to:content-type; bh=qE6s0ddZjss+LXJFpvUuDHLI3V5Tw+dlZgz+uXzNUSY=; b=iY8c4rOSXppuQKbdoA9tDDvkEbilJigojhYFBwVJdOTWRo1cGiK/unvNY6vvY+bP32 FobvUvQULMHNNw52UjnesrwKTGc9rbb80YrfvHWys30H8eCyd/3Nbb+FvAR7sFmuiN5x K4AH/CMjD+FSNznH6utdg4p3Ld1ENmpLJHcbI= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; b=sv/sz40RAOHssY760r2usUl+sSD7kXY0JaTLA5UEJjui0PAzQoTOkGKm26qIcvwrTL BawKhSsdtFUWn/UdX9uuFcyLzpC39zoMW1Wel6HLkoWDMrSyt8K+hKAxWIJn9KilPsf+ hgnlUWldjoXTNyzHj9maW3/xMxSFsUVZeGQmM= MIME-Version: 1.0 Received: by 10.210.54.15 with SMTP id c15mr4463697eba.96.1240407973211; Wed, 22 Apr 2009 06:46:13 -0700 (PDT) In-Reply-To: References: Date: Wed, 22 Apr 2009 08:46:13 -0500 Message-ID: <5cf132c0904220646q67a10b19lb0907c9cd7daff75@mail.gmail.com> Subject: Re: [FlyRotary] Re: EC2 address range issue From: Mark Steitle To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=0015174beb3a9eacf6046824fccd --0015174beb3a9eacf6046824fccd Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Bobby, You may want to post your message on the EC-2/EM-2 list also. Mark On Wed, Apr 22, 2009 at 9:06 AM, Bobby J. Hughes wrote: > Bill, > > I tested moving the rpm / map threshold (mode 7A) from 2500 to > 3000,4000,2000 and 1200. I was still seeing a problem in this address range. > Not sure it was the same exact problem but same symptoms. Tune it richer one > time and then next time it need to be leaned. With the MAP at 12.5 and RPM > at 2270 I would expect to using address 26 or 27 not 37. Address range 32-63 > are for above 13" MAP and rpm between 2500 and 3800. 12.5" and 2270 rpm does > not meet that condition. But it is above 10" MAP. Is that a third condition? > > I had the same experience as you reported with mixture address gaps when > tuning. I skip from about 42 to 72 when slowly advancing the throttle one > address at a time. Advance the throttle quickly and the engine would miss > and cough. I set the skipped address range back to near 0 and can advance > the throttle quickly with little hesitation. I think it will need to be fine > tuned in flight. > > > Bobby > > ------------------------------ > *From:* Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] *On > Behalf Of *Bill Schertz > *Sent:* Tuesday, April 21, 2009 8:40 PM > *To:* Rotary motors in aircraft > *Subject:* [FlyRotary] Re: EC2 address range issue > > Bobby, > On my EC-2, the map table changes from low table to high table at 2400 rpm. > I don't have a super charger, and my EC-2 may not be the same model as > yours, as Tracy keeps making changes/improvements. > > You are seeing one reading at 3010 rpm and another at 2270, these span the > area where mine (according to manual) switches between low and high map > tables. > Bill Schertz > KIS Cruiser #4045 > N343BS > > ----- Original Message ----- > *From:* Bobby J. Hughes > *To:* Rotary motors in aircraft > *Sent:* Tuesday, April 21, 2009 8:20 PM > *Subject:* [FlyRotary] EC2 address range issue > > I sent an email to Tracy but he's at SNF this week and not sure he will see > it until next week. Though I would run this by the group. > > Mixture Correction Table address 32-41 are giving me problems. Here is an > example of what I am seeing. > > Address 37 , MAP 12.1, RPM 3010, Val +26, O2- 14.5 Tuned perfect. Move > the throttle up and down the map table and engine starts to run poor in > the address range. Adjust throttle back to Address 37 and things have > changed. > Address 37, MAP 12.5, RPM 2270, VAL +26, O2- 12.5 Tuned rich. > > I have tuned this range a dozen or more times. It also happens to be right > in my taxi range. > > Ground run settings. > > Prop in fixed mode at high rpm setting. > Supercharger 1" bypass open so no air is being compressed in manifold. > Prop and supercharger settings do not seem to make any difference with this > problem. > I played around with mode 7A changing the rpm vs manifold reference points > but did not seem to make a difference. > > I can idle at 10" MAP and 1200 rpm. > > > > Any ideas? > > Bobby Hughes > (last item before flight) > > > --0015174beb3a9eacf6046824fccd Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable
Bobby,
=A0
You may want to post your message on the EC-2/EM-2 list also.=A0
<= /div>
Mark

On Wed, Apr 22, 2009 at 9:06 AM, Bobby J. Hughes= <bhughes@qnsi.net= > wrote:
Bill,
=A0
I tested moving the rpm / map threshold (mode 7A) from 2500 to= 3000,4000,2000 and 1200. I was still seeing a problem in this address rang= e. Not sure it was the same exact problem but same symptoms. Tune it richer= one time and then next time it need to be leaned. With the MAP at 12.5 and= RPM at 2270 I would expect to using address 26 or 27 not 37. Address range= 32-63 are for above 13" MAP and rpm between 2500 and 3800. 12.5"= and 2270 rpm does not meet that condition. But it is above 10" MAP. I= s that=A0a third condition?
= =A0
I had the same= experience as you reported with mixture address gaps when tuning. I skip f= rom about 42 to 72 when slowly advancing the throttle one address at a time= . Advance the throttle quickly and the engine would miss and cough. I set t= he=A0skipped address range back to near 0 and can advance the throttle quic= kly with little hesitation. I think it will need to be fine tuned in flight= .
= =A0
= =A0
Bobby

From: Rotary motors in aircraft [ma= ilto:flyro= tary@lancaironline.net] On Behalf Of Bill Schertz
Sent: Tuesday, April 21, 2009 8:40 PM=20

To: Rotary motors in aircraft
Subj= ect: [FlyRotary] Re: EC2 address range issue

Bobby,
On my EC-2, the map table changes from= low table to high table at 2400 rpm. I don't have a super charger, and= my EC-2 may not be the same model as yours, as Tracy keeps making changes/= improvements.
=A0
You are seeing one reading at 3010 rpm= and another at 2270, these span the area where mine (according to manual) = switches between low and high map tables.
Bill Schertz
KIS Cruiser #4045
N343BS
----- Original Message -----
Sent: Tuesday, April 21, 2009 8:20 P= M
Subject: [FlyRotary] EC2 address ran= ge issue

I sent an email to Tracy but he&= #39;s at SNF=A0this week and not sure he will see it until next week. Thoug= h I would run this by the group.
=A0
Mixture Correction Table address= 32-41 are giving me problems.=A0Here is an example of what I am seeing.
=A0
Address 37=A0, MAP 12.1, RPM 301= 0, Val +26, O2- 14.5=A0 Tuned perfect. Move the throttle up and down the ma= p table and engine starts to run poor in the address range. Ad= just throttle back to Address 37 and things have changed.
Address 37,=A0 MAP 12.5, RPM 227= 0, VAL +26, O2- 12.5=A0 Tuned rich.
=A0
I have tuned this range a = dozen or more times. It also happens to be right in my taxi range. <= /span>
=A0
Ground run settings.
=A0
Prop in fixed mode at high= rpm setting.
Supercharger 1" bypas= s open=A0so no=A0air is being compressed in manifold.<= /div>
Prop and supercharger sett= ings do not seem to make any difference with this problem.
I played around with mode = 7A changing the rpm vs manifold reference points but did not seem to make a= difference.
=A0
I can idle at 10" MAP= and 1200 rpm.
=A0
=A0
=A0
Any ideas?
=A0
Bobby Hughes=
(last item before flight)<= /span>
=A0

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