X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from QMTA04.emeryville.ca.mail.comcast.net ([76.96.30.40] verified) by logan.com (CommuniGate Pro SMTP 5.2.8) with ESMTP id 3197249 for flyrotary@lancaironline.net; Thu, 02 Oct 2008 19:15:12 -0400 Received-SPF: pass receiver=logan.com; client-ip=76.96.30.40; envelope-from=wschertz@comcast.net Received: from OMTA04.emeryville.ca.mail.comcast.net ([76.96.30.35]) by QMTA04.emeryville.ca.mail.comcast.net with comcast id MvCN1a01f0lTkoCA4zEctD; Thu, 02 Oct 2008 23:14:36 +0000 Received: from WschertzPC ([71.57.77.95]) by OMTA04.emeryville.ca.mail.comcast.net with comcast id MzEa1a00823NHuF8QzEaZN; Thu, 02 Oct 2008 23:14:35 +0000 X-Authority-Analysis: v=1.0 c=1 a=ME02KCu2hg4A:10 a=LRLrDjWJ7TYA:10 a=k2FSMle7q6knufSwO_EA:9 a=ClgjxqOntztolKMr2DYA:7 a=JVApa5yCNCA-oXb5Bg1bLO-4h14A:4 a=si9q_4b84H0A:10 a=6-x43y6uxGMA:10 a=v4EuwreI-V_pbXR9pcUA:9 a=BbvOWqbStwXOLO61euQA:7 a=K5euz6IjJI_oaRSK-SeYUDhSt3sA:4 a=MSl-tDqOz04A:10 a=EzXvWhQp4_cA:10 a=AfD3MYMu9mQA:10 Message-ID: From: "Bill Schertz" To: "Rotary motors in aircraft" References: In-Reply-To: Subject: Re: [FlyRotary] Re: Question on EM-2 autotune Date: Thu, 2 Oct 2008 16:53:03 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_001C_01C924AF.55FCFE10" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Windows Mail 6.0.6000.16480 X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6000.16669 This is a multi-part message in MIME format. ------=_NextPart_000_001C_01C924AF.55FCFE10 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Not too many oak trees at my airport, so I have been tying it to my car. = I know what you mean about it skipping over the 'reduced manifold' = pressure, high rpm table values. Did you copy your A to B or leave it as = normal before your first flight? I pushed it to 5900 rpm today for a = short period, and it was trying to jump the chocks. maybe I need a less = stretchy rope. I did have it in track mode, and the map moved as I changed throttle = setting, but the actual reading on the bottom row of MAP is different = than the second row. The map address is the same. i.e. address 77, 16.5 = in the edit area, and 77, 17.4 in the EC-2 area. positions 64 67 would be in the idle setting (10 to 11.5" manifold = pressure) with rpm over 2800. I don't see how to get that on the ground, = too much prop load. Did I misinterpret? Bill Schertz KIS Cruiser #4045 N343BS ----- Original Message -----=20 From: Mark Steitle=20 To: Rotary motors in aircraft=20 Sent: Thursday, October 02, 2008 10:44 AM Subject: [FlyRotary] Re: Question on EM-2 autotune Bill,=20 Tie it to something solid, like a big oak tree. Personally, I find = that it is much easier to "auto-tune" in flight (at altitude), but don't = try it until you're very comfortable with the process and have a working = "B" controller in case things don't go as planned. This was the only = way I could get the EC-2 in the MAP address range that is in play when = preparing to land (abeam the numbers, turning base, and turning final. = As I recall, these were addresses 64 - 67. The EC-2 would skip over = these when I would try to tune this MAP range the ground. I simulated a = landing sequence while in auto-tune and was able to fix the tuning for = these addresses. Unless you can afford some time on a dyno, "tie it to = a big tree" is the best advice I can offer. Mark S. 87 hrs =20 On Thu, Oct 2, 2008 at 9:50 AM, Bill Schertz = wrote: Thanks Mark, I will check it again on the next engine run. By the way, it gets a little hairy as you go up in MP while the = aircraft is tied down. The prop really pulls hard. Bill Schertz KIS Cruiser #4045 N343BS ----- Original Message -----=20 From: Mark Steitle=20 To: Rotary motors in aircraft=20 Sent: Thursday, October 02, 2008 7:45 AM Subject: [FlyRotary] Re: Question on EM-2 autotune Bill,=20 If the MAP address moves up and down with manifold pressure = changes, then it is tracking. If you're not in track mode, the MAP = address being edited is determined by the UP and DOWN buttons. Don't = forget to put it in mode 9 to activate the Auto-Tune feature. As a side note, I had to set the program knob to about 3 o-clock = to get the tuning to come in to where I wanted it. At 12 o-clock it was = much too lean. Not sure why, but I'm sure that Tracy could enlighten = me.=20 Mark S. On Wed, Oct 1, 2008 at 9:25 PM, Bill Schertz = wrote: Question for those operating a EC-2/EM-2 combination that have = used track mode and autotune. According to my manual, to go into TRACK mode, 1. set mode 0 on EC2 2. Select EC2 MA{P table mode on EM2 (hold abort and pres ACK) = (this works) 3. Select TRACK mode (Hold UP button (1) and press DOWN (2), Verify that EM2 MAP is tracking engine -- This is where I have = a question. From my reading of the manual,=20 LINE 1 and 2 show the MAP location being edited, and in Track Mode, Line 3 and 4 show the actual location the engine is running at. My question is that line 1 and 3 show the same value, I.e. the = same location in the MAP table, but lines 2 and 4 are showing different = values for the manifold pressure. For example, MAP location 9 showed 14.5 on the line 2, and 16.0 on line 4. This makes me wonder whether the Track mode is operating = correctly. Any comments from those who have used this feature? Bill Schertz KIS Cruiser #4045 N343BS ------=_NextPart_000_001C_01C924AF.55FCFE10 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Not too many oak trees at my airport, = so I have=20 been tying it to my car. I know what you mean about it skipping over the = 'reduced manifold'  pressure, high rpm table values. Did you copy = your A to=20 B or leave it as normal before your first flight? I pushed it to 5900 = rpm today=20 for a short period, and it was trying to jump the chocks. maybe I need a = less=20 stretchy rope.
 
I did have it in track mode, and the = map moved as I=20 changed throttle setting, but the actual reading on the bottom row of = MAP is=20 different than the second row. The map address is the same.  i.e. = address=20 77, 16.5 in the edit area, and 77, 17.4 in the EC-2 area.
 
positions 64 67 would be in the idle = setting (10 to=20 11.5" manifold pressure) with rpm over 2800. I don't see how to get = that on=20 the ground, too much prop load. Did I misinterpret?
 
Bill Schertz
KIS Cruiser #4045
N343BS
----- Original Message -----
From:=20 Mark = Steitle=20
Sent: Thursday, October 02, = 2008 10:44=20 AM
Subject: [FlyRotary] Re: = Question on EM-2=20 autotune

Bill,
 
Tie it to something solid, like a big oak tree.  Personally, = I find that it is much easier to "auto-tune" in flight (at=20 altitude), but don't try it until you're very comfortable with the = process and=20 have a working "B" controller in case things don't go as=20 planned.  This was the only way I could get the EC-2 in the MAP = address=20 range that is in play when preparing to land (abeam the = numbers,=20 turning base, and turning final.  As I recall, these were = addresses 64 -=20 67.  The EC-2 would skip over these when I would try to = tune this MAP range the ground.  I simulated a = landing=20 sequence while in auto-tune and was able to fix = the tuning for=20 these addresses.  Unless you can afford some time on a=20 dyno, "tie it to a big tree" is the best advice I can=20 offer.
 
Mark S.
87 hrs   

On Thu, Oct 2, 2008 at 9:50 AM, Bill Schertz = <wschertz@comcast.net> = wrote:
Thanks Mark, I will check it again = on the next=20 engine run.
 
By the way, it gets a little hairy = as you go up=20 in MP while the aircraft is tied down. The prop really pulls=20 hard.
Bill Schertz
KIS Cruiser #4045
N343BS
----- Original Message ----- =
From: = Mark Steitle
To: Rotary = motors in=20 aircraft
Sent: Thursday, October 02, = 2008 7:45=20 AM
Subject: [FlyRotary] Re: = Question on=20 EM-2 autotune

Bill,
 
If the MAP address moves up and down with manifold pressure = changes,=20 then it is tracking.  If you're not in track mode, the MAP = address=20 being edited is determined by the UP and DOWN buttons.  = Don't=20 forget to put it in mode 9 to activate the Auto-Tune = feature.
 
As a side note, I had to set the program knob to about 3 = o-clock=20 to get the tuning to come in to where I wanted it.  At 12 = o-clock it=20 was much too lean.  Not sure why, but I'm sure that Tracy = could=20 enlighten me. 
 
Mark S.

On Wed, Oct 1, 2008 at 9:25 PM, Bill = Schertz <wschertz@comcast.net> wrote:
Question for those operating a EC-2/EM-2 combination that = have used=20 track mode and autotune.
 
According to my manual, to go into TRACK mode,
1. set mode 0 on EC2
2. Select EC2 MA{P table mode on EM2 (hold abort and pres = ACK)=20 (this works)
3. Select TRACK mode (Hold UP button (1) and press DOWN = (2),
 
Verify that EM2 MAP is tracking engine  -- This is = where I=20 have a question. From my reading of the manual,
LINE 1  and 2 show the MAP location being = edited,
and in Track Mode,
Line 3 and 4 show the actual location the engine is running = at.
 
My question is that line 1 and 3 show the same value, I.e. = the same=20 location in the MAP table, but lines 2 and 4 are showing = different=20 values for the manifold pressure. For example,
 
MAP location 9 showed 14.5 on the line 2, and 16.0 on line = 4.
 
This makes me wonder whether the Track mode is operating=20 correctly.
 
Any comments from those who have used this feature?
Bill Schertz
KIS Cruiser=20 = #4045
N343BS


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