Return-Path: Received: from [65.54.169.86] (HELO hotmail.com) by logan.com (CommuniGate Pro SMTP 4.1.1) with ESMTP id 2532019 for flyrotary@lancaironline.net; Mon, 18 Aug 2003 10:44:21 -0400 Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Mon, 18 Aug 2003 07:44:20 -0700 Received: from 67.24.246.183 by bay3-dav56.bay3.hotmail.com with DAV; Mon, 18 Aug 2003 14:44:20 +0000 X-Originating-IP: [67.24.246.183] X-Originating-Email: [lors01@msn.com] Reply-To: "Tracy Crook" From: "Tracy Crook" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: today's engine results- still no joy Date: Mon, 18 Aug 2003 10:46:12 -0400 Organization: Real World Solutions Inc. MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_005B_01C36575.F0E19340" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1158 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 Message-ID: X-OriginalArrivalTime: 18 Aug 2003 14:44:20.0762 (UTC) FILETIME=[3571BFA0:01C36597] This is a multi-part message in MIME format. ------=_NextPart_000_005B_01C36575.F0E19340 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MessageRusty, You've been getting some good advice on this so far. I agree that you = either have very mismatched flow rates on the primary & secondaries, OR = the cold start function is being actuated at unexpected times (pin 30 = being grounded) as Ed speculated. This would explain why disabling the = secondaries made a difference when running at low (12" ) MAP. You MUST = determine which of these is true before doing anything else. With your = background I'm sure you know the importance of eliminating each problem = befor proceeding to the next. =20 The EC2 can compensate for mismatched flow rates *within limits*. If = you have a choice, use the lower flow rate injectors as the primaries. = If there is too much spread in the flow rates, only matching them more = closely will fix the problem. Most importantly, Running all 4 injectors all the time is not an = answer and will result in serious hair loss in the future if attempted. Al, on the low MAP programming, it will help to initially set the MODE = 2 program width to maximum before making that first low map adjustment = in MODE 1. This will adjust a couple of steps below the actual running = MAP. Forgot to mention this the other day when we were talking about = it. Remember to set mode 2 back to minimum before making fine = adjustments after this. Tracy =20 ----- Original Message -----=20 From: Russell Duffy=20 To: Rotary motors in aircraft=20 Sent: Monday, August 18, 2003 9:52 AM Subject: [FlyRotary] Re: today's engine results- still no joy I had a problem with the engine dying after pulling the throttle back = when it went to a MAP pressure below where I was able to run and make = the big correction. This is influenced by the large primaries, but I = believe will be solved by going to a MAP referenced regulator.=20 This was all great info Al. Thanks a lot for the reply. The point = about creating artificially low, un-tunable MAPs by closing the throttle = is something I never thought about. Yep, that carb is looking better = all the time :-) Rusty (who hates carbs, and is just kidding about using one) ------=_NextPart_000_005B_01C36575.F0E19340 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message
Rusty,
You've been getting some good advice on = this so=20 far.  I agree that you either have very mismatched flow rates on = the=20 primary & secondaries, OR the cold start function is being actuated = at=20 unexpected times (pin 30 being grounded) as Ed speculated.   = This=20 would explain why disabling the secondaries made a difference when = running at=20 low (12" ) MAP.  You MUST determine which of these is true before = doing=20 anything else.  With your background I'm sure you know the = importance of=20 eliminating each problem befor proceeding to the next.
 
 The EC2 can compensate for = mismatched flow=20 rates *within limits*.  If you have a choice, use the lower flow = rate=20 injectors as the primaries.  If there is too much spread in the = flow rates,=20 only matching them more closely will fix the problem.
 
Most importantly,   Running = all 4=20 injectors all the time is not an answer and will result in serious = hair=20 loss in the future if attempted.
 
Al,  on the low MAP programming, = it will help=20 to initially set the MODE 2 program width to maximum before making = that=20 first low map adjustment in MODE 1.  This will adjust a couple of = steps=20 below the actual running MAP.  Forgot to mention this the = other day=20 when we were talking about it.   Remember to set mode = 2 back=20 to minimum before making fine adjustments after this.
 
Tracy
 
 
----- Original Message -----
From:=20 Russell=20 Duffy
Sent: Monday, August 18, 2003 = 9:52=20 AM
Subject: [FlyRotary] Re: = today's engine=20 results- still no joy

I had a problem with the engine dying after pulling = the throttle=20 back when it went to a MAP pressure below where I was able to run and = make the=20 big correction.  This is influenced by the large primaries, but I = believe=20 will be solved by going to a MAP referenced regulator. 
 
This was all great info = Al.  Thanks=20 a lot for the reply.  The point about creating artificially low,=20 un-tunable MAPs by closing the throttle is something I never = thought=20 about.  Yep, that carb is looking better all the time=20 :-)
 
Rusty (who hates carbs, and = is just=20 kidding about using one)
 

 

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