Return-Path: Received: from smtp012.mail.yahoo.com ([216.136.173.32] verified) by logan.com (CommuniGate Pro SMTP 4.3c3) with SMTP id 819965 for flyrotary@lancaironline.net; Fri, 25 Mar 2005 07:36:47 -0500 Received-SPF: none receiver=logan.com; client-ip=216.136.173.32; envelope-from=prvt_pilot@yahoo.com Received: from unknown (HELO stevehome) (prvt?pilot@24.136.242.117 with login) by smtp012.mail.yahoo.com with SMTP; 25 Mar 2005 12:32:49 -0000 Reply-To: From: "Steve Brooks" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] a better running rotary Date: Fri, 25 Mar 2005 07:35:02 -0500 Message-ID: <027e01c53137$119029b0$6401a8c0@workgroup.com> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_027F_01C5310D.28BA21B0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook CWS, Build 9.0.6604 (9.0.2911.0) X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1441 Importance: Normal In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_027F_01C5310D.28BA21B0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Paul, That was a really good find. It's amazing to me how on some of the most frustrating problems, it turns out to be something simple. Have fun flying now. Regards, Steve Brooks -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]On Behalf Of sqpilot@bellsouth.net Sent: Friday, March 25, 2005 12:58 PM To: Rotary motors in aircraft Subject: [FlyRotary] a better running rotary I went out to the airport today and ran the engine up, did a quick full power runup and then went to the runway and took off and landed (back on the same runway). Never ran better...matter of fact never ran this well. What, might we ask made the dramatic improvement? I call it reverse stupidity. A couple of days ago, I went to a page on my MicroTech ECU handheld programmer that I had not previously viewed. It showed rpm and water temp. My engine monitor showed a water temp of 160 degrees F. The ECU monitor showed a water temp of -24 degrees C. Not even close. To make a long story short, I had wired two monitors to one water temp sending unit. After running the engine, the ECU water temp climbed from -24C all the way up to -12C. I disconnected the wire that went to the engine monitor, and the ECU water temp immediately went up to 60C. Since the ECU varies fuel and timing based on water temperatures, it was unable to do it's job correctly with inaccurate water temp inputs. The cold start enrichment also was not functioning, as the engine map's were supposed to start reducing mixture levels after reaching 50 degrees C. It never saw those numbers, so it could not function properly. Now, with the proper water temp inputs, it runs GREAT !!! Cold start, warm up, idle through WOT is smooth as silk. To think of all the time I wasted trying to program injector open times, etc on an ECU that was receiving improper water temp information. I should have known better than to connect two monitors to one sending unit, but I did it anyway. Just hoping others can learn from my mistake instead of making their own. Just when I had a custom made mounting plate made for the HA-6 carburetor I just purchased, the thing has to go and run like a swiss watch. Murphy wins again. Take care. Paul Conner ------=_NextPart_000_027F_01C5310D.28BA21B0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Paul,

That=20 was a really good find. It's amazing to me how on some of the most = frustrating problems, it turns out to be something = simple.

Have=20 fun flying now.

Regards,

Steve=20 Brooks

-----Original Message-----
From: Rotary motors in = aircraft=20 [mailto:flyrotary@lancaironline.net]On Behalf Of=20 sqpilot@bellsouth.net
Sent: Friday, March 25, 2005 12:58 = PM
To: Rotary motors in aircraft
Subject: = [FlyRotary] a=20 better running rotary

I went out to the airport today and = ran the=20 engine up, did a quick full power runup and then went to the runway = and took=20 off and landed (back on the same runway). Never ran = better...matter of=20 fact never ran this well. What, might we ask made the dramatic=20 improvement? I call it reverse stupidity. A couple of days = ago, I=20 went to a page on my MicroTech ECU handheld programmer that I had not=20 previously viewed. It showed rpm and water temp. My engine monitor = showed a=20 water temp of 160 degrees F. The ECU monitor showed a water = temp of=20 -24 degrees C. Not even close. To make a long story short, I had wired = two=20 monitors to one water temp sending unit. After running the engine, the = ECU=20 water temp climbed from -24C all the way up to -12C. I = disconnected the=20 wire that went to the engine monitor, and the ECU water temp = immediately went=20 up to 60C. Since the ECU varies fuel and timing based on water=20 temperatures, it was unable to do it's job correctly with = inaccurate=20 water temp inputs. The cold start enrichment also was not = functioning,=20 as the engine map's were supposed to start reducing mixture levels = after=20 reaching 50 degrees C. It never saw those numbers, so it could = not=20 function properly. Now, with the proper water temp inputs, it = runs GREAT=20 !!! Cold start, warm up, idle through WOT is smooth as = silk. To=20 think of all the time I wasted trying to program injector open times, = etc on=20 an ECU that was receiving improper water temp = information.

I should = have known=20 better than to connect two monitors to one sending unit, but I did it = anyway.=20 Just hoping others can learn from my mistake instead of making their=20 own.

Just = when I had a=20 custom made mounting plate made for the HA-6 carburetor I just = purchased, the=20 thing has to go and run like a swiss watch. Murphy wins = again. =20 Take care. Paul Conner

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