X-Virus-Scanned: clean according to Sophos on Logan.com From: "Steven W. Boese" Received: from [65.55.169.148] (HELO na01-bl2-obe.outbound.protection.outlook.com) by logan.com (CommuniGate Pro SMTP 6.1.8) with ESMTPS id 8355190 for flyrotary@lancaironline.net; Mon, 25 Jan 2016 17:10:55 -0500 Received-SPF: none receiver=logan.com; client-ip=65.55.169.148; envelope-from=SBoese@uwyo.edu DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=uwy.onmicrosoft.com; s=selector1-uwyo-edu; h=From:To:Date:Subject:Message-ID:Content-Type:MIME-Version; bh=5Fp+D2kJwdk+7YFLHskpN4OLH99GChX1ZqinzP6lzCc=; b=ItoiMPW/AcdldHWpcOB0fqN1CbTvwvL19FF4nXbuYzkhN1Xdbsi8V4U2JyddiFXIOtNCDGGQdCxINWPnSM6LNf2mtlXLMY8FvSHbnHTBIZoFBEqBQTMXch6GIey5rbwcCVxkF7EmzEVXvvGyOJdSAkzrMtPr2GNh9Komqmts08s= Received: from BLUPR0501MB2148.namprd05.prod.outlook.com (10.164.23.154) by BLUPR0501MB2145.namprd05.prod.outlook.com (10.164.23.151) with Microsoft SMTP Server (TLS) id 15.1.390.13; Mon, 25 Jan 2016 22:10:36 +0000 Received: from BLUPR0501MB2148.namprd05.prod.outlook.com ([10.164.23.154]) by BLUPR0501MB2148.namprd05.prod.outlook.com ([10.164.23.154]) with mapi id 15.01.0390.013; Mon, 25 Jan 2016 22:10:36 +0000 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: parts upgrade; was: What do you think may be happening? Thread-Topic: [FlyRotary] Re: parts upgrade; was: What do you think may be happening? Thread-Index: AQHRV7SXBmZn0Bz6nkWxdnTikZgM0Z8Mwu7G Date: Mon, 25 Jan 2016 22:10:35 +0000 Message-ID: References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: spf=none (sender IP is ) smtp.mailfrom=SBoese@uwyo.edu; x-originating-ip: [69.146.103.188] x-microsoft-exchange-diagnostics: 1;BLUPR0501MB2145;5:/8wkzJPaVU+N5Q6rhB7sdAwscH1kYwQLxP8ECeR27bHT7ZsUzKBO3IjI3sZ/8NCxVQv4a4oWYp2dDRzyUhS9GgrUIYHxSqNkSHOV7sE5u9JQTb94Bb6aH/5WnBhlVKkI1hXyHoa91KO1GOphrXonoQ==;24:IJ7b37fQ9sXwd1XT8C7JVpFes+BX01zPkGr2InKZWiiGxMj44moMR8Rgk3NYAVEbo/LrHnoMceef0ftZjkhEyDx8oq7TTIultUvYyxpBskk= x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:;SRVR:BLUPR0501MB2145; x-ms-office365-filtering-correlation-id: e557e7b5-1338-4f15-70a9-08d325d459df x-microsoft-antispam-prvs: x-exchange-antispam-report-test: UriScan:; x-exchange-antispam-report-cfa-test: BCL:0;PCL:0;RULEID:(123027)(601004)(2401047)(5005006)(520078)(8121501046)(10201501046)(3002001);SRVR:BLUPR0501MB2145;BCL:0;PCL:0;RULEID:;SRVR:BLUPR0501MB2145; x-forefront-prvs: 083289FD26 x-forefront-antispam-report: SFV:NSPM;SFS:(10019020)(6009001)(377454003)(189002)(199003)(76104003)(54356999)(5001960100002)(74316001)(19625215002)(2950100001)(3846002)(76576001)(77096005)(1096002)(110136002)(1220700001)(102836003)(107886002)(2900100001)(11100500001)(50986999)(105586002)(76176999)(5008740100001)(101416001)(5002640100001)(106356001)(586003)(106116001)(5003600100002)(33656002)(66066001)(16236675004)(89122001)(81156007)(97736004)(99286002)(80792005)(6116002)(189998001)(19580395003)(2906002)(19580405001)(87936001)(122556002)(90282001)(10400500002)(92566002)(3280700002)(450100001)(5004730100002)(19627405001)(88552002)(86362001)(40100003)(75432002);DIR:OUT;SFP:1102;SCL:1;SRVR:BLUPR0501MB2145;H:BLUPR0501MB2148.namprd05.prod.outlook.com;FPR:;SPF:None;PTR:InfoNoRecords;MX:1;A:1;LANG:en; received-spf: None (protection.outlook.com: uwyo.edu does not designate permitted sender hosts) spamdiagnosticoutput: 1:23 spamdiagnosticmetadata: NSPM Content-Type: multipart/alternative; boundary="_000_BLUPR0501MB2148E7885BD445868CEA1A06B9C70BLUPR0501MB2148_" MIME-Version: 1.0 X-OriginatorOrg: uwyo.edu X-MS-Exchange-CrossTenant-originalarrivaltime: 25 Jan 2016 22:10:35.9388 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: f9cdd7ad-825d-4601-8e9c-a325e02d52da X-MS-Exchange-Transport-CrossTenantHeadersStamped: BLUPR0501MB2145 --_000_BLUPR0501MB2148E7885BD445868CEA1A06B9C70BLUPR0501MB2148_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Bill, I agree that once a logic level ground is applied to EC2 pin 30, it shouldn= 't matter where that connection comes from or how many there are. It would be good to verify that I am understanding correctly the series of = events described below: "With the engine at idle, mixture at 14.7, disabling the secondary brings t= he mixture to about 13.0. If I turn both disables on, and then turn cold s= tart on, the mixture goes really rich around 10." The first sentence seems straightforward but troubling as stated previously= . In the second sentence, are you saying that beginning with the engine runni= ng normally with the injector disable switches both off (normal operating p= osition), you then turn both injector disable switches on? At this point d= oes the engine begin to die? If it does, this is normal. If you then turn= on the cold start switch before the engine stops, does the engine recover = and run very rich? If it does, then this is not normal and the cold start = switch is somehow supplying bus power to the injectors instead of supplying= a logic ground to the EC2 pin 30. This seems like quite a remote possibility, so I am probably not understand= ing your description correctly. I now have 8 minutes of flight time on my P51 type cooling scoop and revise= d exhaust system. Maybe a test flight to Texas is now in order? Steve Boese ________________________________ From: Rotary motors in aircraft on behalf of = Bill Bradburry Sent: Monday, January 25, 2016 2:07 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: parts upgrade; was: What do you think may be happe= ning? Steve, Ok, when you turn on the disable switches, they ground the pin 30 input on = the EC-2 to the case of the EC-2. When you turn on cold start, you ground = the pin 30 to the case. How the heck does the EC-2 know the difference so = that it can act differently??? Bill --_000_BLUPR0501MB2148E7885BD445868CEA1A06B9C70BLUPR0501MB2148_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Bill,


I agree that once a logic level ground is applied to EC2 pin 30, it= shouldn't matter where that connection comes from or how many there are.


It would be good to verify that I am understanding correctly the series = of events described below:


"With the= engine at idle, mixture at 14.7, disabling the secondary brings the mixtur= e to about 13.0.  If I turn both disables on, and then turn cold start on, the mixture goes really rich around 10."


The first sentence seems straightforward but troubling as stated previou= sly.


In the second sentence, are you saying that beginning with the engine ru= nning normally with the injector disable switches both off (normal operatin= g position), you then turn both injector disable switches on?  At this= point does the engine begin to die?  If it does, this is normal.  If you then turn on the cold start switc= h before the engine stops, does the engine recover and run very rich? = If it does, then this is not normal and the cold start switch is somehow s= upplying bus power to the injectors instead of supplying a logic ground to the EC2 pin 30.


This seems like quite a remote possibility, so I am probably not underst= anding your description correctly.


I now have 8 minutes of flight time on my P51 type cooling scoop and rev= ised exhaust system.  Maybe a test flight to Texas is now in order?


Steve Boese

   

From: Rotary motors in ai= rcraft <flyrotary@lancaironline.net> on behalf of Bill Bradburry <= flyrotary@lancaironline.net>
Sent: Monday, January 25, 2016 2:07 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: parts upgrade; was: What do you think may b= e happening?
 

Steve,

 

Ok, when you turn on the disable swit= ches, they ground the pin 30 input on the EC-2 to the case of the EC-2.&nbs= p; When you turn on cold start, you ground the pin 30 to the case.  How the heck does the EC-2 know the difference s= o that it can act differently???

 

Bill

=

--_000_BLUPR0501MB2148E7885BD445868CEA1A06B9C70BLUPR0501MB2148_--