X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from aspensprings.uwyo.edu ([129.72.10.32] verified) by logan.com (CommuniGate Pro SMTP 5.4.0) with ESMTPS id 5053472 for flyrotary@lancaironline.net; Sat, 16 Jul 2011 02:08:38 -0400 Received-SPF: none receiver=logan.com; client-ip=129.72.10.32; envelope-from=SBoese@uwyo.edu Received: from ponyexpress-ht4.uwyo.edu (extlb.uwyo.edu [172.26.4.4]) by aspensprings.uwyo.edu (8.14.4/8.14.4) with ESMTP id p6G67mEX024922 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL) for ; Sat, 16 Jul 2011 00:08:02 -0600 (MDT) (envelope-from SBoese@uwyo.edu) Received: from ponyexpress-m10.uwyo.edu ([fe80::60dd:cb9e:6f71:3d48]) by ponyexpress-ht4.uwyo.edu ([fe80::8de7:b225:a85b:d0ee%13]) with mapi id 14.01.0289.001; Sat, 16 Jul 2011 00:07:43 -0600 From: "Steven W. Boese" To: Rotary motors in aircraft Subject: RE: [FlyRotary] High speed stumble continues Thread-Topic: [FlyRotary] High speed stumble continues Thread-Index: AQHMQcypqdH6/0CiD0izMexE0buB05Tud1RD Date: Sat, 16 Jul 2011 06:07:43 +0000 Message-ID: <3E8191F276108F4481AB0721BBA9269E0581597C@ponyexpress-m10.uwyo.edu> References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [75.220.39.61] Content-Type: multipart/alternative; boundary="_000_3E8191F276108F4481AB0721BBA9269E0581597Cponyexpressm10u_" MIME-Version: 1.0 --_000_3E8191F276108F4481AB0721BBA9269E0581597Cponyexpressm10u_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Brian, My EC2's fire the leading and trailing plugs simultaneously. Have you trie= d disabling the leading or trailing coils when the problem is occurring? Since you are able to induce the problem on the ground, have you given any = thought to the offer of sending you the equipment to record the EC2's input= and output signals? This might indicate the nature of the problem and thu= s facilitate the development of a solution. Steve Boese RV6A, 1986 13B NA, RD1A, EC2 ________________________________ From: Rotary motors in aircraft [flyrotary@lancaironline.net] on behalf of = bktrub@aol.com [bktrub@aol.com] Sent: Wednesday, July 13, 2011 8:20 PM To: Rotary motors in aircraft Subject: [FlyRotary] High speed stumble continues I just installed the Magnecor wires, put on a smaller prop, re-routed the C= AS sensor wires to a location further away from the secondary igntion leads= , and ran up the engine. No joy- I still get lots of misfiring above 5200 R= PM. Wondering if the issue might be with my EC2. I still have questions about how my CAS is wired, on the 13BREW the CAS is = next to the trigger wheel, it consists of two hall effect sensors, one to c= ount every 30 degress,and one that counts every 360 degrees. The EC2 has th= ree wires going out to the CAS- one to provide voltage to both sensors, and= one wire each (#22 & #23 ) to read each sensor. My question is- is polar= ity a possible issue with hall effect sensors? Also, does the EC@ fire both leading and trailing plugs simultaneously? Brian Trubee Grounded until further notice --_000_3E8191F276108F4481AB0721BBA9269E0581597Cponyexpressm10u_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Brian,

My EC2's fire the leading and trailing p= lugs simultaneously. Have you tried disabling the leading or trailing= coils when the problem is occurring?

Since you are able to induce the problem= on the ground, have you given any thought to the offer of sending you the = equipment to record the EC2's input and output signals? This might in= dicate the nature of the problem and thus facilitate the development of a solution.

Steve Boese

RV6A, 1986 13B NA, RD1A, EC2

From: Rotary motors in aircraft [flyrotary= @lancaironline.net] on behalf of bktrub@aol.com [bktrub@aol.com]
Sent: Wednesday, July 13, 2011 8:20 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] High speed stumble continues

I just installed the Magnecor wires, put on a smaller prop, re-routed = the CAS sensor wires to a location further away from the secondary igntion = leads, and ran up the engine. No joy- I still get lots of misfiring above 5= 200 RPM. Wondering if the issue might be with my EC2.
I still have questions about how my CAS is wired, on the 13BREW the CAS is = next to the trigger wheel, it consists of two hall effect sensors, one to c= ount every 30 degress,and one that counts every 360 degrees. The EC2 has th= ree wires going out to the CAS- one to provide voltage to both sensors, and one wire each (#22 &= #23 ) to read each sensor. My question is- is polarity a possible is= sue with hall effect sensors?

Also, does the EC@ fire both leading and trailing plugs simultaneously= ?

Brian Trubee

Grounded until further notice

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