X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [129.116.87.142] (HELO MAIL01.austin.utexas.edu) by logan.com (CommuniGate Pro SMTP 5.0c2) with ESMTP id 716918 for flyrotary@lancaironline.net; Fri, 09 Sep 2005 15:12:27 -0400 Received-SPF: none receiver=logan.com; client-ip=129.116.87.142; envelope-from=mark.steitle@austin.utexas.edu X-MimeOLE: Produced By Microsoft Exchange V6.5.7226.0 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01C5B572.4E5BB10E" Subject: FW: [FlyRotary] Re: Overvoltage control Date: Fri, 9 Sep 2005 14:11:39 -0500 Message-ID: <87DBA06C9A5CB84B80439BA09D86E69E0267E74C@MAIL01.austin.utexas.edu> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: [FlyRotary] Re: Overvoltage control Thread-Index: AcW1aOv++nM8V34eQp61zGAmhOCiKwAAZNmAAAE9OIAAADTNcAAAY2Gg From: "Mark R Steitle" To: "Rotary motors in aircraft" This is a multi-part message in MIME format. ------_=_NextPart_001_01C5B572.4E5BB10E Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable =20 =20 ________________________________ From: Mark R Steitle=20 Sent: Friday, September 09, 2005 2:02 PM To: 'Rotary motors in aircraft' Subject: FW: [FlyRotary] Re: Overvoltage control=20 =20 =20 Bill, It is the Z-14 schematic from Bob Nuckolls book The Aero Electric Connection. See www.aeroelectric.com/articles/Rev11/AppZ_R11C.pdf Print out the two halves of Z-14 and tape them together and it will make a lot more sense. It uses three contactors, a main battery contactor, an aux. battery contactor, and a crossfeed contactor. Each is controlled from an S700-2-10 OFF/ON/ON switch on the panel. What is neat is that the same switch that operates the contactor also operates the respective alternator field lead. This saves space on the panel. There is a third S700-2-5 ON/OFF/(ON) switch that operates the x-feed contactor (down position) as well as the starter contactor (up position), saving more panel space. Credit for the design goes to Bob Nuckolls. =20 =20 Mark =20 =20 =20 ------_=_NextPart_001_01C5B572.4E5BB10E Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

 

 

From: Mark = R Steitle
Sent: Friday, September = 09, 2005 2:02 PM
To: 'Rotary motors in aircraft'
Subject: FW: [FlyRotary] = Re: Overvoltage control

 

 

Bill,

It is the Z-14 schematic from Bob = Nuckolls book The Aero Electric Connection.  See www.aer= oelectric.com/articles/Rev11/AppZ_R11C.pdf  Print out the two halves of Z-14 and tape them together and it = will make a lot more sense.  It uses three contactors, a main battery = contactor, an aux. battery contactor, and a crossfeed contactor.  Each is = controlled from an S700-2-10 OFF/ON/ON switch on the panel.  What is neat is = that the same switch that operates the contactor also operates the respective = alternator field lead.   This saves space on the panel.  There is a = third S700-2-5 ON/OFF/(ON) switch that operates the x-feed contactor (down = position) as well as the starter contactor (up position), saving more panel space.  Credit for the design goes to Bob Nuckolls.  =

 

Mark

 

 

 

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