X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [64.4.51.77] (HELO hotmail.com) by logan.com (CommuniGate Pro SMTP 4.3.6) with ESMTP id 610296 for flyrotary@lancaironline.net; Thu, 21 Jul 2005 10:48:09 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.4.51.77; envelope-from=lors01@msn.com Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Thu, 21 Jul 2005 07:47:24 -0700 Message-ID: Received: from 64.4.51.220 by BAY107-DAV5.phx.gbl with DAV; Thu, 21 Jul 2005 14:47:24 +0000 X-Originating-IP: [64.4.51.220] X-Originating-Email: [lors01@msn.com] X-Sender: lors01@msn.com From: "Tracy Crook" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Tracy's Coil Order Date: Thu, 21 Jul 2005 10:47:20 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_00C3_01C58DE1.92287490" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: MSN 9 X-MIMEOLE: Produced By MSN MimeOLE V9.10.0011.1703 Seal-Send-Time: Thu, 21 Jul 2005 10:47:20 -0400 X-OriginalArrivalTime: 21 Jul 2005 14:47:24.0942 (UTC) FILETIME=[1B9FA2E0:01C58E03] This is a multi-part message in MIME format. ------=_NextPart_000_00C3_01C58DE1.92287490 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Bill, Most modern ignition systems are migrating to an integral = coil/igniter module rather than a separate igniter near the coil or in = the ECU. The igniter refers to the module that switches the high = current on and off to charge & fire the coil. This was the job done by = points and capacitors back in the dark ages. =20 The LS-1 and the Renesis have the igniter built as a single module. The = ECU just sends a logic level signal to the igniter to tell it to turn on = & off. This is the reason I keep having to say "no" to builders who = ask me if they can use these really nifty "insert brand here" coils they = have laying around the shop. Tracy (going down to hangar to test new coil & razor sharp wingtips) Subject: [FlyRotary] Re: Tracy's Coil Order =20 Santa just arrived in a big brown truck, got my coils. I ordered from = Rockauto.com. Not super fast but dependable and fair pricing. =20 It was my fault for not having a spare on hand - dumb. Never had an = actual coil/igniter failure before if you don't count the ballast = resistor failure on my early 2nd gen installation. They are generally = very reliable. I'm wondering if I have them located in a 'too hot' = location. I used a blast tube on the 2nd gen coils but thought that I = was being too conservative so deleted that on the Renesis installation. = May have been a mistake. =20 Tracy (installing temperature probe near coils to measure temp = in-flight) Tracy, Pardon my ignorance but what is the ignitor? The coil I = understand, is it a capacitor or other device? Bill Jepson ------=_NextPart_000_00C3_01C58DE1.92287490 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Bill, Most modern ignition systems are migrating to an integral=20 coil/igniter module rather than a separate igniter near the coil or in = the=20 ECU. The igniter refers to the module that switches the high = current on=20 and off to charge & fire the coil. This was the job done by = points and=20 capacitors back in the dark ages.

The LS-1 and the Renesis have the igniter built as a single = module. =20 The ECU just sends a logic level signal to the igniter to tell it to = turn on=20 & off. This is the reason I keep having to say "no" to = builders=20 who ask me if they can use these really nifty "insert brand here" coils = they=20 have laying around the shop.

Tracy (going down to hangar to test new coil & razor = sharp=20 wingtips)

Subject: [FlyRotary] Re: = Tracy's Coil=20 Order

=20
Santa just arrived in a big brown truck, got my coils. I = ordered=20 from Rockauto.com. Not super fast but dependable and fair=20 pricing.

It was my fault for not having a spare on hand - dumb. = Never had an=20 actual coil/igniter failure before if you don't count the ballast = resistor=20 failure on my early 2nd gen installation. They are generally = very=20 reliable. I'm wondering if I have them located in a 'too hot'=20 location. I used a blast tube on the 2nd gen coils but thought = that I=20 was being too conservative so deleted that on the Renesis = installation. =20 May have been a mistake.

Tracy (installing temperature probe near coils to measure = temp=20 in-flight)

Tracy, Pardon my ignorance but what is the ignitor? The coil I=20 understand, is it a capacitor or other device?

Bill = Jepson

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