X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sun, 18 Dec 2011 09:30:01 -0500 Message-ID: X-Original-Return-Path: Received: from [69.146.254.18] (HELO exchange.arilabs.net) by logan.com (CommuniGate Pro SMTP 5.4.2) with ESMTPS id 5308131 for lml@lancaironline.net; Fri, 16 Dec 2011 17:10:38 -0500 Received-SPF: none receiver=logan.com; client-ip=69.146.254.18; envelope-from=kevin@arilabs.net Received: from exchange.arilabs.net ([10.100.100.1]) by exchange.arilabs.net ([10.100.100.1]) with mapi; Fri, 16 Dec 2011 15:10:00 -0700 From: Kevin Stallard X-Original-To: Lancair Mailing List X-Original-Date: Fri, 16 Dec 2011 15:09:59 -0700 Subject: RE: [LML] Electronic Ignition System Application Thread-Topic: [LML] Electronic Ignition System Application Thread-Index: Acy4zVBHvYAaYq9FT/CwQIKqS5WlYgDccSJw X-Original-Message-ID: <779FE3D761D7B741813E300858A248CF04E45069@exchange.arilabs.net> References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Amazing Brent, That is a very nice looking package. Congratulations. I look forward to t= heir availability. My engine is still fairly new and I don't think I need = an overhaul soon. So I guess I'll have to wait until testing is done. But= you can sign me up for these guys when you are ready to sell them. Kevin -----Original Message----- From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of Bren= t Regan Sent: Monday, December 12, 2011 5:52 AM To: lml@lancaironline.net Subject: [LML] Electronic Ignition System Application A while ago I was approached by Monty Barrett of BPA to develop and=20 ignition system for the 9 cylinder M14 radial engine. The magnetos for=20 these engines were out of production and unreliable. We applied our=20 experience designing certified aerospace electronics and came up with a=20 magneto replacement system with a Timing Controller that featured an=20 internal poly-phase alternator, manifold pressure sensor, independent=20 High-Q magnetic flux sensors and dual microprocessors with cascading=20 redundancy. Everything is packaged in a billet machined, O-ring sealed=20 MIL-Spec, water and dust proof anodized housing. The Timing Controller=20 is coupled to independent "Coil Near Plug" high energy Smart Coils that=20 deliver a measured 80+mJ of energy to the spark plasma. The entire=20 system is rated to 125 degrees C operating temperature (257 degF), 10G=20 sign-on-random vibration, direct and indirect lightning effects as well=20 as a host of other DO160F test requirements. While we were designing this system it occurred to me that I would like=20 a couple of these on my IV-P, so we designed it so it could accommodate=20 6 or 9 cylinder engines. The only difference being the internal sensor=20 ratio and firmware. The system components have passed qualification testing and the 9=20 cylinder system is currently on the BPA dynamometer undergoing=20 performance mapping and endurance testing. This is where we develop the=20 advance parameters for RPM and manifold pressure. It really isn't=20 practical to attempt to develop these advance curves without a dynamometer. Monty at BPA is currently booking orders for the 9 cylinder M14 system.=20 The problem with the 6 cylinder "market" is that there are many=20 variables and each significant variant of manufacturer, induction system=20 and compression ratio needs to be dynomometer qualified. So, to solve=20 this problem Monty will be offering a significant discount on the=20 ignition system to select 6 cylinder customers who have BPA perform=20 their overhaul and consent to having Monty performance map their engine=20 after the post overhaul dyanamometer run-in. The reason for the dyno testing is that it is not a good idea to just=20 make a guess at the correct timing based on RPM and manifold pressure=20 and then go fly. That would be like buying a suit out of a catalog. A=20 good outcome is unlikely. The attached picture shows the Timing Controller. It replaces the=20 magneto and contains the poly phase alternator, electronics and manifold=20 pressure sensor. The MIL-Spec connector is the interface to the=20 individual coils. The red cap covers the -4 JIC threaded fitting for the=20 manifold pressure connection. Under the blue cap are the firmware update=20 connector and integral static timing light. There is NO separate "Brain=20 Box" to deal with. The system is not available for 4 cylinder engines at this time. If you are interested, contact BPA http://www.bpaengines.com Regards Brent Regan