X-Virus-Scanned: clean according to Sophos on Logan.com From: "Bobby J. Hughes" Received: from webmail.qnsi.net ([66.219.56.245] verified) by logan.com (CommuniGate Pro SMTP 6.0.9e) with ESMTP id 6918119 for flyrotary@lancaironline.net; Tue, 03 Jun 2014 15:12:44 -0400 Received-SPF: none receiver=logan.com; client-ip=66.219.56.245; envelope-from=bhughes@qnsi.net X-MimeOLE: Produced By Microsoft Exchange V6.5 Content-class: urn:content-classes:message Return-Receipt-To: "Bobby J. Hughes" MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Disposition-Notification-To: "Bobby J. Hughes" Subject: RE: [FlyRotary] Re: controller, sensor, wiring questions Date: Tue, 3 Jun 2014 14:12:11 -0500 Message-ID: <74120FDE88CAFE4DBDA8814BCE20A3F36894B4@qnsi-mail.qnsi.net> In-Reply-To: X-MS-Has-Attach: X-MS-TNEF-Correlator: thread-topic: [FlyRotary] Re: controller, sensor, wiring questions thread-index: Ac9/WPJ+7MBiJz2FRAWKJBWmFRwlnwABmSXw References: To: "Rotary motors in aircraft" Charlie, That source is from down under. I'll bet this company can identify and provide the correct connector. http://www.bmotorsports.com/shop/index.php/cPath/109_110/page/1/sort/5d Bobby -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]=20 Sent: Tuesday, June 03, 2014 2:23 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: controller, sensor, wiring questions Charlie, This may work for your CAS. http://www.efihardware.com/products/2209/Mazda-RX7-FD-Crank-Angle-Sensor -Plug-Grey Bobby -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] Sent: Tuesday, June 03, 2014 1:40 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: controller, sensor, wiring questions Thanks, Steve. That's good news on the sensor. I've got the DPDT switch for the data lines, but was hoping I could feed the 'data out' to both devices all the time so I could monitor & data log at the same time. Not a big deal, though. Good news on the CAS connector, too, as I've been unable to find a purpose-built connector for it. My '04 era sensors are 4 wire, as well. Looks like Bobby's recommendation is a 5 wire. I'll pursue that avenue since I need an O2 monitor, anyway. I think I've found an option for the injector switches. If I use a 3PDT switch, I can split the injector loads so I have only one injector per pole in the switch. Five amp DC switches are easy to get, and affordable. I appreciate the help. Thanks to Bobby and Ed, also. Charlie On 6/3/2014 11:36 AM, Steven W. Boese wrote: > Charlie, > > I have connected two devices to a narrow band O2 sensor in addition to the EC2 with good results. The devices have to have high input impedance. > > I don't have an EM device, but others have connected both the data in and out lines to the EC2/3 to the serial converter for the data logging and observation and Ed's EFISM with a double pole double throw switch. Only one of the systems can be used at a given time. > > For the CAS, I used the same connector as for the fuel injectors. It required the pins in the CAS to be bent into a slight offset. The arrangement has been working for the two CAS on my test stand for some time now without any problems. > > The exhaust manifold O2 sensor on my 2009+ Renesis is a four wire wide band sensor which uses a different control system than the aftermarket wideband sensors I've seen. The O2 sensor further downstream is a narrow band sensor. The pre-2009 Renesis may be different, though. > > Using switches with excess current capability for the fuel injectors doesn't seem to be a bad idea. Dennis probably can give you some direct feedback on this. > > Steve Boese > RV6A, 1986 13B NA, RD1A, EC2 > ________________________________________ > From: Rotary motors in aircraft on=20 > behalf of Charlie England > Sent: Tuesday, June 03, 2014 7:50 AM > To: Rotary motors in aircraft > Subject: [FlyRotary] Re: controller, sensor, wiring questions > > I've got two sensors off RX-8 exhaust manifolds, so money shouldn't be > an issue. However, apparently on the EC3 supports wide band sensors;=20 > the latest EC2 will do auto tune with a narrow band sensor but doesn't > support wideband. > > If I can use the RX-8 sensor & it will still work as a narrow band to=20 > feed the EC2, that would be great. Do you have a link that describes=20 > hooking one up to do both wide & narrow band? > > Thanks, > > Charlie > (BTW, I'm aware that the inrush current to the injectors is much=20 > higher than steady state, but I'd think that it would be of incredibly > short duration, so average load on the contacts should be very low.) > > On 6/3/2014 7:43 AM, Bobby J. Hughes wrote: >> Also most wide ands also have a narrow band output for other devices. >> >> Bobby >> >> Sent from my iPhone >> >>> On Jun 3, 2014, at 7:39 AM, "Bobby J. Hughes" wrote: >>> >>> I think Tracy's latest upgrade support wideband o2 auto tune without the EM. Skip the narrowband and save some fuel $ during tuning. Your fuel savings will more than pay for the wideband and it's more useful in flight. >>> >>> Bobby Hughes >>> Sent from my iPhone >>> >>>> On Jun 3, 2014, at 6:12 AM, "Ed Anderson" wrote: >>>> >>>> Charlie, I'm a bit behind the times on Tracy's EC2 - but, last I knew it did not have an auto tune feature (my info could easily be out of date), plus it was my understanding that the auto tune feature required the EM2/3 as well as the EC. >>>> >>>> For best results the EFISM should be grounded to the aircraft electrical ground rather than to a ground pin on some other accessory. It should not really make a difference, but closer to the battery negative lead the better in my opinion. Current thought seems to be not to use aircraft chassis as a primary electrical ground. >>>> >>>> PS Don't' forget to bring the EFISM with you. >>>> >>>> Ed >>>> >>>> -----Original Message----- From: Charlie England >>>> Sent: Monday, June 02, 2014 9:11 PM >>>> To: Rotary motors in aircraft >>>> Subject: [FlyRotary] controller, sensor, wiring questions >>>> >>>> Currently building the wiring harness for the engine/controller, &=20 >>>> have a few questions. >>>> >>>> 1st, is anyone running multiple devices that need to see the 1-wire >>>> O-2 sensor? I need to feed both the EC2 (for auto-tune) and Ed A's monitor. >>>> Will there be a conflict if both are connected to the sensor at the >>>> same time? >>>> >>>> 1a (for Ed A), does your monitor care where it's grounded, for=20 >>>> stable/accurate measurement? Both pin pairs 19/37 and pins 1/16 go=20 >>>> to chassis ground, but the pairs are not common to each other in the EC2. >>>> Should it go direct to chassis, or to one or the other of the ground pairs? >>>> >>>> 2nd, I'd like to include Steve Boese's Rotary Copilot running on an >>>> iPaq, for data logging. I'm fairly confident that I'll need to=20 >>>> switch pin 27 ( EC2 serial data in) between the two devices. Can=20 >>>> pin 7 (EC2 serial data out) feed both devices at once, or should it >>>> be switched, as well? >>>> >>>> 3rd, the high impedance injectors seem to draw less than 1 A each,=20 >>>> when on. Are true 10A DC rated switches needed for injector=20 >>>> disable, or would lower current, AC rated switches do? A true 10 A=20 >>>> DC rated switch is not that easy to find (or afford...), and with=20 >>>> the draw being effectively AC (high speed switching) and <2 A for=20 >>>> primary pair and secondary pair, it would seem that a 5A DC rated switch should get the job done safely. >>>> >>>> 4th, anyone have a source for the RX-8 crank angle sensor=20 >>>> connector? I can solder directly to the sensor, but I'd rather use=20 >>>> proper connectors, if possible. >>>> >>>> Thanks, >>>> >>>> Charlie >>>> > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html