From: "Charlie England" <flyrotary@lancaironline.net>
Received-SPF: pass
 receiver=logan.com; client-ip=209.85.213.172; envelope-from=ceengland7@gmail.com
Message-ID: <538E1E2D.2080006@gmail.com>
Date: Tue, 03 Jun 2014 14:12:45 -0500
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.5.0
MIME-Version: 1.0
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: controller, sensor, wiring questions
References: <list-6918027@logan.com>
In-Reply-To: <list-6918027@logan.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit

Very good. My search skills are obviously lacking. :-)

On 6/3/2014 1:22 PM, Bobby J. Hughes wrote:
> 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 <flyrotary@lancaironline.net> on
>> behalf of Charlie England <flyrotary@lancaironline.net>
>> 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;
>> 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
>> feed the EC2, that would be great. Do you have a link that describes
>> hooking one up to do both wide & narrow band?
>>
>> Thanks,
>>
>> Charlie
>> (BTW, I'm aware that the inrush current to the injectors is much
>> 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"
> <flyrotary@lancaironline.net> 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"
> <flyrotary@lancaironline.net> 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, &
>>>>> 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
>>>>> stable/accurate measurement? Both pin pairs 19/37 and pins 1/16 go
>>>>> 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
>>>>> switch pin 27 ( EC2 serial data in) between the two devices. Can
>>>>> 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,
>>>>> when on. Are true 10A DC rated switches needed for injector
>>>>> disable, or would lower current, AC rated switches do? A true 10 A
>>>>> DC rated switch is not that easy  to find (or afford...), and with
>>>>> the draw being effectively AC (high speed switching) and <2 A for
>>>>> 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
>>>>> connector? I can solder directly to the sensor, but I'd rather use
>>>>> 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