I actually emailed them last night to ask. Haven't heard from them yet, but I bet you're right.

On 6/3/2014 2:12 PM, Bobby J. Hughes wrote:

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]
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 <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