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  #1  
Old 01-15-2021, 05:37 PM
Badia358 Badia358 is offline
 
Join Date: May 2009
Location: Mebane, NC
Posts: 57
Smile SDS CPI-2 Ignition

Just wanted to provide an update. I installed the SDS CPI-2 in my RV-6A (Lycoming O-360). Installation went well and all testing went very well. Engine is running great.

I also like to say a big THNAK YOU to Ross and Barry for their help during the selection and the installation process. Excellent customer support.

Thank you...
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  #2  
Old 01-15-2021, 07:10 PM
rjcthree's Avatar
rjcthree rjcthree is offline
 
Join Date: Jan 2007
Location: Bay Village, OH
Posts: 1,025
Default :)

I second that. Iíve been flying a CPi2 for a year now on an H2, and itís been great. Great support, although Iíve not needed any past my initial install.
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RV-9A N183RC/90432: tip-up, O320H2, Ellison, Dynon D180, CPi2, Sen GA, at KLPR
RV-8 83718, wing kit, tanks done, with a four year plus plan - on hold due to home move
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  #3  
Old 01-16-2021, 02:20 PM
Chkaharyer99 Chkaharyer99 is offline
 
Join Date: Oct 2011
Location: Pilot Hill, CA
Posts: 868
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My experience is similar. Been running the dual CPI-2 for just over a year now. Very happy with the performance. The low RPM idle is smooth. Starts easily when hot.

Ross and Barry are awesome.
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RV-8
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  #4  
Old 01-30-2021, 06:36 PM
Bill Boyd's Avatar
Bill Boyd Bill Boyd is offline
 
Join Date: Sep 2006
Location: Landing field "12VA"
Posts: 1,860
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Waiting to hear back from Ross - had to leave a VM today. I know he'll call, but here's my question:

Out flying the -10 today and realized I hadn't punched the Gauge button to bring up the timing advance display. I rarely look at it in flight, not really much to see. After I called up Gauge 1, I glimpsed a very brief flicker of the red FAULT LED. The engine never skipped a beat. That caught my attention, and I spent some time eyes-inside in cruise just looking at the SDS display to see if the FAULT light appeared again. Well, it did. Every 5-30 seconds randomly, it would flicker on for a brief flash, and I realized too that the SOURCE BATT red LED would illuminate for the same brief instant.

Since I wasn't sure if this was "normal" behavior that I had just never noted before (the SDS control panel is mounted very low in my panel and out of my scan), I set course for home and landed. I managed to get some cell phone video of the behavior. I noted it on the ground at idle just as in flight. The engine ran smoothly regardless. '

I checked the FAULT screen to see if it had logged anything, and it was null.

I wonder if this behavior has anything to do with the charging of the backup battery in flight. I have the latest software/firmware, as my system was factory-replaced a few months ago chasing an intermittent that ended up being a Hall sensor too far from the flywheel magnets. It is performing great, but this has spooked me just a little. Anyone else seeing a little pulsing of the FAULT LED on their CPi2?
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Hop-Along Aerodrome (12VA)
RV-6A - N30YD - Built '98 / sold '20
RV-10 - N130YD - 50 hours +
65 years running stock DNA
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  #5  
Old 01-30-2021, 07:35 PM
Chkaharyer99 Chkaharyer99 is offline
 
Join Date: Oct 2011
Location: Pilot Hill, CA
Posts: 868
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Bill,

Did you install the filter supplied by SDS?
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  #6  
Old 01-30-2021, 09:12 PM
Bill Boyd's Avatar
Bill Boyd Bill Boyd is offline
 
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Location: Landing field "12VA"
Posts: 1,860
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What is this filter you speak of?

Their website is not the easiest to navigate - give me the skinny if you please.
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Hop-Along Aerodrome (12VA)
RV-6A - N30YD - Built '98 / sold '20
RV-10 - N130YD - 50 hours +
65 years running stock DNA
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  #7  
Old 01-31-2021, 06:21 AM
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Toobuilder Toobuilder is offline
 
Join Date: Jul 2009
Location: Mojave
Posts: 4,928
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No experience with the -2, but a buddy had an intermittent flickering fault light on one of his legacy CPI units and it turned out to be a faulty toggle switch... Nothing wrong with the ignition at all - just unreliable power delivery.

Not sure what your system architecture looks like, but maybe consider a temporary hard wire around any CB, fuse or switch to see if the problem goes away, and of course check all grounds.
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WARNING! Incorrect design and/or fabrication of aircraft and/or components may result in injury or death. Information presented in this post is based on my own experience - Reader has sole responsibility for determining accuracy or suitability for use.

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  #8  
Old 01-31-2021, 07:21 AM
Bill Boyd's Avatar
Bill Boyd Bill Boyd is offline
 
Join Date: Sep 2006
Location: Landing field "12VA"
Posts: 1,860
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One of my first thoughts as well. If this is a power interruption, it's so brief I doubt anything but a 'scope would register it. No way my DVM would react that fast. I suppose I can first see if the fault occurs/registers when there is no RPM. If so, pretty simple to turn it on and start wiggling connectors until the behavior is replicated. If the engine has to be running to observe the issue, then trouble shooting just got an order of magnitude more difficult.

Still interested in this filter... suggests an issue may exist independent of my wiring, which I honestly think was done to airworthy standards. (I understand that physics cares nothing for what I believe about my wiring skills versus what really is)
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Hop-Along Aerodrome (12VA)
RV-6A - N30YD - Built '98 / sold '20
RV-10 - N130YD - 50 hours +
65 years running stock DNA
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  #9  
Old 01-31-2021, 05:47 PM
Chkaharyer99 Chkaharyer99 is offline
 
Join Date: Oct 2011
Location: Pilot Hill, CA
Posts: 868
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Quote:
Originally Posted by Bill Boyd View Post
One of my first thoughts as well. If this is a power interruption, it's so brief I doubt anything but a 'scope would register it. No way my DVM would react that fast. I suppose I can first see if the fault occurs/registers when there is no RPM. If so, pretty simple to turn it on and start wiggling connectors until the behavior is replicated. If the engine has to be running to observe the issue, then trouble shooting just got an order of magnitude more difficult.

Still interested in this filter... suggests an issue may exist independent of my wiring, which I honestly think was done to airworthy standards. (I understand that physics cares nothing for what I believe about my wiring skills versus what really is)
Bill,

I bought one of the first CPI2. I think serial number 3. SDS supplied me with a small exterior filter circuit that connected four wires (two black, two red) using available pins in their connector. As I recall the filter circuit helps with noise generated by the aircrafts charging system. IIRC That noise can trigger the more sensitive older CPI2 to throw a fault or blinking LEDS if the noise is loud enough and consistent enough. I have a photograph of the filter in my phone. It is identified as, “1000UF/50V Filter”. The filter is a small black plastic box with four wires. If your interested in seeing it send me a pm with your email and I will forward it.

When speaking with Barry about this last year I think he indicated newer systems would have the filter build into the unit. Mine is outside and piggybacks on the CPI2. Works great.
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Last edited by Chkaharyer99 : 01-31-2021 at 06:00 PM.
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  #10  
Old 02-01-2021, 06:01 AM
leok leok is offline
 
Join Date: Apr 2013
Location: Clarkston, MI
Posts: 433
Default get the filter

I had a similar issue with fault indications at random times. Barry sent me the filter and that took care of it.
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