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  #81  
Old 12-02-2019, 08:38 PM
rv6ejguy's Avatar
rv6ejguy rv6ejguy is offline
 
Join Date: Mar 2005
Location: Calgary, Canada
Posts: 5,441
Default Lean Warning Settings

Something that has cropped up a few times recently that has confused some aviation customers using wideband O2 sensors hooked to the grey wire for AFR display into the programmer- When they are leaning, suddenly the AFR goes very rich and they get an O2 Error.

There are a couple settings in the programmer- Lean Warning and Lean Warning + Add Fuel. When the latter is turned on, the ECU automatically adds about 25% more fuel when it detects the AFR going leaner than 14 to 1 for more than a few seconds to protect the engine.

In aircraft applications where you'll be running near or lean of peak, these settings should probably be turned off to avoid both the warning and especially having the ECU intervene.

Hope this helps some folks who are wondering what is happening here.
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Ross Farnham, Calgary, Alberta
Turbo Subaru EJ22, SDS EFI, Marcotte M-300, IVO, Shorai- RV6A C-GVZX flying from CYBW since 2003- 436.1 hrs. on the Hobbs,
RV10 95% built- Sold 2016
http://www.sdsefi.com/aircraft.html
http://sdsefi.com/cpi2.htm


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  #82  
Old 12-05-2019, 02:05 PM
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rv6ejguy rv6ejguy is offline
 
Join Date: Mar 2005
Location: Calgary, Canada
Posts: 5,441
Default December

We've received a lot of CPI-2 and EM-5 orders this week, so much so that we're fully booked on these items until the end of 2019. Thanks to the many folks here on VAF for their orders. We really do appreciate it. It's been our best year since 2006 and we're plowing a lot of that capital back into developing the new EM-6 items and projects like the Rotax 912 kits for introduction in 2020.

As far as billet parts go, we have pretty good stock on intake flange kits and PV valve covers currently. A bunch more flywheels should be off the lathe by tomorrow. We can still fulfill orders for these items this month.
__________________

Ross Farnham, Calgary, Alberta
Turbo Subaru EJ22, SDS EFI, Marcotte M-300, IVO, Shorai- RV6A C-GVZX flying from CYBW since 2003- 436.1 hrs. on the Hobbs,
RV10 95% built- Sold 2016
http://www.sdsefi.com/aircraft.html
http://sdsefi.com/cpi2.htm


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  #83  
Old 12-08-2019, 04:47 PM
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rv6ejguy rv6ejguy is offline
 
Join Date: Mar 2005
Location: Calgary, Canada
Posts: 5,441
Default Rev Limiting

I've heard of a few prop governor problems over the last year or so. In the case of over rev protection, SDS CPI, CPI-2 and EM-5 can all be set to limit maximum rpm. We recommend you set the limit to around 100 over the max you want the engine to go.

On CPI and CPI-2, the window is called Rev Limit or Limiter.

On EM-5s, it's called Fuel Cut/RPM.
__________________

Ross Farnham, Calgary, Alberta
Turbo Subaru EJ22, SDS EFI, Marcotte M-300, IVO, Shorai- RV6A C-GVZX flying from CYBW since 2003- 436.1 hrs. on the Hobbs,
RV10 95% built- Sold 2016
http://www.sdsefi.com/aircraft.html
http://sdsefi.com/cpi2.htm


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