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  #61  
Old 08-06-2018, 08:42 AM
Dustyone Dustyone is offline
 
Join Date: Oct 2012
Location: Brisbane,Austalia
Posts: 126
Default Mag-less

Hi Ivan,

Good Job ,
I am really enjoying the whole no mag story. One of the biggest gains in going with Dual CPI appears to be 'Cost of Operation' over time.

I'll be doing my annual when I return home from Canada and the only maintenance my ignition will require is a simple Aux battery test and replace the $4.00 spark plugs.
The labour content alone if I had to pay for it is significant.
-no Mag drives to inspect (mine had a spinning bearing )
-no timing to check
-no points to adjust

Did you also install the Dual Crank sensor ?
Are you planning to replace the Lightspeed at a later date ?

Mag failures in 1000 hrs seems to be the average of what I read about. (two is unlucky )
Do you mind sharing what happened to the Mags ?

Cheers,
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Ashley Miller
RV-10 #40597
Dual SDS CPI
http://www.vansairforce.com/communit...d.php?t=140051
Airflow Systems Air-Con
http://www.vansairforce.com/communit...4&postcount=15
VH-XTE 500hrs +
Redcliffe,Brisbane
Australia
Photos : https://goo.gl/photos/zsfBeVofHMe4ze7i7

Last edited by Dustyone : 08-06-2018 at 08:45 AM.
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  #62  
Old 08-07-2018, 05:58 PM
rv6ejguy's Avatar
rv6ejguy rv6ejguy is offline
 
Join Date: Mar 2005
Location: Calgary, Canada
Posts: 4,750
Default New Vid

Ralph and I ran an RV with a CPI installed this morning and shot some photos/ video to show the basics of setting the Magnet Position value and getting the timing correct.

I could not shoot with a tripod due to the prop blast so one part is a bit fuzzy but hopefully people will see the basics and find it helpful.

We'll do another more detailed video on Ralph's other plane later this month with the EM-5, which is set the same way as the CPI.

https://www.youtube.com/watch?v=6-7K...ature=youtu.be
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Ross Farnham, Calgary, Alberta
Turbo Subaru EJ22, SDS EFI, Marcotte M-300, IVO, RV6A C-GVZX flying from CYBW since 2003- 424.4 hrs. on the Hobbs,
RV10 95% built- Sold 2016
http://www.sdsefi.com/aircraft.html
http://sdsefi.com/cpi.htm


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  #63  
Old 08-08-2018, 03:22 PM
Ivan Kristensen's Avatar
Ivan Kristensen Ivan Kristensen is offline
 
Join Date: Mar 2008
Location: Guelph Ontario
Posts: 214
Default Mag failures.

Quote:
Originally Posted by Dustyone View Post
Hi Ivan,

Did you also install the Dual Crank sensor ?
I did not install a Dual Crank sensor, a decision I am sure I will regret should I decide to replace the LS EI with a second SDS CPI.

Quote:
Originally Posted by Dustyone View Post
Are you planning to replace the Lightspeed at a later date ?
At this point I do not plan to replace the LghtSpeed as it is working perfectly.
Quote:
Originally Posted by Dustyone View Post
Mag failures in 1000 hrs seems to be the average of what I read about. (two is unlucky )
So the first failure was at 671 hours on a return flight from Oshkosh. I didn't even realize that the mag had failed until two days later when I went to do the mag check before flight. The second failure came only 351 hour later on the new Mag.

Quote:
Originally Posted by Dustyone View Post
Do you mind sharing what happened to the Mags ?
Cheers,
The first one I believe an oil seal failed as it was full of oil. I don't know any more as it was turned in for a core credit and replace with a new one.

The second one had a coil fail plus it needed points and a cam.
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Ivan Kristensen
Guelph, ON. Canada
RV-10 (C-GMDV) 1140hrs.
Dual GRT 8.4" EFIS, TT A/P, Avidyne IFD440


Link to my build site:
https://ivankristensen.smugmug.com/B...ENTAL-aircraft
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  #64  
Old 08-21-2018, 04:05 PM
rv6ejguy's Avatar
rv6ejguy rv6ejguy is offline
 
Join Date: Mar 2005
Location: Calgary, Canada
Posts: 4,750
Default More Data

Ivan just completed a 1574NM flight and sent me this note:

"Just returned from my trip to Red Lake in NW'ern Ontario. The CPI performed perfectly, I did an in-flight EI check (aka a mag check) while running LOP and found a very small RPM drop and a bare perceptible note change in the engine when the LS was turned off.

Interestingly enough I found a very slight roughness in the engine when the CPI was turned off. However, in fairness I will have to say the the difference between the two EI's is very little.

As far as speed gain is concerned I may have gotten one or two kts. If I had changed from two mags then I might have seen a bigger gain but that was not what I was looking for nor did I expect it. The real gain here is, in my view, the reliability and a smooth running engine and I got both with the CPI.

So far I am very happy with this new addition to my RV-10."





Pretty good numbers. Note that Ivan is using one Lightspeed and one CPI.
__________________

Ross Farnham, Calgary, Alberta
Turbo Subaru EJ22, SDS EFI, Marcotte M-300, IVO, RV6A C-GVZX flying from CYBW since 2003- 424.4 hrs. on the Hobbs,
RV10 95% built- Sold 2016
http://www.sdsefi.com/aircraft.html
http://sdsefi.com/cpi.htm


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  #65  
Old 09-17-2018, 12:22 AM
RussellT RussellT is offline
 
Join Date: May 2016
Location: Albany Western Australia
Posts: 35
Default

Received my CPI ignition system including a flywheel (genuine work of art) along with the induction tube O ring flange kit from Ross today. Very impressed with the quality of parts and the service/communication from Ross and his company.
[IMG][/IMG][IMG][/IMG]
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RV 3B. Very slow build. At fwf & wiring..
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