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  #31  
Old 09-18-2022, 09:57 PM
rv6ejguy's Avatar
rv6ejguy rv6ejguy is offline
 
Join Date: Mar 2005
Location: Calgary, Canada
Posts: 6,449
Default Reno SDS User Update

Lee Ulrich (RV-7) took first place in the Sport Medallion race today at Reno and Tim Slater in his Rocket took 3rd. Congrats guys!

The fast guys in Sport Class Gold apparently all had problems shortly into the race so we didn't get to see what could have been a great competition there.
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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- 462.1 hrs. on the Hobbs,
RV10 95% built- Sold 2016
http://www.sdsefi.com/aircraft.html
https://www.youtube.com/channel/UCiy...g2GvQfelECCGoQ


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  #32  
Old 09-18-2022, 10:19 PM
scsmith scsmith is offline
 
Join Date: Jan 2008
Location: Ashland, OR
Posts: 3,372
Default

Quote:
Originally Posted by rv6ejguy View Post
Lee Ulrich (RV-7) took first place in the Sport Medallion race today at Reno and Tim Slater in his Rocket took 3rd. Congrats guys!

The fast guys in Sport Class Gold apparently all had problems shortly into the race so we didn't get to see what could have been a great competition there.
Yes, bummer that Jeff, Andy, and Jim all had to pull up and out. But a huge congratulations to Mathias Haid, who won in his Thunder Mustang. While it is less satisfying to win by having the really fast guys drop out, Mathias did run one of, if not the, fastest races he has ever flown. So - well done!

(Sorry, I think the Falconner V-12 in the TM uses a Motec
ECU, and would probably be better with SDS, but still, congrats are in order!)
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Steve Smith
Aeronautical Engineer
RV-8 N825RV
IO-360 A1A
WW 200RV
"The Magic Carpet" Flying since Sept. 2009
Hobbs 725
also
1/4 share in 1959 C-182B (tow plane)
LS6-15/18W sailplane SOLD
bought my old LS6-A back!!
VAF donation Dec 2022

Last edited by scsmith : 09-18-2022 at 10:34 PM.
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  #33  
Old 09-28-2022, 10:08 AM
rv6ejguy's Avatar
rv6ejguy rv6ejguy is offline
 
Join Date: Mar 2005
Location: Calgary, Canada
Posts: 6,449
Default RV-14A Vid

Put this up last night: https://youtu.be/Cl2QlJwBoPY

Many thanks to Ivan Kristensen for dropping in and making this video possible.

Was my first trip in a -14. Van's did a great job on the design and Ivan built a very clean plane.
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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- 462.1 hrs. on the Hobbs,
RV10 95% built- Sold 2016
http://www.sdsefi.com/aircraft.html
https://www.youtube.com/channel/UCiy...g2GvQfelECCGoQ


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  #34  
Old 10-21-2022, 08:59 PM
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rv6ejguy rv6ejguy is offline
 
Join Date: Mar 2005
Location: Calgary, Canada
Posts: 6,449
Default EM-6 Milestone

Today we received our first 2 proto ECU boards from Oregon. Barry will try to get it populated over the next few days and bench testing will begin immediately followed by testing in the car and then in the RV-6.

Anyway, we're pretty excited to finally be at this stage. It's been a long, hard journey writing code for the new features.

We've stockpiled a lot of chips over the last 2 years for production boards. Component supply remains one of our biggest challenges.
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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- 462.1 hrs. on the Hobbs,
RV10 95% built- Sold 2016
http://www.sdsefi.com/aircraft.html
https://www.youtube.com/channel/UCiy...g2GvQfelECCGoQ


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  #35  
Old 12-03-2022, 03:53 PM
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rv6ejguy rv6ejguy is offline
 
Join Date: Mar 2005
Location: Calgary, Canada
Posts: 6,449
Default Update

Testing continues on the EM-6 board. We're refining the new closed loop and trim code as well as adding some new diagnostic code, figuring it's better to get the latter done before initial release rather than later down the road as originally planned. This may take a bit longer.

We're updating some of our billet part designs to address nonavailability of some other parts from outside suppliers that interface with them and improving some other parts through feedback from field experience. Also working on a new product applicable to RVs and other markets which I think people will find useful.

We'll try to keep system prices stable through 2023 to the best of our ability given the relentless aluminum billet price increases. Most other component costs have been reasonably stable through 2022 at least. Increased buying volume from some of our US vendors has resulted in some slightly better discounts which has been helping offset price increases elsewhere.

System delivery time is back out to around 60 days now. We have a lot of booked orders from the engine building shops stretching into the 3rd quarter of 2023 so these could impact individual order lead times from Feb. through the summer. We'll try our best to continue to hit our target dates on quotes.

Again, thanks to all present and future SDS customers. We very much appreciate being part of your projects.
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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- 462.1 hrs. on the Hobbs,
RV10 95% built- Sold 2016
http://www.sdsefi.com/aircraft.html
https://www.youtube.com/channel/UCiy...g2GvQfelECCGoQ


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  #36  
Old 12-17-2022, 03:56 PM
Jcohen Jcohen is offline
 
Join Date: Aug 2015
Location: Ann Arbor , MI
Posts: 12
Default Does sds use egt to lean mixture?

Sorry for a basic question regarding the SDSEFII system, but here goes:

A Mike Busch article explains why not to use EGT to lean LOP for Lycomings. He suggests a technique of quickly moving to LOP using CHT to avoid lingering in an air/fuel ratio that can cause high cylinder stress at higher power settings.

https://www.aopa.org/news-and-media/...aintenance-egt

Any thoughts on this? Do SDS EFII algorithms use CHT to avoid the “red box zone”? Is this user controllable?

Thanks for clarification.
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RV-7, empennage completed, wings completed, working on fuselage
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  #37  
Old 12-17-2022, 07:01 PM
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Foghorn Foghorn is offline
 
Join Date: Feb 2018
Location: Virginia Beach
Posts: 316
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SDS controls fuel flow and timing. It does have a LOP setting that once set up will quickly change the timing and fuel flow. These are user adjustable. EGT is used by the user to establish that your LOP since it changes with fuel flow so quickly. Once LOP using EGT you can trim (if you have the option installed) the fuel flow for each cylinder to match CHTs if you’d like.

I set up my SDS for LOP at 7500’. This is done while test flying the plane since each installation might be slightly different. My setup uses WOT, push the LOP button then it automatically goes to 29 degrees BTDC and -28% fuel flow. This happens very quickly which avoids lingering in the red box. Then I make minor adjustments using the mixture knob to get it around 30* LOP.

It’s a great system!
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RV8 Fastback (Tom’s Dream) - Phase II (N767TS)
C195 (Red Dawg) - Flying (N4469C)
Retired Army CW4 - Helicopters, KingAirs, B737, MD11
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  #38  
Old 12-17-2022, 09:16 PM
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Mark33 Mark33 is offline
 
Join Date: May 2010
Location: Baton Rouge, La.
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Once you’re under about 60% power, the red box goes away. I basically use RPM’s to go LOP. As an example, I take off and climb out at around 2400-2500 RPM at 700 FPM ROP. During this time my fuel flow (i.e. how much ROP I am) is dictated by CHT’s, which I keep 400*f or less during climb out. Once I’m at cruse altitude I’m typically making less than 60% power at full throttle. Once leveled out I do a quick pull of the prop to 2200 RPM….this is typically the RPM’s I cruse at. Before even touching the mixture my CHT’s go from ROP to peak, to LOP simply by decreasing FF by reducing RPM’s. From this point I only have to make minor adjustments of the mixture to get the FF right where I want it. The main takeaway from all of this is that once you’re below about 60% power, you really can’t hurt anything, even if running right at peak. SDS makes a really nice system and gives you the ability to tweak/adjust your fuel and ignition system perfectly.
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Mark H.
RV-7- IO-360, EFII, Whirl Wind C/S, (Built and sold)
RV-4- O-320, Catto three blade, P-Mags (Sold)
RV-8- IO-360, Hartzell C/S (Flying)
RV-7- Sold project
RV-14- Building

Last edited by Mark33 : 12-18-2022 at 11:18 AM.
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  #39  
Old 12-17-2022, 10:12 PM
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rv6ejguy rv6ejguy is offline
 
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Location: Calgary, Canada
Posts: 6,449
Default

As Jeff said, SDS can avoid the manual leaning part to go LOP. Press the LOP button on the programmer and you're done once it's set up right. It can simultaneously advance timing a few degrees to minimize the power loss with the slower burning lean mixture.

Easy Peasy.
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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- 462.1 hrs. on the Hobbs,
RV10 95% built- Sold 2016
http://www.sdsefi.com/aircraft.html
https://www.youtube.com/channel/UCiy...g2GvQfelECCGoQ


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  #40  
Old 12-18-2022, 10:38 AM
Jcohen Jcohen is offline
 
Join Date: Aug 2015
Location: Ann Arbor , MI
Posts: 12
Default

Thanks everyone for your quick replies. I will study up more on the SDS system as I am expecting my Aerosport IO360 that I purchased with the SDS EFII to be built in March. I have much to learn about how it operates!
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