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10-31-2016, 06:36 AM
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Join Date: Feb 2015
Location: Locust Grove, GA
Posts: 621
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SDS vs. Titan EXP FI
We are about to purchase an RV-7A project that has a Titan O-360 installed. It currently does not have a carb on the engine.
The heads appear to have plugged injector ports which I assume are standard on most engines (showing my novice ignorance here). It does have dual P-mags already installed.
We would prefer to have fuel injection and the Titan experimental FI system caught my eye. I am planning to install the SDS ignition and FI on the RV-10 that we are also building. Getting some experience with SDS on the -7A would be beneficial. I can always sell the P-mags as they are basically new.
I have read many of the posts about the SDS system and it appears to be very solid with plenty of benefits. I have not seen any reports on the Titan system.
We know we do not want a carburetor, so I'm looking for advice and opinions on either the SDS or Titan EXP FI.
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Krea Ellis
Locust Grove, GA
DA20-A1 "Princess Amelia" - gone home to Amelia Island
RV-7A Phase 2
RV-10 under construction at Synergy Air South
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10-31-2016, 06:59 AM
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Join Date: Jul 2009
Location: Mojave
Posts: 4,652
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I'd guess the best place to start is the feature list of each offering. Ross has brought some very useful aviation specific features to market recently and to me they are a clear product discriminator.
Individual cylinder trim, integrated fuel flow (no flow meter), barometric altitude compensation, a user definable LOP switch for spark AND fuel, and direct mount injectors all come to mind.
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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.
Michael Robinson
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Harmon Rocket II -SDS EFI
RV-8 - SDS CPI
1940 Taylorcraft BL-65
1984 L39C
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10-31-2016, 07:35 AM
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Join Date: Feb 2015
Location: Locust Grove, GA
Posts: 621
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No question the SDS and the EFII systems are the gold standards for EFI/EI today. I'm also trying to determine if there are less expensive or possibly less "risky" options more along the lines of traditional aircraft mechanical FI systems.
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Krea Ellis
Locust Grove, GA
DA20-A1 "Princess Amelia" - gone home to Amelia Island
RV-7A Phase 2
RV-10 under construction at Synergy Air South
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10-31-2016, 07:59 AM
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Join Date: Oct 2005
Location: 08A
Posts: 9,500
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The Titan mechanical injection system is much like Continental constant flow injection, and not at all like the Bendix-pattern constant flow usually seen on Lycoming/Lyclone engines. It's not real common; offhand I only know one guy flying it who posts here.
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Dan Horton
RV-8 SS
Barrett IO-390
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10-31-2016, 08:13 AM
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Join Date: Oct 2011
Location: Pilot Hill, CA
Posts: 845
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Here's a Titan EXP FI brochure for those who haven't seen it.
http://eci.aero/pdf/FISbrochure.pdf
The SDS offerings are great. I only have a standard electrical system, one battery, one alternator, one buss, that's holding me back.
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Charlie
RV-8
Last edited by Chkaharyer99 : 10-31-2016 at 08:33 AM.
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10-31-2016, 09:03 AM
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Join Date: Mar 2005
Location: Calgary, Canada
Posts: 5,766
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I believe Sky Dynamics is also now offering their own mechanical FI. No idea on pricing or how many are flying though. Lots of choices out there.
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10-31-2016, 09:59 AM
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Join Date: Feb 2015
Location: Locust Grove, GA
Posts: 621
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Too many choices...
Quote:
Originally Posted by rv6ejguy
I believe Sky Dynamics is also now offering their own mechanical FI. No idea on pricing or how many are flying though. Lots of choices out there.
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All with their pluses and minuses.
Mr. Farnham, I am looking for an excuse to buy your system for the 7A and the 10. Help me out here 
__________________
Krea Ellis
Locust Grove, GA
DA20-A1 "Princess Amelia" - gone home to Amelia Island
RV-7A Phase 2
RV-10 under construction at Synergy Air South
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10-31-2016, 09:59 AM
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Join Date: Apr 2008
Location: Catawba, NC
Posts: 193
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P-mags
I will need 2 p-mags before spring, let me know if you decide to swap them out.
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mangling aluminum since May 2009
RV7-A, flying
RV8 under construction
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10-31-2016, 10:30 AM
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Join Date: Mar 2005
Location: Calgary, Canada
Posts: 5,766
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Quote:
Originally Posted by KatanaPilot
All with their pluses and minuses.
Mr. Farnham, I am looking for an excuse to buy your system for the 7A and the 10. Help me out here 
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We don't like to do the hard sell thing, just tell the truth on what the system can do which the mechanical systems can't. If you've followed the various threads here on VAF, you probably know the advantages. Main disadvantages would be wiring complexity, the need for backup power and the need for fuel return lines to the tanks I would say.
2 Pmags and an AFP setup is around $5K which is right around where our kits start for a single ECU with fuel trim and fuel flow options, bit more with the dual ECU, associated dual sensors, wiring and switchgear.
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10-31-2016, 10:55 AM
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Join Date: Feb 2015
Location: Locust Grove, GA
Posts: 621
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Sure will!
Quote:
Originally Posted by engineerorange
I will need 2 p-mags before spring, let me know if you decide to swap them out.
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If we move forward, the airplane should be in Atlanta by then so I'll keep you in mind.
And the Titan EXP system is no longer being produced. One less choice, so that's probably good.
Thanks for the pricing info on the SDS. That helps, too.
__________________
Krea Ellis
Locust Grove, GA
DA20-A1 "Princess Amelia" - gone home to Amelia Island
RV-7A Phase 2
RV-10 under construction at Synergy Air South
Last edited by KatanaPilot : 10-31-2016 at 11:02 AM.
Reason: Added text
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