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  #41  
Old 06-29-2019, 11:18 AM
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Mark33 Mark33 is offline
 
Join Date: May 2010
Location: Baton Rouge, La.
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Quote:
Originally Posted by NinerBikes View Post
Will also be interesting to see what the hourly fuel consumption is with this new Fi rig. Wondering what type of fuel pump and fuel pressures are needed with these fuel injectors?
Iím sure Ross will chime in, but Iíll bet worst case scenario fuel burn will be the same as the carbureted version...but more than likely better. Iím sure the duel Walbro fuel pumps will be used along with the Borla fuel pressure regulator which will maintain 45-50 psi on the fuel rail. More than likely itíll basically be the same setup as whatís offered for the EFI Lycoming installation.
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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- (Building)
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  #42  
Old 06-29-2019, 12:16 PM
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rv6ejguy rv6ejguy is offline
 
Join Date: Mar 2005
Location: Calgary, Canada
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Quote:
Originally Posted by NinerBikes View Post
Will also be interesting to see what the hourly fuel consumption is with this new Fi rig. Wondering what type of fuel pump and fuel pressures are needed with these fuel injectors?
While we haven't tested this new setup yet, our earlier Rotax EFI systems have shown a 4-18% reduction in fuel burn. The wide range there is dependent on leaning strategies, altitude and whether you have EFI only or EFI plus our EI. Many Rotax systems we supplied in the past still retained the factory fixed ignition timing which is a compromise just as on a Lycoming.

With the newer EM-5s, we also have the capability to individually trim fuel to each cylinder in flight for zero GAMI spread. This should eke out 1-2 more percent in savings.

We use a smaller version of the electric Walbro pumps we supply on Lycoming systems. Can use twin pumps if desired. Fuel pressure is generally set around 40 psi.

Price wise, I haven't received all the machining bills yet but we are hoping to keep the new kit price in line with the older kits using the fabricated intake manifold which chewed up a lot of hours making, fitting and welding.

You can see some of the other parts and older systems here: http://www.sdsefi.com/rotax.htm
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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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  #43  
Old 06-29-2019, 03:26 PM
NinerBikes NinerBikes is offline
 
Join Date: Dec 2018
Location: Granada Hills
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More than enough pressure to prevent any vapor lock with winter grade MoGas with 10% ethanol in late spring or summer heat at higher elevation airports, when motor is hot, after a burger run?
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  #44  
Old 06-29-2019, 03:51 PM
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Mark33 Mark33 is offline
 
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Location: Baton Rouge, La.
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Originally Posted by NinerBikes View Post
More than enough pressure to prevent any vapor lock with winter grade MoGas with 10% ethanol in late spring or summer heat at higher elevation airports, when motor is hot, after a burger run?
Yep. Thatís one of the beauties of electronic fuel injection.
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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- (Building)
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  #45  
Old 08-26-2019, 04:57 PM
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rv6ejguy rv6ejguy is offline
 
Join Date: Mar 2005
Location: Calgary, Canada
Posts: 5,376
Default Final Parts

I finally received the last of the prototype parts today for our Rotax EFI system. These were throttle linkage parts to rid folks of the hated OEM Y cables.

The new linkage will use a proper single ACS aircraft throttle cable.

Once the TBs are synched, they will stay that way forever.

Testing on the engine will begin as soon as I can mesh schedules with owner of the test aircraft, possibly next week.

Excited to see how everything works and get this in production if everything goes well.
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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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  #46  
Old 08-28-2019, 07:49 PM
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rv6ejguy rv6ejguy is offline
 
Join Date: Mar 2005
Location: Calgary, Canada
Posts: 5,376
Default Short Vid

I uploaded this short video tonight showing our twin throttle body setup and linkage: https://youtu.be/bwkBrh4Ho58
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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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  #47  
Old 08-28-2019, 08:00 PM
E. D. Eliot E. D. Eliot is offline
 
Join Date: Dec 2005
Location: San Pedro
Posts: 954
Default Great

I hope that this new TB set up works out well for you. I'm potentially a customer in a year or two.
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  #48  
Old 08-28-2019, 08:43 PM
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rv6ejguy rv6ejguy is offline
 
Join Date: Mar 2005
Location: Calgary, Canada
Posts: 5,376
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Me too. We already have a couple tweaks we want to do on production parts to make installation easier.

The setup will go off to one of our partners in the US next week for fitment and running on the test stand.

Testing and feedback may result in some more changes before we go to production.
__________________

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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