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912 EFI kit

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pwmac(at)sisna.com
Guest

Posted: Sun Dec 09, 2007 8:02 am Post subject: 912 EFI kit

Interesting

 From another list

Looking forward to hearing about the success of the kit and all the 

changes required.



http://www.sdsefi.com/aircraft.html

You need to scroll down the page for the announcement.



I have no affiliation with these people

Regards, Paul

Gilles.Thesee(at)ac-greno
Guest

Posted: Sun Dec 09, 2007 9:01 am Post subject: 912 EFI kit

paul wilson a écrit :

 	  Quote: 	
		   http://www.sdsefi.com/aircraft.html

 You need to scroll down the page for the announcement.


	


Paul,

Please note that adding electronic fuel injection to an engine means 

adding dependence on electricity.

 	  Quote: 	
		   The extra current draw of the electric fuel pump, ECU and injectors 

 comes to around 7-9 amps. Operation with the existing internal 20 amp 

 alternator will demand that other normal electrical loads don't exceed 

 8-10 amps

And considering the standard Rotax regulator cannot supply more than 
	


12-14 amps continuous without tending to self destruct, there is not 

much left for the ordinary appliances and battery on board.

The maximum regulator momentary output is in the vicinity of 18 amps.

Regards,

-- 

Gilles Thesee

Grenoble, France

http://contrails.free.fr

pwmac(at)sisna.com
Guest

Posted: Sun Dec 09, 2007 10:03 am Post subject: 912 EFI kit

True Rotax has minimal electrical power. To bad. 

The fix would be a proper alternator, then use 

the Rotax one for backup with just essential 

items on line. There are more than one add-on 

alternator kits available for the 912. I probably will need one anyway.

The EFI does add more complexity with a required 

high pressure pump or two and return line and who knows what else.

It would be nice to modernize the engine.

BTW, I  read about a lot of regulator failures, 

but have not read about the stator generator failures.

Paul

============

At 08:59 AM 12/9/2007, you wrote:

 	  Quote: 	

Thesee <Gilles.Thesee(at)ac-grenoble.fr>

paul wilson a écrit :

>http://www.sdsefi.com/aircraft.html

>You need to scroll down the page for the announcement.

Paul,

Please note that adding electronic fuel 

injection to an engine means adding dependence on electricity.

>The extra current draw of the electric fuel 

>pump, ECU and injectors comes to around 7-9 

>amps. Operation with the existing internal 20 

>amp alternator will demand that other normal 

>electrical loads don't exceed 8-10 amps

And considering the standard Rotax regulator 

cannot supply more than 12-14 amps continuous 

without tending to self destruct, there is not 

much left for the ordinary appliances and battery on board.

The maximum regulator momentary output is in the vicinity of 18 amps.

Regards,

--

Gilles Thesee

Grenoble, France

http://contrails.free.fr

Gilles.Thesee(at)ac-greno
Guest

Posted: Sun Dec 09, 2007 10:39 am Post subject: 912 EFI kit

paul wilson a écrit :

 	  Quote: 	
		  

 It would be nice to modernize the engine.


	


Adding complexity is justified only for correcting some defect.

Not sure whether the 912 really is in need of fuel injection.



 	  Quote: 	
		  

 BTW, I  read about a lot of regulator failures, but have not read 

 about the stator generator failures.


	


The stator itself is very robust.

It took a lot of abuse when we bench tested it :

http://contrails.free.fr/elec_ducati.php



Best regards,

-- 

Gilles

http://contrails.free.fr

alex_01

Joined: 14 Jan 2007
Posts: 33

Posted: Sun Jan 06, 2008 7:22 am Post subject: Re: 912 EFI kit

hi, 



here is a kit ready to go



http://www.silent-hektik.com/UL_912_1.htm

jack.kuehn(at)gmail.com
Guest

Posted: Sun Jan 06, 2008 8:06 am Post subject: 912 EFI kit

This site is in German, which I don't read too well, unfortunately.

What is it, it looks really interesting!



On Jan 6, 2008 8:22 AM, alex_01 <zoechling(at)gmx.de> wrote:

 	  Quote: 	
		   



 hi,



 here is a kit ready to go



 http://www.silent-hektik.com/UL_912_1.htm





 Read this topic online here:



 http://forums.matronics.com/viewtopic.php?p=156312#156312




	


-- 

Jack Kuehn

5565 Brady Ln

Lolo, MT USA 59847



(406)273-6801

(406)546-1086 cell

jack.kuehn(at)gmail.com

(406)273-2563 fax

alex_01

Joined: 14 Jan 2007
Posts: 33

Posted: Mon Jan 07, 2008 10:45 am Post subject: Re: 912 EFI kit

it is about a ready to go EFI system utilize the original manifold 

you can choice with either one or two (as a back up) ecu boxes

what is important the system can run without battery it is self redundant.

better fuel economy in middle range, better egt with only approx 20Â°C differ between cylinders.



nice system but to expensive for the 100 to 200 hrs flyer per year i think



but nice and technical

l_luv2_fly(at)yahoo.com
Guest

Posted: Mon Jan 07, 2008 7:19 pm Post subject: 912 EFI kit

Hi Alex,

  

 Would you happen to know if its still fixed timing or do the ECU's alter the timing to match different RPM's, vacuum and EGT parameters ?

  

 Thanks,  Paul

      [quote][b]

alex_01

Joined: 14 Jan 2007
Posts: 33

Posted: Tue Jan 08, 2008 2:45 pm Post subject: Re: 912 EFI kit

reading in on the website it says it got fuel and ign. maps

i hope this answers your question.

speaking from my experience in my normal day-job for sure the ign and fuel systems used on most airplane engine is a bit stone age but as the flying folks is a bit Conservative if it don't break don't fix it.

but carbs are ok ish as we do most of the running the engine with a constant rpm so the advantages are less but for sure the altitude compensation would bit a lot better with proper maping and therefore mixture compensation.

litesellme(at)yahoo.com
Guest

Posted: Mon Jan 14, 2008 11:03 am Post subject: 912 EFI kit

I have seen may people attempt to do fuel injection, but at www.experimentalfuelinjection.com , we do it right. First off, fuel injection requires 8-9amps no matter who is making the set up. With this in mind, the only way to properly run fuel injection is with a 55 amp external alt. Our set ups are simply the best. We offer 4 different configurations of 912's and 5 different configurations of 914's. From Intercooled direct port fuel injection, to truly redundant set ups on fuel and ignition,  we have it all.  

Regards

Jason 

www.experimentalfuelinjection.com

661 428-1850



alex_01 <zoechling(at)gmx.de> wrote:[quote] --> RotaxEngines-List message posted by: "alex_01" 



it is about a ready to go EFI system utilize the original manifold 

you can choice with either one or two (as a back up) ecu [quote][b]

JOE RONCO

Joined: 04 Aug 2007
Posts: 31
Location: CENTENNIAL COLORADO

Posted: Mon Jan 14, 2008 2:07 pm Post subject: 912 EFI kit

JASON: I am curious as to why you need a 55 Amp alternator for the EFI for the 912 ULS? Another engine manufacturer only uses a 30 Amp.  

   

Joe Ronco  

     

From: owner-rotaxengines-list-server(at)matronics.com [mailto:owner-rotaxengines-list-server(at)matronics.com] On Behalf Of jason Parker

 Sent: Monday, January 14, 2008 12:00 PM

 To: rotaxengines-list(at)matronics.com

 Subject: Re: Re: 912 EFI kit  

  

   

I have seen may people attempt to do fuel injection, but at www.experimentalfuelinjection.com , we do it right. First off, fuel injection requires 8-9amps no matter who is making the set up. With this in mind, the only way to properly run fuel injection is with a 55 amp external alt. Our set ups are simply the best. We offer 4 different configurations of 912's and 5 different configurations of 914's. From Intercooled direct port fuel injection, to truly redundant set ups on fuel and ignition,  we have it all. 

 Regards

 Jason 

 www.experimentalfuelinjection.com

 661 428-1850

 

 alex_01 <zoechling(at)gmx.de> wrote:  

--> RotaxEngines-List message posted by: "alex_01" 

 

 it is about a ready to go EFI system utilize the original manifold 

 you can choice with either one or two (as a back up) ecu    	  Quote: 	
		    http://www.matronics.com/Navigator?RotaxEngines-List 	
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        [quote][b]

litesellme(at)yahoo.com
Guest

Posted: Mon Jan 14, 2008 4:47 pm Post subject: 912 EFI kit

Joe,

I use the same alternator used on the rotax alt kit. It is a 6 pound denso alternator one wire set up. You need 9-10 amps for fuel injection. If you rely on the stock stater /gen assembly, it is only good for 14 continuous. With fuel injection pulling 10 amps, that leaves you 4 for gages, strobes, radio, ect. To answer your question, a 30 amp alt will do just fine. 

Jason



Joe Ronco <joe(at)halzel.com> wrote:[quote]            <![endif]-->       <![endif]-->     JASON: I am curious as to why you need a 55 Amp alternator for the EFI for the 912 ULS? Another engine manufacturer only uses a 30 Amp.

   

  Joe Ronco

   

    From: owner-rotaxengines-list-server(at)matronics.com [mailto:owner-rotaxengines-list-server(at)matronics.com] On Behalf Of jason Parker

 Sent: Monday, January 14, 2008 12:00 PM

 To: rotaxengines-list(at)matronics.com

 Subject: Re: Re: 912 EFI kit

  

   

  I have seen may people attempt to do fuel injection, but at www.experimentalfuelinjection.com , we do it right. First off, fuel injection requires 8-9amps no matter who is making the set up. With this in mind, the only way to properly run fuel injection is with a 55 amp  external alt. Our set ups are simply the best. We offer 4 different configurations of 912's and 5 different configurations of 914's. From Intercooled direct port fuel injection, to truly redundant set ups on fuel and ignition,  we have it all. 

 Regards

 Jason 

 www.experimentalfuelinjection.com

 661 428-1850

 

 alex_01 <zoechling(at)gmx.de> wrote:

  --> RotaxEngines-List message posted by: "alex_01" 

 

 it is about a ready to go EFI system utilize the original manifold 

 you can choice with either one or two (as a back up) ecu 

   	  Quote: 	
		    http://www.matronics.com/Navigator?RotaxEngines-List 	
0 	  Quote: 	
		   	
1 	  Quote: 	
		   	
2 	  Quote: 	
		   	
3 	  Quote: 	
		   	
4 	  Quote: 	
		   	
5[quote][b]

l_luv2_fly(at)yahoo.com
Guest

Posted: Tue Jan 15, 2008 8:01 pm Post subject: 912 EFI kit

Hi Jason,

  

 Could you tell me how many of your engines are in flying aircraft and approximately how many hours (agregated) have been accumulaed ?

  

 Thanks,  Paul

 ---

litesellme(at)yahoo.com
Guest

Posted: Wed Jan 16, 2008 8:32 am Post subject: 912 EFI kit

Paul,

all the engines I use are from the predator  uav program. The military has a whole protocall for pulling engines: overspeed, overtemp,  overboost,  high or low oil pressure, lack of performance, or 600Hours. Most engines I receive are because of lack of performance. The military runs 100ll which fouls up the rings, builds large deposits on the cylinder heads/pistons/ valves. The average time on a engine I receive is around 400 hours. 

regards

Jason



Paul McAllister <l_luv2_fly(at)yahoo.com> wrote:[quote] Hi Jason,

  

 Could you tell me how many of your engines are in flying aircraft and approximately how many hours (agregated) have been accumulaed ?

  

 Thanks,  Paul

 ---

rampil

Joined: 04 May 2007
Posts: 870

Posted: Wed Jan 16, 2008 5:23 pm Post subject: Re: 912 EFI kit

Hi Jason,



I think the question Paul was asking referred to time on engines

AFTER your conversion.  Do you have any customers with flying

aircraft and your injection / turbo system that could share their opinions

or go to SnF or Oshkosh where we could see the hardware, etc.



Thanks,

_________________
Ira N224XS

litesellme(at)yahoo.com
Guest

Posted: Thu Jan 17, 2008 9:35 am Post subject: 912 EFI kit

[quote][b]

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