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Rotax 582 Fuel Burn

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f.miles.tcp.833(at)clearw
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Posted: Sat Sep 08, 2007 3:45 pm Post subject: Rotax 582 Fuel Burn

Can anyone tell me what the typical hourly burn should be? I understand that this will vary with altitude, rpm and so on but just give me an average.  

   

Frank Miles  

K-III w/ Rotax 582  

     

  3:18 PM

     [quote][b]

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dave

Joined: 22 Sep 2006
Posts: 1382

Posted: Sat Sep 08, 2007 4:21 pm Post subject: Re: Rotax 582 Fuel Burn

582   - 18 to 21 litres per hour at  about 6000  rpm is what i get 

5600 rpm you might see 16 to 17 litres per hour



this is with stock Bing 54 carbs and stock needles with needle clips on 3rd notch from the top which I use this time of year. 



In winter i will drop the clip one notch which raises the needle and will increase your fuel burn by 10 - 15%  to 20 to 23.5 litres/ hour.



My EGts run in summer 1100 or so and in winter 1150 to 1200 and plugs loks great.  

I pitch prop for 6800 wide open straight and level and depending on prop the static could be 5900 (warp) , 6200 (gsc)  to  6500  ( ivo )  plis a few inflight props i have will more adjustment. 



Hope this helps ,

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Mnflyer

Joined: 15 May 2006
Posts: 78

Posted: Sat Sep 08, 2007 5:47 pm Post subject: Re: Rotax 582 Fuel Burn

To convert Daves figures to GPH divide by 3.8.

18 litres = 4.74 gallons

21 litres = 5.53 gallons

GB

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GB
MNFlyer
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f.miles.tcp.833(at)clearw
Guest

Posted: Sat Sep 08, 2007 6:07 pm Post subject: Rotax 582 Fuel Burn

Dave,



I nope that means somewhere between 4.5 and 5 gallons per hour??



Frank



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Guy Buchanan

Joined: 16 Jul 2006
Posts: 1204
Location: Ramona, CA

Posted: Sun Sep 09, 2007 6:29 am Post subject: Rotax 582 Fuel Burn

At 04:44 PM 9/8/2007, you wrote:

  	  Quote: 	
		  Can anyone tell me what the typical hourly burn should be? I understand that this will vary with altitude, rpm and so on but just give me an average. 	


 On long trips, leaned to about 1150F EGT, I get about 4.5 gph fuel plus about 0.7 pph oil. Kicking around the pattern day to day my fuel burn stays the same, but my oil consumption goes down to about 0.5 pph. (The oil injection pump uses less oil at idle.)



 

 Guy Buchanan

 San Diego, CA

 K-IV 1200 / 582-C / Warp / 100% done, thanks mostly to Bob Ducar.     [quote][b]

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dave

Joined: 22 Sep 2006
Posts: 1382

Posted: Sun Sep 09, 2007 7:11 am Post subject: Re: Rotax 582 Fuel Burn

Guy, 



I find the opposite in oil consumption. 

I get about 60 - 65 to 1  in cruise and will be closer to 50-to  1  do in circuits.  

The  oil pump is metered by throttle position so when wide open i am burning about 7.5 gals/ hours .  

I find that my NAVMAN fuel flow is pretty accurate for fuel consumption and for example Last weekend I  was on a x country to a few flyins on floats and I used about 100 litres in total  and about 1.5  litres in oil  that would be about on what i get normally.  I have logged 103 hours in My Kitfox alone since May 07 since i changed plugs last.



Back on wheels now and having a blast,  put on VG's yesterday on the wings,  looking like a positive improvement so far but will have to do a bit more testing  to confirm what i found in 1 hours last night.  I was reluctant to put them on as My Kitfox flies so well.  Will report as i get a few more hours in it.

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