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Fuel flow test

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DanM

Joined: 16 Nov 2006
Posts: 64
Location: Kingsburg, Calif.

Posted: Tue Mar 25, 2008 10:19 am Post subject: Fuel flow test

I'm going to try and do the initial start of my 2200a engine, Kitfox IV, in about two weeks, I think a fuel flow test is necessary prior to the start. Anybody out there have information  or documents on this procedure?



thanks

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_________________
Dan Mc Intyre
Kitfox IV
Jabiru 2200 SN 1311 , 59.7 hours
Sensenich 62x46
N443DM

Lynn Matteson

Joined: 10 Jan 2006
Posts: 2778
Location: Grass Lake, Michigan

Posted: Tue Mar 25, 2008 11:35 am Post subject: Fuel flow test

I attended a forum given by Jack Dueck at Oshkosh in Summer of '05. I  

think he works for the EAA at Oshkosh. I got a handout describing the  

method. Maybe there's something online through EAA. I'd give them a  

shout/email and see. I also think that Jabiru has a method that they  

use, at least I read that somewhere. I'd give Pete, Andy or Jim a call.



Basically what you're doing is seeing if the fuel system will flow  

150% of what the engine will require in a gravity-flow, high-wing  

plane. The handout that I have talks in terms of weight of the fuel,  

and has a graph that converts horsepower to lbs of fuel per hour.



Lynn Matteson

Grass Lake, Michigan

Kitfox IV Speedster  w/Jabiru 2200

flying w/480+ hrs/down for annual





On Mar 25, 2008, at 2:19 PM, DanM wrote:



 	  Quote: 	
		   

 <danm(at)gangnailtruss.com>



 I'm going to try and do the initial start of my 2200a engine,  

 Kitfox IV, in about two weeks, I think a fuel flow test is  

 necessary prior to the start. Anybody out there have information   

 or documents on this procedure?



 thanks



 --------

 Dan Mc Intyre

 Kitfox Model IV, Jab 2200





 Read this topic online here:



 http://forums.matronics.com/viewtopic.php?p=172578#172578

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_________________
Lynn
Kitfox IV-Jabiru 2200
N369LM

avidaerobat(at)yahoo.ca
Guest

Posted: Tue Mar 25, 2008 1:38 pm Post subject: Fuel flow test

The Fuel flow test is detailed in Tony Bingelis' book Fire Wall Forward (Page 175).  A simplified version is described in EAA Experimenter, 2003 May edition.  It is probably also somewhere in  FAA's Acceptable Methods --- AC43.13.  Part of the documentation for registration includes self certification that you have carried out a fuel flow test.

   

  Ed

  



Lynn Matteson <lynnmatt(at)jps.net> wrote:

  [quote]--> JabiruEngine-List message posted by: Lynn Matteson 

I attended a forum given by Jack Dueck at Oshkosh in Summer of '05. I 

think he works for the EAA at Oshkosh. I got a handout describing the 

method. Maybe there's something online through EAA. I'd give them a 

shout/email and see. I also think that Jabiru has a method that they 

use, at least I read that somewhere. I'd give Pete, Andy or Jim a call.



Basically what you're doing is seeing if the fuel system will flow 

150% of what the engine will require in a gravity-flow, high-wing 

plane. The handout that I have talks in terms of weight of the fuel, 

and has a graph that converts horsepower to lbs of fuel per hour.



Lynn Matteson

Grass Lake, [quote][b]

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avidaerobat(at)yahoo.ca
Guest

Posted: Tue Mar 25, 2008 2:37 pm Post subject: Fuel flow test

Here is the exact wording from the FAA's Amateur-Built Aircraft and Ultralight Flight testing handbook  which you can download at:

   

   

  http://www.faa.gov/library/manuals/aircraft/media/ac90-89a.pdf

   <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />

  e. Fuel Flow and Unusable Fuel Check: This

  is a field test to ensure the aircraft engine will get

  enough fuel to run properly, even if the aircraft is

  in a steep climb or stall attitude.

  (1) First, place the aircraft’s nose at an

  angle 5  degrees above the highest anticipated climb

  angle. The easiest and safest way to do this with

  a conventional gear aircraft is to dig a hole and place

  the aircraft’s tail in it. For a nose gear aircraft, build

  a ramp to raise the nose gear to the proper angle.

  (2) Make sure the aircraft is tied-down and

  chocked. With minimum fuel in the tanks, disconnect

  the fuel line to carburetor. The fuel flow with a gravity

  flow system should be 150 percent of the fuel

  consumption of the engine at full throttle. With a

  fuel system that is pressurized, the fuel flow should

  be at least 125 percent. When the fuel stops flowing,

  the remaining fuel is the ‘‘unusable fuel’’ quantity.

  (3) Since the fuel consumption of most

  modern engines is approximately .55 pounds per

  brake horsepower per hour for a 100 horsepower

  engine, the test fuel flow should be 82.5 pounds (13.7

  gallons) per hour for gravity feed, or 68.75 pounds

  (11.5 gallons) per hour for a pressurized system. The

  pounds per hour divided by 60 equals 1.4 pounds

  and 1.15 pounds per minute fuel rate respectively.

  NOTE: Formula for fuel flow rate gravity

  feed is .55 x engine horsepower x 1.50 =

  pounds of fuel per hour divided by 60 to

  get pounds per minute, divided by 6 to get

  gallons per minute. For a pressurized system,

  substitute 1.25 for 1.50 to determine

  fuel flow rate.

  f. Changing Fuel Flow or Pressure: If the

  aircraft’s fuel flow rate is less than planned, there

  is a volume or pressure problem. An increase in the

  fuel flow volume may necessitate installation of

  larger fuel line fittings on the fuel tanks, fuel selector,

  and carburetor in addition to larger internal diameter

  fuel lines. To increase fuel pressure, install an electrically

  driven or engine driven mechanical fuel

  pump prior to the first flight.

  



Lynn Matteson <lynnmatt(at)jps.net> wrote:

  [quote]--> JabiruEngine-List message posted by: Lynn Matteson 

I attended a forum given by Jack Dueck at Oshkosh in Summer of '05. I 

think he works for the EAA at Oshkosh. I got a handout describing the 

method. Maybe there's something online through EAA. I'd give them a 

shout/email and see. I also think that Jabiru has a method that they 

use, at least I read that somewhere. I'd give Pete, Andy or Jim a call.



Basically what you're doing is seeing if the fuel system will flow 

150% of what the engine will require in a gravity-flow, high-wing 

plane. The handout that I have talks in terms of weight of the fuel,  

and has a graph that converts horsepower to lbs of fuel per hour.



Lynn Matteson

Grass Lake, Michigan

Kitfox IV Speedster w/Jabiru 2200

flying w/480+ hrs/down for annual





On Mar 25, 2008, at 2:19 PM, DanM wrote:



[quote] --> JabiruEngine-List message posted by: "DanM" 

 



 I'm going to try and do the initial start of my 2200a engine, 

 Kitfox IV, in about two weeks, I think a fuel flow test is 

 necessary prior to the start. Anybody out there have information 

 or documents on this procedure?



 thanks



 --------

 Dan Mc Intyre

 Kitfox Model IV, Jab 2200





 Read this topic online here:



 [quote][b]

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ianwilson2

Joined: 06 Jan 2008
Posts: 33
Location: France

Posted: Wed Mar 26, 2008 1:59 am Post subject: Re: Fuel flow test

Dan,



There is a PDF document on how to do this at this website.  http://www.xairireland.com/  go to XAir - Hawk - Downloads and you'll find a fuel flow document for the 2200.



I'm currently building one of these with a 2200a on the front - but I haven't got as far as you yet.



Good luck.



Ian Wilson

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ElleryWeld(at)aol.com
Guest

Posted: Wed Mar 26, 2008 3:47 am Post subject: Fuel flow test

I just finished Building the X-Air H in  February  that's a nice little airplane  I am impressed with it , it went  together quick and it's a rugged Design compared to a lot of planes of  the same construction design and I hope to be building a lot more of them and  The 2200 Jabiru wow  that is a nice piece of Machine work and it is so  smooth running compared to the Rotax  that's my first choice for an engine  on my own plane  now 

  

 Ellery in Maine 

 do not archive

  

  In a message dated 3/26/2008 5:02:58 A.M. Eastern Standard Time,  ianwilson2(at)hotmail.com writes:

  	  Quote: 	
		  -->    JabiruEngine-List message posted by: "ianwilson2"    <ianwilson2(at)hotmail.com>



Dan,



There is a PDF document on    how to do this at this website.  http://www.xairireland.com/  go to    XAir - Hawk - Downloads and you'll find a fuel flow document for the    2200.



I'm currently building one of these with a 2200a on the front -    but I haven't got as far as you yet.



Good luck.



Ian    Wilson





Read this topic online    here:



http://forums.matronics.com/viewtopic.php?p=172726#172726

	




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  [quote][b]

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