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fuel pressure

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europa(at)pstewart.f2s.co
Guest

Posted: Thu Jun 25, 2009 2:17 am Post subject: fuel pressure

Has anyone used a double banjo bolt on the (914) fuel regulator to provide a

take of for measuring fuel pressure ?



I am currently measuring fuel pressure in the fuel line to the regulator - don't

know if this would be different. The rotax owners site suggests the double banjo

idea.



Any thoughts gratefully received

Regards



Paul Stewart

G-GIDY

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h&jeuropa

Joined: 07 Nov 2006
Posts: 650

Posted: Thu Jun 25, 2009 3:02 am Post subject: Re: fuel pressure

Paul,



That's exactly how ours is setup.  Works fine.



Jim & Heather

N241BW

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frans(at)paardnatuurlijk.
Guest

Posted: Thu Jun 25, 2009 3:03 am Post subject: fuel pressure

europa(at)pstewart.f2s.com wrote:

 	  Quote: 	
		   

 

 Has anyone used a double banjo bolt on the (914) fuel regulator to provide a

 take of for measuring fuel pressure ?


	


I have. It is a standard part if you buy the Europa supplied

differential fuel pressure indicator. One side goes to the double banjo,

and the other side to the airbox. You measure the pressure difference

over the airbox and fuel, and this is what you want to measure, because

this is what the carbs are seeing. If you buy the Europa differential

fuel pressure indicator, you will get all required parts.



-- 

Frans Veldman

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europa(at)pstewart.f2s.co
Guest

Posted: Thu Jun 25, 2009 8:43 am Post subject: fuel pressure

Jim , Franz



Thanks for the replies.



Jim what I'm trying to find out is if there is a difference between the pressure

in the fuel line between fuel pump and regulator (where I'm currently measuring

it) and pressure in the line from regulator to carb (where the banjo would

measure it).  I wasn't quite sure how you were saying yours is set up.



Franz - I'll get onto Europa re the banjo - I already have the sensor feeding

into a Blue Mountain EFIS



Regards



Paul

G-GIDY



Quoting "h&amp;jeuropa" <butcher43(at)att.net>:



 	  Quote: 	
		   



 Paul,



 That's exactly how ours is setup.  Works fine.



 Jim & Heather

 N241BW





 Read this topic online here:



 http://forums.matronics.com/viewtopic.php?p 49930#249930

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frans(at)paardnatuurlijk.
Guest

Posted: Thu Jun 25, 2009 12:09 pm Post subject: fuel pressure

europa(at)pstewart.f2s.com wrote:

 	  Quote: 	
		   Franz - I'll get onto Europa re the banjo - I already have the sensor feeding

 into a Blue Mountain EFIS


	


If you have a 914, just make sure you use the difference over the airbox

pressure, not the absolute fuel pressure. The absolute fuel pressure is

meaningless if the airbox pressure is the same (netto is zero, so no

fuel will flow to the carbs, despite the absolute fuel pressure).



-- 

Frans Veldman

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budyerly(at)msn.com
Guest

Posted: Thu Jun 25, 2009 1:24 pm Post subject: fuel pressure

<?xml:namespace prefix="v" /><?xml:namespace prefix="o" /><![endif]-->  Do it all the time with the 914s.  Lockwood recommends it and your  Rotax parts manual has a breakdown.  I have a love hate relationship with  fuel pressure sensors so I won't recommend any for fear of  retaliation.  

  

 Bud Yerly

 Custom Flight

 [quote]   ---

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budyerly(at)msn.com
Guest

Posted: Thu Jun 25, 2009 1:31 pm Post subject: fuel pressure

<?xml:namespace prefix="v" /><?xml:namespace prefix="o" /><![endif]-->  Not to differ Frans,  but to comment.

  

 The differential is absolutely necessary, but I do the math to check MP vs  Fuel Pressure, it keeps me alert.  I don’t fly above 10,000 so it rarely  matters in my type flying.  I measure the pressure off the regulator to  watch my fuel filter health.  A drop in fuel pressure indicates a fuel  filter in need of servicing.  Learned that the hard way in test  flying.  

  

 It would be the department of redundant redundancy to measure both  differential and MP and fuel manifold pressures, but wouldn't it be neat.

  

 Just my thoughts.

  

 Bud Yerly

 Custom Flight

 [quote]   ---

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