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Rotax 914 Fuel Pumps

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bmoorhouse

Joined: 29 Apr 2009
Posts: 12
Location: SW England - Somerset to be precise

Posted: Thu Apr 08, 2010 7:26 am Post subject: Rotax 914 Fuel Pumps

I have a Europa XS powered by a 914 which has two electric fuel pumps. It is always a niggling concern that if I have an alternator failure and a coincident low battery condition that both pumps would fail with consequent engine stoppage.



This may seem a naive question but is there any approved (UK) alternative using some form of mechanical pump with the 914?

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_________________
_______________
Barry Moorhouse
G-JHYS Trigear XS
Rotax 914 UL

rlborger(at)mac.com
Guest

Posted: Thu Apr 08, 2010 9:54 am Post subject: Rotax 914 Fuel Pumps

Barry,



I'm in the US and working on the installation of a mechanical fuel  

pump on my 914.  You can see pics of the pump and regulator on my site  

on EuropaOwners.org. The pump is capable of much more pressure and  

volume than necessary for the 914 which is the reason for a second  

regulator.  It drops the pressure down to 25 pounds for the Rotax  

regulator to handle.  Once I get all the plumbing issues worked out  

I'llbe posting more information.  If it all works as planned, you  

folks in the UK can begin your own approval processes.



Regards,

Bob Borger



Sent from my iPhone



On Apr 8, 2010, at 11:26, bmoorhouse <barrymoorhouse(at)btinternet.com>  

wrote:



 	  Quote: 	
		   

 >



 I have a Europa XS powered by a 914 which has two electric fuel  

 pumps. It is always a niggling concern that if I have an alternator  

 failure and a coincident low battery condition that both pumps would  

 fail with consequent engine stoppage.



 This may seem a naive question but is there any approved (UK)  

 alternative using some form of mechanical pump with the 914?



 --------

 _______________

 Barry Moorhouse

 G-JHYS Trigear XS

 Rotax 914 UL





 Read this topic online here:



 http://forums.matronics.com/viewtopic.php?p=293498#293498

- The Matronics RotaxEngines-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

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bmoorhouse

Joined: 29 Apr 2009
Posts: 12
Location: SW England - Somerset to be precise

Posted: Fri Apr 09, 2010 2:25 am Post subject: Re: Rotax 914 Fuel Pumps

 	  rlborger(at)mac.com wrote: 	
		  Barry,



I'm in the US and working on the installation of a mechanical fuel  

pump on my 914.  You can see pics of the pump and regulator on my site  

on EuropaOwners.org. The pump is capable of much more pressure and  

volume than necessary for the 914 which is the reason for a second  

regulator.  It drops the pressure down to 25 pounds for the Rotax  

regulator to handle.  Once I get all the plumbing issues worked out  

I'llbe posting more information.  If it all works as planned, you  

folks in the UK can begin your own approval processes.



Regards,

Bob Borger



Sent from my iPhone

	


Thanks for the info Bob. Where does the mechanical pump fit on the 914?

I have heard of some (quite complex) solutions involving backup batteries to drive the existing electrical pumps but, to me, it would appear that this just adds a heck of lot more complexity into the circuitry (further potential failure points) without solving the core issue.



Mind you I have never heard of a single case where an electrical failure actually caused a fuel starvation problem, so maybe this is a solution to a problem that doesn't really exist, except in the most rare circumstances.



I do not have sleepless nights worrying about this as 99% of my flying is in areas where I could carry out a forced landing with a good chance of success (I hope those are not "famous last words"), and there are other potential failures that are far more likely than a total loss of all electrical power.



It was just that if there were some accepted and certificated way of doing this at reasonable cost it would be worth considering.



I look forward to seeing how you get on with your idea.

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_________________
_______________
Barry Moorhouse
G-JHYS Trigear XS
Rotax 914 UL

rlborger(at)mac.com
Guest

Posted: Fri Apr 09, 2010 5:02 am Post subject: Rotax 914 Fuel Pumps

Hello Barry,



The Billet pump bolts onto the same location as the 912 mechanical  

pump, on the starboard side of the gearbox.



Right now, I'm waiting on parts.  I have a spacer gasket on order from  

Lockwood but Rotax is changing the part and old stock is gone and new  

stock has not yet arrived.



I have some additional pics to post explaining things when I return  

home from travel.



I'll let the list know when it's all working.



Best regards,

Bob Borger



Sent from my iPhone



On Apr 9, 2010, at 6:25, bmoorhouse <barrymoorhouse(at)btinternet.com>  

wrote:



 	  Quote: 	
		   

 >

 Thanks for the info Bob. Where does the mechanical pump fit on the  

 914?

 I have heard of some (quite complex) solutions involving backup  

 batteries to drive the existing electrical pumps but, to me, it  

 would appear that this just adds a heck of lot more complexity into  

 the circuitry (further potential failure points) without solving the  

 core issue.



 Mind you I have never actually heard of a single case where an  

 electrical failure actually caused a fuel starvation problem, so  

 maybe this is a solution to a problem that doesn't really exist,  

 except in the most rare circumstances.



 I do not have sleepless nights worrying about this as 99% of my  

 flying is in areas where I could carry out a forced landing with a  

 good chance of success (I hope those are not "famous last words"),  

 and there are other potential failures that are far more likely than  

 a total loss of all electrical power.



 It was just that if there were some accepted and certificated way of  

 doing this at reasonable cost it would be worth considering.



 I look forward to seeing how you get on with your idea.



 --------

 _______________

 Barry Moorhouse

 G-JHYS Trigear XS

 Rotax 914 UL





 Read this topic online here:



 http://forums.matronics.com/viewtopic.php?p=293610#293610

- The Matronics RotaxEngines-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?RotaxEngines-List

pchristensen10(at)austin.
Guest

Posted: Fri Apr 09, 2010 12:34 pm Post subject: Rotax 914 Fuel Pumps

Just bought a 912 fuel pump from leading edge airfoils last week when 

Lockwood was out of stock.  Try them.



Pete

Kitfox III, 912

---

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dan coffey

Joined: 01 May 2010
Posts: 1
Location: greensboro, nc

Posted: Sat May 01, 2010 1:02 pm Post subject: Re: Rotax 914 Fuel Pumps

Berry, 

We have been contacted by ConAir Sports in the UK and have agreed to have him do the test and LAA paper work for the BilletPump on the Rotax 914 installations.

The pump and regulator are due to be shipped on the 10th of May.. If you need any more information you can contact me via email or Skype: n2turbines.



You may also want to contact Martin Olliver "G-JOST" another Europe owner, he stopped by our booth at Sun n' Fun and has seen the pump first hand.



Dan Coffey

www.billetpump.com

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bmoorhouse

Joined: 29 Apr 2009
Posts: 12
Location: SW England - Somerset to be precise

Posted: Wed May 05, 2010 2:45 am Post subject: Re: Rotax 914 Fuel Pumps

 	  dan coffey wrote: 	
		  Berry, 

We have been contacted by ConAir Sports in the UK and have agreed to have him do the test and LAA paper work for the BilletPump on the Rotax 914 installations.

The pump and regulator are due to be shipped on the 10th of May.. If you need any more information you can contact me via email or Skype: n2turbines.



You may also want to contact Martin Olliver "G-JOST" another Europe owner, he stopped by our booth at Sun n' Fun and has seen the pump first hand.



Dan Coffey

www.billetpump.com 	


Thanks for the update Dan

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_________________
_______________
Barry Moorhouse
G-JHYS Trigear XS
Rotax 914 UL

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