---------------------------------------------------------- RotaxEngines-List Digest Archive --- Total Messages Posted Fri 04/09/10: 3 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 03:26 AM - Re: Rotax 914 Fuel Pumps (bmoorhouse) 2. 06:02 AM - Re: Re: Rotax 914 Fuel Pumps (Robert Borger) 3. 01:34 PM - Re: Re: Rotax 914 Fuel Pumps (Pete Christensen) ________________________________ Message 1 _____________________________________ Time: 03:26:00 AM PST US Subject: RotaxEngines-List: Re: Rotax 914 Fuel Pumps From: "bmoorhouse" 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 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 ________________________________ Message 2 _____________________________________ Time: 06:02:39 AM PST US From: Robert Borger Subject: Re: RotaxEngines-List: Re: 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 wrote: > > > > > 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 > > ________________________________ Message 3 _____________________________________ Time: 01:34:04 PM PST US From: "Pete Christensen" Subject: Re: RotaxEngines-List: Re: 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 ----- Original Message ----- From: "Robert Borger" Sent: Friday, April 09, 2010 8:02 AM Subject: Re: RotaxEngines-List: Re: 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 > wrote: > >> > > >> >> >> 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 >> >> >> >> >> >> >> >> >> >> > > > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rotaxengines-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RotaxEngines-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/rotaxengines-list Browse Digests http://www.matronics.com/digest/rotaxengines-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.