---------------------------------------------------------- Europa-List Digest Archive --- Total Messages Posted Sun 08/23/09: 6 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 08:52 AM - Fuel pumps (Fred Klein) 2. 09:24 AM - Re: Fuel pumps (Frans Veldman) 3. 11:17 AM - Re: Fuel pumps (Fred Klein) 4. 01:41 PM - Re: Fuel pumps (Frans Veldman) 5. 01:41 PM - Engine theft!! (Choperpaul) 6. 02:19 PM - Re: Engine theft!! (Tim Houlihan) ________________________________ Message 1 _____________________________________ Time: 08:52:11 AM PST US From: Fred Klein Subject: Europa-List: Fuel pumps Hi Guys... After biting the bullet and ordering a RAM Performance Sube EA81 derivative engine, I must now deal w/ aux. fuel pump selection...I've been planning on installing two for redundancy downstream from a single gascolator. Acft Spruce lists a number of different models of Facet fuel pumps. http://www.aircraftspruce.com/catalog/eppages/facetpumps.php There's a notation at the bottom of the page stating that "the above" fuel pumps "do not feature an anti-siphoning valve and fuel will flow through them in event of pump failure". That would seem to indicate that if using two of them, they should be installed in series rather than parallel in order to avoid loss of fuel pressure by having the operative pump pumping fuel back thru the failed pump instead of to the engine. (I'm presuming that an anti-siphoning valve functions as a back flow preventer.) I'd welcome comment on my reasoning and any suggestions on alternate brands of pumps. Fred ________________________________ Message 2 _____________________________________ Time: 09:24:55 AM PST US From: Frans Veldman Subject: Re: Europa-List: Fuel pumps Fred Klein wrote: > There's a notation at the bottom of the page stating that "the above" > fuel pumps "do not feature an anti-siphoning valve and fuel will flow > through them in event of pump failure". That would seem to indicate that > if using two of them, they should be installed in series rather than > parallel in order to avoid loss of fuel pressure by having the operative > pump pumping fuel back thru the failed pump instead of to the engine. I would install them in the same way as recommended with the Europa engine. That is, in series with two external one-way valves. The one-way valves act as a bypass for the non-functioning fuel pump. Why, you might ask, the fuel pumps flow through anyway? Well, if a fuel pump is broken, you can't count on anything. Maybe just the motor gave up the ghost, but it is also possible that a vane broke off and is now blocking the stream, or the axle broke and the entire pump section scattered in pieces, or something downstream of the filter got loose and plugged the pump, or whatever. The fuel pump might let the fuel through, but it might also not. If all this could never happen, you didn't need a secondary fuel pump anyway. Just make sure that if you take one fuel pump completely out of the equation, you can still get fuel to the engine. Frans ________________________________ Message 3 _____________________________________ Time: 11:17:12 AM PST US From: Fred Klein Subject: Re: Europa-List: Fuel pumps > I would install them in the same way as recommended with the Europa > engine. That is, in series with two external one-way valves. The one- > way > valves act as a bypass for the non-functioning fuel pump. Thanks Frans...sage advice as I've come to expect from you. I'll be doing further research w/ regard to desired pressures, etc. BTW, how are you coming?...still looking for first flight this fall? Fred ________________________________ Message 4 _____________________________________ Time: 01:41:44 PM PST US From: Frans Veldman Subject: Re: Europa-List: Fuel pumps Fred Klein wrote: > Thanks Frans...sage advice as I've come to expect from you. I'll be > doing further research w/ regard to desired pressures, etc. > > BTW, how are you coming?...still looking for first flight this fall? Yep. Well, no, make it winter. ;-) Next month the airplane will go to a professional painter. Interior is already finished. I just have to go through a long list with various small issues, but we are slowly getting there. Your wing root fairings are installed. Took me some headaches to do it in such a way that the airplane can still be easily transported, that a conversion to glider wings remains possible, and that the result is not only airworthy but also pretty and functional. I think I succeeded in that. ;-) Will try to find some time to post some pictures. Frans ________________________________ Message 5 _____________________________________ Time: 01:41:44 PM PST US Subject: Europa-List: Engine theft!! From: "Choperpaul" Hi all, 3 X 912S engine were stolen from 2 X Fox Bats and a Sting aircraft on the evening of 22 Saturday. The engines were removed with care but the aircraft were left sitting on their tails in the dirt with engine cowls placed to one side. Should anyone be offered an aircraft engine or propeller, PLEASE make sure of its origin, as this sort of theft will directly effect us all in the future, and of course, If you happen to find out who is selling them, we would LOVE to know!! Visit - www.EuropaOwners.org ________________________________ Message 6 _____________________________________ Time: 02:19:33 PM PST US From: Tim Houlihan Subject: Re: Europa-List: Engine theft!! Hi Where did this theft occur?, I ask this because a 912S was stolen some weeks ago from an aircraft at a strip in Worcestershire UK. Tim Choperpaul wrote: > > Hi all, > > 3 X 912S engine were stolen from 2 X Fox Bats and a Sting aircraft on the evening of 22 Saturday. > > The engines were removed with care but the aircraft were left sitting on their tails in the dirt with engine cowls placed to one side. > > Should anyone be offered an aircraft engine or propeller, PLEASE make sure of its origin, as this sort of theft will directly effect us all in the future, and of course, If you happen to find out who is selling them, we would LOVE to know!! > > > Visit - www.EuropaOwners.org > > > > ------------------------------------------------------------------------ > > > Checked by AVG - www.avg.com > > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message europa-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Europa-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/europa-list Browse Digests http://www.matronics.com/digest/europa-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.