---------------------------------------------------------- Europa-List Digest Archive --- Total Messages Posted Sun 12/09/07: 5 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 12:18 AM - Re: Off topic speeding ticket (Richard Lamprey) 2. 01:10 AM - Re: Secondary Fuel Pump, correct or not (josok) 3. 03:50 PM - Re: Secondary Fuel Pump, correct or not (josok) 4. 06:41 PM - Re: Secondary Fuel Pump, correct or not () 5. 07:15 PM - Re: Aileron Trim servo (Rick Stockton) ________________________________ Message 1 _____________________________________ Time: 12:18:39 AM PST US From: "Richard Lamprey" Subject: Re: Europa-List: Off topic speeding ticket Here in Kenya, they would have stopped the next five motorists and asked them for 'very special something small' (known in north african circles as bakshish), as Christmas is coming, and let them on their way ________________________________ Message 2 _____________________________________ Time: 01:10:01 AM PST US Subject: Re: Europa-List: Secondary Fuel Pump, correct or not From: "josok" Craigh, The Rotax and factories fuel circuit diagrams call for he pumps to be in series, with non-return valves parellel to the pumps. In that diagram a blocked fuel pump will be bypassed by a valve. I can not think of any single component failure that would prevent fuel to be passed to the engine. Regards, Jos Okhuijsen Visit - www.EuropaOwners.org ________________________________ Message 3 _____________________________________ Time: 03:50:20 PM PST US Subject: Re: Europa-List: Secondary Fuel Pump, correct or not From: "josok" Hi Ron, How do you calculate that? Valve one open? Pump 2 will supply. Valve one closed? Pump one will supply. Valve 2 open? Pump one supply, Valve 2 blocked, pump 2 will supply. The same logic counts for the pumps as well. Please explain where the scenario goes wrong. It does not matter if the pump is mechanically or electrically driven. Regards, Jos Okhuijsen Visit - www.EuropaOwners.org ________________________________ Message 4 _____________________________________ Time: 06:41:47 PM PST US Subject: Re: Europa-List: Secondary Fuel Pump, correct or not From: Hi Jos "How do you calculate that?" (failure because of failed Andair 1 way valve) I will first mention that my 1988 R100GS BMW motorcycle with type 64 Bing Carbs has a vacuum controlled valve that turns off fuel to carbs when there is no vacuum. Let bike sit with MoGas with Stabil (fuel stablizer) (with carbs run dry) and that valve glues itself closed! Valve is not too unlike the Andair 1 way valves used by Europa on 914. A very light pressure to open when working correctly, but 100PSI will not open if glued shut. Carb cleaner and air can unstick, but almost unbelievable how it can get so stuck. I have not heard of Andair 1 ways sticking opened or closed, but my dart throw is sticking closed with MoGas use and sitting plane is good possible failure. OK here are some failures Europa 914 series with bypass and 2 filters (or 2 gasculators)**: **Glue both valves shut, pump #1 on will have a hard time getting through #2 pump that is off or failed (if both pumps on and they are working will run OK) **Glue both valves shut, if #1 pump fails or is off or #1 filter or gasculator clogged, #2 pump will not provide **#2 pump fails or is off and #1 valve stuck opened no fuel flow from pump #1 will be supplied **#1 pump fails or is off and #2 valve opened no flow from pump #2 will be supplied After fooling with system: http://contrails.free.fr/engine_914_fuel_syst_test_en.php Good idea to use P1 as primary pump, and good idea to be able to turn off P1 and run just P2 to test system. If wired so P1 always running you could not really test #1 valve or #2 filter or Gasculator. I am using 2 Andair gasculators instead of supplied filters: http://www.europaowners.org/modules.php?set_albumName=Begin-06-2003&op=modload&name=gallery&file=index&include=view_album.php See: Album: 914 modular fuel system. Series with bypass, two Andair 375s. Another very real failure is having an air leak in Gasculator or Filter! On my system if I pushed up on one of the beautiful Stainless Steel Andair bowl drains, just the tiniest bit, either pump #1, or #2 or both #1+#2 would far rather suck air than fuel and foam right away! Thats right, does not matter Gasculator #1 valve or Gasculator #2 valve, a small leak will kill fuel flow! Although nice drain, it still relies on an O-Ring to seal. Worth a very close look before flight no fuel is leaking from those Gasculator drains, and very careful monitor you have differential pressure on both pumps, checking 1 pump at a time at high MP. As one of my tests was to see and touch and feel for my self how the pumps will perform with a suction head. I noticed that if you create a very small air leak at either of the Gasculators, it is far more devistating the greater the suction head. In other words full fuel and nose not too high will be nowhere near as hard as low fuel level and high nose. Ron P. ________________________________ Message 5 _____________________________________ Time: 07:15:24 PM PST US From: Rick Stockton Subject: Re: Europa-List: Aileron Trim servo I remember seeing this trim setup for another airplane and decided to do the same for the Europa. I think it was on an RV-6 or 9. I tried looking through my URL that I have saved, but could not find it. I don't think it would be to hard to set it up. I'm working on the cockpit module now and will be installing the aileron push rod in the next couple of weeks. That was one of the mods I will be making. I did not like like the trim out on the aileron and covered it back up. I'll sent you some of the pictures as I start to work on it. craig bastin wrote: Can someone point me in the right direction to an article i saw (here i think) where someone had made a composite "horse shoe" spring an attached it to the aileron push rod under the cockpit module along with a small servo thanks craig ------------------------------------------------------------------------------------- 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.