---------------------------------------------------------- Europa-List Digest Archive --- Total Messages Posted Tue 11/06/07: 10 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 01:45 AM - Re: Door Latches (flyingphil2) 2. 01:56 AM - Re: fuel system (John Cliff) 3. 03:50 AM - Re: fuel system (Jan de Jong) 4. 04:11 AM - Re: fuel system (Paul Stewart) 5. 06:33 AM - Re: Redux available (ALAN YERLY) 6. 08:16 AM - Re: fuel system (josok) 7. 08:34 AM - Re: fuel system (josok) 8. 08:42 AM - Re: fuel system (Graham Singleton) 9. 09:40 AM - Re: fuel system (josok) 10. 05:51 PM - Re: Redux available (Rick Stockton) ________________________________ Message 1 _____________________________________ Time: 01:45:17 AM PST US Subject: Re: Europa-List: Door Latches From: "flyingphil2" Hi, Thanks for all your replies. I've been correctly informed that the parts I have are pre-mod 67 but all the manuals I have refer to post mod 67. I actually want to do this mod and so I'll need new pushrods. At least I know what the aluminium rods are for now! Phil Visit - www.EuropaOwners.org ________________________________ Message 2 _____________________________________ Time: 01:56:47 AM PST US From: "John Cliff" Subject: Re: Europa-List: fuel system > Hi all, > > I have a question if I may. > Mod 33 shows the starboard drain tank outlet used also as the return line > tank inlet. > The pictures I see with Graham Singleton's adapters for threaded > connections all show the return line going to the vent outlet if I'm not > mistaken. > Is this recommended, if so why? Several years ago I submitted a Modification request to PFA Engineering to cover a revised fuel system with aluminium pipes and home-brewed tank fittings, much like Graham's. The return feed went back via a drain outlet. Francis made several comments. One of them was that this return route was not the best as in the event of a serious engine bay fire in which the flexible hoses were destroyed it would be possible for fuel to be fed from the tank along this return line which could not be turned off. In theory most of the tank contents could feed the fire. Raising the return point to the vent inlet removed this possibility (unless you came to rest on the ground inverted, tail high). John Cliff #0259 ________________________________ Message 3 _____________________________________ Time: 03:50:21 AM PST US From: Jan de Jong Subject: Re: Europa-List: fuel system Thank you John. Hadn't thought of that. Wonder if a check valve could be used? Andair quotes < 0.7 PSI (< 0.05 bar), Rotax requires < 0.25 bar for whole return line. Bad idea? Clogging would give carburettor overflow. Two in parallel? Jan de Jong > >> Hi all, >> >> I have a question if I may. >> Mod 33 shows the starboard drain tank outlet used also as the return >> line tank inlet. >> The pictures I see with Graham Singleton's adapters for threaded >> connections all show the return line going to the vent outlet if I'm >> not mistaken. >> Is this recommended, if so why? > > Several years ago I submitted a Modification request to PFA > Engineering to cover a revised fuel system with aluminium pipes and > home-brewed tank fittings, much like Graham's. The return feed went > back via a drain outlet. > > Francis made several comments. One of them was that this return route > was not the best as in the event of a serious engine bay fire in which > the flexible hoses were destroyed it would be possible for fuel to be > fed from the tank along this return line which could not be turned > off. In theory most of the tank contents could feed the fire. > Raising the return point to the vent inlet removed this possibility > (unless you came to rest on the ground inverted, tail high). ________________________________ Message 4 _____________________________________ Time: 04:11:12 AM PST US From: Paul Stewart Subject: Re: Europa-List: fuel system I also submitted a modification request to the PFA along similar lines to John but with the return into the vent inlet. It has been agreed by the PFA subject to fuel flow tests which I have not yet done (nor pressure). Regards Paul G-GIDY On 6 Nov 2007, at 09:53, John Cliff wrote: > > >> Hi all, >> >> I have a question if I may. >> Mod 33 shows the starboard drain tank outlet used also as the >> return line tank inlet. >> The pictures I see with Graham Singleton's adapters for threaded >> connections all show the return line going to the vent outlet if >> I'm not mistaken. >> Is this recommended, if so why? > > Several years ago I submitted a Modification request to PFA > Engineering to cover a revised fuel system with aluminium pipes and > home-brewed tank fittings, much like Graham's. The return feed > went back via a drain outlet. > > Francis made several comments. One of them was that this return > route was not the best as in the event of a serious engine bay fire > in which the flexible hoses were destroyed it would be possible for > fuel to be fed from the tank along this return line which could not > be turned off. In theory most of the tank contents could feed the > fire. Raising the return point to the vent inlet removed this > possibility (unless you came to rest on the ground inverted, tail > high). > > John Cliff > #0259 > > ________________________________ Message 5 _____________________________________ Time: 06:33:00 AM PST US From: "ALAN YERLY" Subject: Re: Europa-List: Redux available Rick, One kit should do for just wing closeout if the top is on. Send USPS mailing address. It will be shipped Wed. Bud ----- Original Message ----- From: Rick Stockton To: europa-list@matronics.com Sent: Monday, November 05, 2007 8:18 PM Subject: Re: Europa-List: Redux available Bub, I'll be nneding some as I have my wings almost ready to seal. Rick Stockton 707-330-1717 ALAN YERLY > wrote: All Europa Builders, I just had my distributor get a dual shipment of Epibond 420 A/B which is Araldite or as most of us know it, Redux. It is in the 2 pound can. (Yes the can of hardener or part B is a pain to pour from, so use a 1 pint vinegar bottle with a tight fitting cap to make it easier to use and store longer.) Please clean and dry the bottle though. Price is $159.00 plus ground shipping. Shipping is about http://www.matronics.com/contribution http://www.matronics.com/Navigator?Europa-List ________________________________ Message 6 _____________________________________ Time: 08:16:54 AM PST US Subject: Re: Europa-List: fuel system From: "josok" Hi All, Graham's fittings, aluminum pipes, andair fuel cock and andair gascolator before the pumps, fuel flow 130 liters per hour, only one pump running. Measured that with an open return line in a bucket. That information agreed with the fuel flow indication of the plane. Added a push button to switch off the return transducer. Now, during preflight it's easy to check what the raw throughput is. There was no noticeable difference with the return line connected to the top of the tank, using the vent tube. Some pics are at http://www.europaowners.org/kit600 However during the winter stop i will put the return-flow line near the top of the filler snake, because i would like to improve the tank vent for filling. At the moment it's difficult to fill the tank to the brim. Regards, Jos Okhuijsen Visit - www.EuropaOwners.org ________________________________ Message 7 _____________________________________ Time: 08:34:44 AM PST US Subject: Re: Europa-List: fuel system From: "josok" And some other opinion on previous messges in this thread: The andair mesh is 80 micron, not 120. Placing the gascolator after the fuel pumps does not protect the fuel pumps and return valves from debris from the tank. There is some kind of mesh in the pump, and if it caches debris, it will be cluttered pretty soon. The gascolator is designed to do just that. IMHO it is not a good idea to put the pumps before the pumps and return valves. The dry head suction of the pump is more then then the lowest possible level in the tank. As a test i switched from an empty main to an almost empty reserve with only 2 liters, and it took 4 seconds to build fuel pressure back to normal. Before the carbs are filled and the engine is back to normal life however, takes another 2 seconds of missing heart beats. Regards, Jos Okhuijsen Visit - www.EuropaOwners.org ________________________________ Message 8 _____________________________________ Time: 08:42:09 AM PST US From: Graham Singleton Subject: Re: Europa-List: fuel system tank breather needs to be at least 3/8 aluminum (to avoid static build up) and best place is near the top of the snake. Is that where you have it Jos? Graham josok wrote: > > Hi All, > > Graham's fittings, aluminum pipes, andair fuel cock and andair gascolator before the pumps, fuel flow 130 liters per hour, only one pump running. Measured that with an open return line in a bucket. That information agreed with the fuel flow indication of the plane. Added a push button to switch off the return transducer. Now, during preflight it's easy to check what the raw throughput is. There was no noticeable difference with the return line connected to the top of the tank, using the vent tube. Some pics are at http://www.europaowners.org/kit600 However during the winter stop i will put the return-flow line near the top of the filler snake, because i would like to improve the tank vent for filling. At the moment it's difficult to fill the tank to the brim. > > Regards, > > Jos Okhuijsen > > > > > > > Visit - www.EuropaOwners.org > > > > > > > > > -- Graham Singleton Tel: +441629820187 Mob: +447739582005 ________________________________ Message 9 _____________________________________ Time: 09:40:09 AM PST US Subject: Re: Europa-List: fuel system From: "josok" Hi Graham, You made it yourself, and supplied me with the materials remember ? :-) I think it's smaller then 3/8. To resume: In the smaller top opening of the tank i have an adapter with a breather tube and a siphon tube for the long range tank. The breather part goes to the side of the top of the snake. An air vent tube is connected to the top of the snake, with a 5 way manifold that adds the sight tube, the long range tank vent and a return valve to the cockpit air. That return valve should save my butt in case the vent tube opening to the outside world gets blocked by insects or ice. At the moment i have a T splitter in the pipe from the tank to the filler side, and the fuel return is connected there. All works. But i will give the fuel return line it's own top of the fuel snake entry, and do away with the t junction. That hopefully will improve the ease of fueling up. Regards, Jos Okhuijsen Visit - www.EuropaOwners.org ________________________________ Message 10 ____________________________________ Time: 05:51:31 PM PST US From: Rick Stockton Subject: Re: Europa-List: Redux available Sounds like I'll need more. I have not started on the fuseluge. 650 Fountain Way Dixon, CA 95620 ALAN YERLY wrote: Rick, One kit should do for just wing closeout if the top is on. Send USPS mailing address. It will be shipped Wed. Bud ----- Original Message ----- From: Rick Stockton To: europa-list@matronics.com Sent: Monday, November 05, 2007 8:18 PM Subject: Re: Europa-List: Redux available Bub, I'll be nneding some as I have my wings almost ready to seal. Rick Stockton 707-330-1717 ALAN YERLY wrote: All Europa Builders, I just had my distributor get a dual shipment of Epibond 420 A/B which is Araldite or as most of us know it, Redux. It is in the 2 pound can. (Yes the can of hardener or part B is a pain to pour from, so use a 1 pint vinegar bottle with a tight fitting cap to make it easier to use and store longer.) Please clean and dry the bottle though. Price is $159.00 plus ground shipping. 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