---------------------------------------------------------- Europa-List Digest Archive --- Total Messages Posted Thu 09/10/09: 9 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 12:09 AM - Re: What exactly does the 4 UNI layup do on the wing root do? (Duncan & Ami McFadyean) 2. 12:36 AM - Congrats to Jeff,Cooling feedback for Bud (Remi Guerner) 3. 11:11 AM - Re: Pipe clamps (rampil) 4. 11:36 AM - wing root fairing flight tests (Fred Klein) 5. 02:16 PM - Re: Congrats to Jeff,Cooling feedback for Bud (Duncan & Ami McFadyean) 6. 03:45 PM - Re: Head Count for Rough River Fly in (CHUCK RHOADS) 7. 03:55 PM - Re: Re: Pipe clamps (Paul McAllister) 8. 06:18 PM - Re: Re: Pipe clamps (Fred Klein) 9. 07:20 PM - Re: Re: Pipe clamps (Paul McAllister) ________________________________ Message 1 _____________________________________ Time: 12:09:42 AM PST US From: "Duncan & Ami McFadyean" Subject: Re: Europa-List: What exactly does the 4 UNI layup do on the wing root do? Prevents propagation of rupture of the forward "D-box" at ultimate load. It was explained thus in one of the Factory Newsletters. Duncan Mcf. ----- Original Message ----- From: "rparigoris" Sent: Thursday, September 10, 2009 6:38 AM Subject: Europa-List: What exactly does the 4 UNI layup do on the wing root do? > > > > What exactly does the 4 UNI layup do on the wing root do? > > Perhaps tie the spar to the front and rear lift pins better than if it was > not there? > > Thx. > Ron Parigoris > > > Visit - www.EuropaOwners.org > > > ________________________________ Message 2 _____________________________________ Time: 12:36:09 AM PST US From: "Remi Guerner" Subject: Europa-List: Congrats to Jeff,Cooling feedback for Bud Hi all, I am resending this message to clarify the temperature units: I have been following the cooling discussion with great interest as I have done my own modifications to the cowling over the years with good but not 100% satisfactory results. As for most Rotax equipped Europas, the main issue is overheating on the ground at high ambient temperatures. Worst case is when you land, stop for 5 minutes, start the engine for another flight and have to hold for a long time due to traffic before being cleared for take off, especially if there is no wind or you cannot face into it. An effective validation test for any cooling improvement should be: ambient temperature 30-35 degrees Celsius (90 Fahrenheit, to be adjusted depending on where you fly), no wind. After a short flight, taxi to the parking area, and run the engine at high idle (2000-2200 RPM). Note the CHT every minute. I would consider this test to be 100% satisfactory if I get the CHT STABILIZED not higher than 110 deg C (230 F). Up to now I have not managed to pass this test successfully at ambient temperatures above 23 deg C (67 F). Could those who have done their own cooling modifications try this test and let us know the results? Best regards Remi Guerner F-PGKL, Monowheel, 912S, 696 hours ________________________________ Message 3 _____________________________________ Time: 11:11:29 AM PST US Subject: Europa-List: Re: Pipe clamps From: "rampil" I do not believe the odor of mogas that has always been presenct in my Europa emanates from any of the connections of the hose to connector hardware. Rather some volatile components of the fuel seem to permeate through the hose itself. When I replaced the factory supplied Gates R7 spec hoses this year with Gates R9 hose, the smell of fuel was quite a bit reduced. R9 hose is fuel injection rated hose with a specified lower permeance to fuel (also, longer working life). I used bare hose aft of the tank selector switch, and stainless braided forward of the switch and throughout the engine compartment. Ira -------- Ira N224XS Read this topic online here: http://forums.matronics.com/viewtopic.php?p=262437#262437 ________________________________ Message 4 _____________________________________ Time: 11:36:49 AM PST US From: Fred Klein Subject: Europa-List: wing root fairing flight tests A year ago, I brought a sample of an enhanced wing root fairing to the Rough River Europa Fly In. It was designed to allow for installation during construction or easy retrofit to flying XSs, and is compatible with the necessary clearances for transport on the standard trailer. Information about it and photos can be viewed at: http://www.matronics.com/photoshare/fklein@orcasonline.com.07.21.2008/ Since that time, I=92ve developed a companion molding for the underside, and secondary moldings for the voids which open when flaps are deployed. I=92ve completed the installation on my aircraft which is still under construction. After posting the photos which show a much cleaner fuselage / wing intersection, a number of builders have enquired about and wondered what effect, if any, the fairings have on performance of the Europa. Up until now, I could not answer that question. However, after much discussion, I shipped a set of upper and lower fairings to Jeff Behrnes who is presently flying his XS trigear w/ 912S and Airmaster prop, =93Baby Blue=94. Jeff, through his business, is an expert on exotic tapes and adhesives, and he had proposed that he could temporarily mount the fairings on his aircraft and do a series of flight tests, then remove the fairings and fly the same profiles without the fairings in order to determine whether or not, and to what degree, the fairings affected flight characteristics. Those tests have now been completed. On a preliminary basis only, I can say it appears that the L/D during low power-on glide with the fairings increases by between 11% and 14.3% at varying speeds. Jeff's data shows modest improvements (between 2% and 4%) during economy cruise and climb; there are, however, some anomalies between Jeff's figures and data recorded by Justin Kennedy which we are attempting to sort out. When these issues are resolved, I will post all the data and methodology. In the meantime, if anyone out there with an XS trigear, w/ a 912S, and an Airmaster prop would be willing to fly some simple profiles and record some baseline data, please contact me off list. Cheers, Fred A194 ________________________________ Message 5 _____________________________________ Time: 02:16:50 PM PST US From: "Duncan & Ami McFadyean" Subject: Re: Europa-List: Congrats to Jeff,Cooling feedback for Bud The only comparable data that I have was as follows: 20 minute ground at between 2500 and 4000rpm, CHT stabilised at 94C, OAT 12C. If adjusted for a 30C OAT, then CHT would be 116C. At 2500rpm, oil temp was cooling down through 109C, or 127C adjusted to 30C. There was a moderate wind from behind and <1 hour on the engine, so still tight. Cooling modified thus: Duncan McF. ----- Original Message ----- From: Remi Guerner To: Europa-List Digest Server Sent: Thursday, September 10, 2009 8:31 AM Subject: Europa-List: Congrats to Jeff,Cooling feedback for Bud Hi all, I am resending this message to clarify the temperature units: I have been following the cooling discussion with great interest as I have done my own modifications to the cowling over the years with good but not 100% satisfactory results. As for most Rotax equipped Europas, the main issue is overheating on the ground at high ambient temperatures. Worst case is when you land, stop for 5 minutes, start the engine for another flight and have to hold for a long time due to traffic before being cleared for take off, especially if there is no wind or you cannot face into it. An effective validation test for any cooling improvement should be: ambient temperature 30-35 degrees Celsius (90 Fahrenheit, to be adjusted depending on where you fly), no wind. After a short flight, taxi to the parking area, and run the engine at high idle (2000-2200 RPM). Note the CHT every minute. I would consider this test to be 100% satisfactory if I get the CHT STABILIZED not higher than 110 deg C (230 F). Up to now I have not managed to pass this test successfully at ambient temperatures above 23 deg C (67 F). Could those who have done their own cooling modifications try this test and let us know the results? Best regards Remi Guerner F-PGKL, Monowheel, 912S, 696 hours ________________________________ Message 6 _____________________________________ Time: 03:45:16 PM PST US From: CHUCK RHOADS Subject: Re: Europa-List: Head Count for Rough River Fly in Paul,=0A=0AMy wife and I plan to drive down for the day Saturday.=0A=0AChuc k Rhoads A100-- 150 hours=0A-________________________________________ __________________=0AChuck Rhoads=0Acfrhoads@yahoo.com=0A322 Links Dr.=0ASi mpsonville, KY 40067=0A(502) 410-1357 =0A=0A=0A=0A=0A______________________ __________=0AFrom: Paul McAllister =0ATo: europ a-list@matronics.com=0ASent: Monday, September 7, 2009 8:10:36 PM=0ASubject : Europa-List: Head Count for Rough River Fly in=0A=0A--> Europa-List messa ge posted by: Paul McAllister =0A=0AHi All,=0A =0ACould everyone who is intending to come to Rough River please reply to =0Athis threaad.- From memory I have the following.=0A=0APaul & Jenny McA llister=0ABud Yearly=0ABob Berube=0ABob Borger=0AJim & Heather Butcher=0AJe ff Roberts=0AJeff & Mary Behrnes=0AJohn Lawton=0A=0ABud is looking for a pl ace to bed down, our cabin is full, can any=0Aoffer a spot for him ?=0A=0AT =========================0A =0A=0A ________________________________ Message 7 _____________________________________ Time: 03:55:05 PM PST US Subject: Re: Europa-List: Re: Pipe clamps From: Paul McAllister Hi Ira, I can echo your findings. I replaced all of my rubber hoses with fuel injection hose along with the recommended clamps and I noticed a drop in the fuel smell. The other thing that helped was to replace the rubber elbow at the fuel filler with an aluminum elbow. Regards, Paul ________________________________ Message 8 _____________________________________ Time: 06:18:54 PM PST US From: Fred Klein Subject: Re: Europa-List: Re: Pipe clamps On Sep 10, 2009, at 3:51 PM, Paul McAllister wrote: > I replaced all of my rubber hoses with fuel injection hose along > with the recommended clamps and I noticed a drop in the fuel smell. Paul, When you say, "recommended clamps", are you talking about the small worm-drive SS clamps, or something else? Thanks, Fred PS...regrettably, I will not be joining the gang at RR. ________________________________ Message 9 _____________________________________ Time: 07:20:21 PM PST US Subject: Re: Europa-List: Re: Pipe clamps From: Paul McAllister Hi Fred, No, the clamps came from NAPA and they are specifically for fuel injection hose. With that all said, if I had it all over (don't we say that a lot when we get older) I would do my fuel system in all aluminum, with twin gascolators and a few other things, but that's another story all by its self. 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