---------------------------------------------------------- Europa-List Digest Archive --- Total Messages Posted Sun 03/28/21: 7 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 01:58 AM - Re: Vents (John Wighton) 2. 06:05 AM - Re: Vents (Patrick Tunney) 3. 10:16 AM - Re: Re: Vents (Bud Yerly) 4. 03:53 PM - Re: Re: 914 Servo Problem -- broken copper wiper -- is there a fix? (GTH) 5. 03:57 PM - Re: Vents (John Wighton) 6. 04:03 PM - Re: Re: 914 Servo Problem -- broken copper wiper -- is there a fix? (GTH) 7. 04:23 PM - Re: Vents (Griffo) ________________________________ Message 1 _____________________________________ Time: 01:58:12 AM PST US Subject: Europa-List: Re: Vents From: "John Wighton" There has been a fair amount of discussion over the location of vents in the Europa, primarily due to interest in the round Ventomatic style of vent. The location shown in this post , close to the waterline (WL) of the wing LE, is probably too low. The shown location differed from that indicated in the build notes that l have found. The protruding exhaust disrupts the airflow at this WL, making it turbulen. Two effects: a) the NACA duct does not work efficiently. b) toxic gases from the exhaust stub can enter the cockpit. My Europa has NACA ducts closer to the fuse split line and work very well. As do many other with the standard duct shape in or around this location. The demisting of my cockpit is achieved with 2 off PC fans of around 60mmdiameter mounted in a carbon fibre plate fixed to the P1 side of the panel inner moulding. This picks up cabin air, slightly heated by the avionics and instruments and blows it onto the screen. I fitted it after leaving the aircraft parked outside for days in autumn, in flight it misted and the side vents were only effective in helping to demise the screen when flying above 100kts. I have no DV panel and had to land with limited viz whilst mopping moisture off the screen. My (then) 11 year old son asking me is this normal?. So, in my opinion other posts are correct, location, location is the key. On the ACCEL electric aircraft the team decided to locate a very small NACA duct just in front of the vast screen and created a duct similar to the one shown linked in this post. The base of the screen at the centreline is a good taping point in the Europa, although it would need some surgery and a displaced cowling break line to make it a fixture. A ductING joint could be fashioned but Scat hose should not be used as it is high loss. -------- John Wighton Europa XS trigear G-IPOD Read this topic online here: http://forums.matronics.com/viewtopic.php?p=501118#501118 ________________________________ Message 2 _____________________________________ Time: 06:05:55 AM PST US Subject: Europa-List: Re: Vents From: "Patrick Tunney" I am just in the process of installing the round style air o vents. could i please get feedback on the best possible location and what worked well before i comit to the hole in the fuselage. Images would really help. Thanks Pat Read this topic online here: http://forums.matronics.com/viewtopic.php?p=501119#501119 ________________________________ Message 3 _____________________________________ Time: 10:16:58 AM PST US From: Bud Yerly Subject: RE: Europa-List: Re: Vents I've had many discussions over the years on cockpit ventilation and I summa rized them in a pdf for you guys to look at. I'm always interested in how to make things work. My own aircraft is tolerable in the Florida heat, but frankly it too can be improved. Best Regards, Bud Yerly -----Original Message----- From: owner-europa-list-server@matronics.com On Behalf Of John Wighton Sent: Sunday, March 28, 2021 4:58 AM Subject: Europa-List: Re: Vents There has been a fair amount of discussion over the location of vents in th e Europa, primarily due to interest in the round Ventomatic style of vent. The location shown in this post , close to the waterline (WL) of the wing L E, is probably too low. The shown location differed from that indicated in the build notes that l have found. The protruding exhaust disrupts the airflow at this WL, making it turbulen. Two effects: a) the NACA duct does not work efficiently. b) toxic gases from the exhaust stub can enter the cockpit. My Europa has NACA ducts closer to the fuse split line and work very well. As do many other with the standard duct shape in or around this location. The demisting of my cockpit is achieved with 2 off PC fans of around 60mmdi ameter mounted in a carbon fibre plate fixed to the P1 side of the panel in ner moulding. This picks up cabin air, slightly heated by the avionics an d instruments and blows it onto the screen. I fitted it after leaving the aircraft parked outside for days in autumn, in flight it misted and the sid e vents were only effective in helping to demise the screen when flying abo ve 100kts. I have no DV panel and had to land with limited viz whilst mopping moisture off the screen. My (then) 11 year old son asking me =9Cis this norm al?=9D. So, in my opinion other posts are correct, location, location is the key. On the ACCEL electric aircraft the team decided to locate a very small NACA duct just in front of the vast screen and created a duct similar to the on e shown linked in this post. The base of the screen at the centreline is a good taping point in the Europa, although it would need some surgery and a displaced cowling break line to make it a fixture. A ductING joint could be fashioned but Scat hose should not be used as it is high loss. -------- John Wighton Europa XS trigear G-IPOD Read this topic online here: https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fforums.ma tronics.com%2Fviewtopic.php%3Fp%3D501118%23501118&data=04%7C01%7C%7C8 b47cdbe5fcc4eac8fdf08d8f1c8273f%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0% 7C637525189239655125%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2 luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=t6rTmyeAwbatssCAIYi %2BtHw8qiKa7ymp162ZombneNE%3D&reserved=0 %2Fwww.matronics.com%2FNavigator%3FEuropa-List&data=04%7C01%7C%7C8b47 cdbe5fcc4eac8fdf08d8f1c8273f%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C6 37525189239655125%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luM zIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=mwo9vug40BO%2F4iTRPB0U OX6IgLqld1oCLVXgS2lLoWI%3D&reserved=0 %2Fforums.matronics.com%2F&data=04%7C01%7C%7C8b47cdbe5fcc4eac8fdf08d8 f1c8273f%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637525189239655125%7C Unknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiL CJXVCI6Mn0%3D%7C1000&sdata=5v%2Ff660AKzuHgyoU%2FuIcYIQVfQog7w17rM%2F4 59fPROo%3D&reserved=0 %2Fwiki.matronics.com%2F&data=04%7C01%7C%7C8b47cdbe5fcc4eac8fdf08d8f1 c8273f%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637525189239655125%7CUn known%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJ XVCI6Mn0%3D%7C1000&sdata=TYZB9HY%2F9Sj6owltJpVKsVtau0ne1zEnhI56KCt1tQ Y%3D&reserved=0 %2Fwww.matronics.com%2Fcontribution&data=04%7C01%7C%7C8b47cdbe5fcc4ea c8fdf08d8f1c8273f%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637525189239 655125%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6 Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=ClMn%2F35teq8jG45%2BXGFwkDtx5DD%2 FxIRojZB6zjGMHaU%3D&reserved=0 ________________________________ Message 4 _____________________________________ Time: 03:53:10 PM PST US Subject: Re: Europa-List: Re: 914 Servo Problem -- broken copper wiper -- is there a fix? From: GTH Le 24/03/2021 02:33, PCahill a crit: > Gilles, > > I think everyone on this list would benefit from knowing about an equivalent motorcycle servo for a lot less cash! I looked myself for such a part... no joy! > Paul and all, Went flying today and could retrieve the servo in the hangar. Fortunately the invoice was still attached to the package, so here goes : Kawazaki Ninja ZX10R Exhaust Valve servo Motor. My buddy found it on eBay in 2016 for $14.99 FWIW, -- Best regards, Gilles http://contrails.free.fr http://lapierre.skunkworks.free.fr ________________________________ Message 5 _____________________________________ Time: 03:57:51 PM PST US Subject: Europa-List: Re: Vents From: "John Wighton" Reply to Pat Tunney I will post a sketch of the preferred zone when l go to the office tomorrow. -------- John Wighton Europa XS trigear G-IPOD Read this topic online here: http://forums.matronics.com/viewtopic.php?p=501123#501123 ________________________________ Message 6 _____________________________________ Time: 04:03:12 PM PST US Subject: Re: Europa-List: Re: 914 Servo Problem -- broken copper wiper -- is there a fix? From: GTH Le 29/03/2021 00:52, GTH a crit: > > Fortunately the invoice was still attached to the package, so here goes : > > Kawazaki Ninja ZX10R Exhaust Valve servo Motor. > -- Best regards, Gilles http://contrails.free.fr http://lapierre.skunkworks.free.fr ________________________________ Message 7 _____________________________________ Time: 04:23:59 PM PST US Subject: Europa-List: Re: Vents From: "Griffo" Very comprehensive article Bud - covered the topic very well. Seems KJ might have his, very nicely finished, NACA vents to low down on the fuselage. -------- 46 Read this topic online here: http://forums.matronics.com/viewtopic.php?p=501125#501125 ------------------------------------------------------------------------------------- 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.