---------------------------------------------------------- Europa-List Digest Archive --- Total Messages Posted Thu 08/15/19: 8 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 03:02 AM - Re: Mod 60 fuel sender - linearised? (Ivor) 2. 03:47 AM - Re: Re: of interest (Gaham Singleton) 3. 05:31 AM - Re: Re: of interest (Bud Yerly) 4. 05:45 AM - Socket size of wheel nut (William Daniell) 5. 06:45 AM - Re: Socket size of wheel nut (Ivor) 6. 10:55 AM - Re: of interest (n7188u) 7. 02:29 PM - Re: of interest (n7188u) 8. 03:02 PM - Re: Re: Socket size of wheel nut (William Daniell) ________________________________ Message 1 _____________________________________ Time: 03:02:31 AM PST US Subject: Europa-List: Re: Mod 60 fuel sender - linearised? From: "Ivor" Hi Graham Wema is the fuel sender unit in my aircraft, the web link is https://wema.co.uk/collections/caravans-mobile-homes/products/fuel-sender?variant=29346567239 It gives you the information you require about what gauge to use, My sender goes into the main side of the fuel tank (port) and reads in 8 increments but the later ones do 12, Ivor Read this topic online here: http://forums.matronics.com/viewtopic.php?p=490879#490879 ________________________________ Message 2 _____________________________________ Time: 03:47:04 AM PST US From: Gaham Singleton Subject: Re: Europa-List: Re: of interest Chris Somewhere accurate co-ordinates are on the web. It's 25 years since I had much to do with it and several computer failures too. Kingsley Hurst might have them? You could ask Andy Draper but he left Europa many years ago. Put the message out on the Club forum, someone should know but it's all from at least 15 years ago. Seems like 6 months to me but time leaves me behind these days! Graham > On 13 Aug 2019, at 17:06, n7188u wrote: > > > Good points Graham and will probably do the items you mention. > > I am planning to paint only stabs, ailerons and maybe flaps white so I can balance before first flight and not worry afterwards if I paint the whole plane. The rest will be primer and thin coat of sealer. This was a Lancair builder center did with their planes (Evolutions) we had here at our field. > > I used to fly a longEZ with VGs and it flew nice but I kept breaking them when I handled the plane or cleaned it so my current one has none (and a GU canard!). But my EZ flies great, very docile and the canard stalls at 58 knts so no complains. yes, it will pitch down in rain (or not take off in rain and heavy) but I don't fly in rain often. > > Regarding the wing LE, how can you ensure it has the correct profile? Are there coordinates for this airfoil? Even with the coordinates it sounds that it would be challenging to ensure the entire span is accurate or do you check at some discrete span points and then ensure the thing is fairly smooth in between? > > Regards, > Chris. > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=490843#490843 > > > > > > > > > ________________________________ Message 3 _____________________________________ Time: 05:31:53 AM PST US From: Bud Yerly Subject: RE: Europa-List: Re: of interest Pete, No noticeable difference other than you can look out and see the dirt flowi ng with the water making a nice visual display of the laminar to turbulent transition layer. The plane does slow down but in heavier rain, comes heav ier turbulence so I normally slow down as we get vertical development in ou r rain showers. The problem with the XS is it is excessively heavy because it is extremely easy to add more stuff. Best Regards, Bud Yerly Sent from Mail for Window s 10 ________________________________ From: owner-europa-list-server@matronics.com on behalf of Pete Sent: Wednesday, August 14, 2019 9:44:17 PM Subject: Re: Europa-List: Re: of interest Great write-up Bud...... how does the XS do in heavier rain? On Aug 14, 2019, at 8:32 PM, Bud Yerly > wrote: Chris, Getting the leading edge profiled correctly was a bit of a problem in the C lassic foam wing. It comes down to a good long block and a root and tip te mplate and of course a good eye. Technique on rolling the leading edge by rolling off the edge at a 45 gives a uniform leading edge. The XS is out o f the mold pretty good. Though I=92ve seen wings built on saw horses that were a bit wonky, but trimmed out OK. Good flat tables are the best wing s kin gluing jig. Attached is my LSA vortex generator testing I did for the Europa LSA. Spea ks for itself. I like these Aussie VGs. Great results after moving them a round the plane was acceptable as an LSA or for STOL ops. Weight, CG, and wing smoothness are all essential for efficient cruising, b ut so is cooling drag. Pay attention to sealing your cooling duct gaps. S ee my Cooling discussions on my website. It is nice to get the benefit of an increase in speed and cool better. Most of the drag on a light airplane is cooling drag so make sure you follow the rule. Think like an air molec ule that is pretending to be a naughty teenager looking to get out of work. If there is a gap to escape work, they will rush to go through it, result ing in low productivity, and drag. See www.customflightcreations.com for some of the other building and flying articles. Since the Europa wing is very well designed and up to 1450 pounds, has a re asonable laminar flow and nearly perfect elliptic wing lift distribution, s o aerodynamic gimmicks like wing fences, winglets, and VGs. I have not fou nd it necessary to fly with the wings in the raw or just primed and sealed. The stall of the Europa is slightly less abrupt than a typical series 6 a irfoil due to excellent leading edge contour. The best stall taming is wit h the POH recommended stall strips as it adds great pre-stall warning feel prior to the actual break. You will find modifying the wing shape to impro ve flow will be an exercise yielding nothing. I=92ve done tuft tests, and the wing tends to have a nice span wise root to tip stall progression provi ding the wings are built the same and square of course. The stall of an un modified wing begins separation at the root, the downwash over the stab dec reases, the nose drops and the root begins to fly, then the nose rises and it repeats. (See stall on youtube: Europa 159HR Flight.) The POH stall str ip allows a complete aft stick stall in most aircraft with the stick full b ack and a gentle nose down rumble and shake. Don=92t let the nose wader as it will rumble off opposite to the ball. Flaps down depends on the flap r igging. The rumble begins only just prior to the stall and the nose drops like any other large flapped conventional tractor aircraft. Adding VGs mad e for an aircraft with excellent control but it sank like a rock at 40 KTS with no low speed warning. Like Buzz Lightyear, I was, =93Falling With St yle=94. Many pilots have never flown a light aircraft with the center of mass so ne ar the CG, so a little rudder, P factor, or a droopy flap really affects th e yaw/roll in the Europa. Case in point, the nose is really pulled to the left just at the stall break even at idle power! This results in a left wi ng drop as one would expect. The stall strips give excellent feel approach ing a clean stall power on or off. Watch out for that old, I think I can make it better, which I found added w eight, build time, and tweaking. Keep it light, maintenance accessible, an d smooth, and you will be rewarded. Get the family into the build, but don=92t be Captain Bligh, let them have fun and help (well for an hour or two when you need an extra set of hands). Remember, =93Ain=92t nobody happy unless Momma is happy=94! Best Regards, Bud Yerly Custom Flight Creations, Inc. Sent from Mail for Window s 10 ________________________________ From: owner-europa-list-server@matronics.com > on behalf of n7188u > Sent: Tuesday, August 13, 2019 12:06:26 PM t@matronics.com> Subject: Europa-List: Re: of interest rb@gmail.com>> Good points Graham and will probably do the items you mention. I am planning to paint only stabs, ailerons and maybe flaps white so I can balance before first flight and not worry afterwards if I paint the whole p lane. The rest will be primer and thin coat of sealer. This was a Lancair b uilder center did with their planes (Evolutions) we had here at our field. I used to fly a longEZ with VGs and it flew nice but I kept breaking them w hen I handled the plane or cleaned it so my current one has none (and a GU canard!). But my EZ flies great, very docile and the canard stalls at 58 kn ts so no complains. yes, it will pitch down in rain (or not take off in rai n and heavy) but I don't fly in rain often. Regarding the wing LE, how can you ensure it has the correct profile? Are t here coordinates for this airfoil? Even with the coordinates it sounds that it would be challenging to ensure the entire span is accurate or do you ch eck at some discrete span points and then ensure the thing is fairly smooth in between? Regards, Chris. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=490843#490843 st Email Forum - pa-List">http://www.matronics.com/Navigator?Europa-List p; - MATRONICS WEB FORUMS - ums.matronics.com p; - NEW MATRONICS LIST WIKI - matronics.com p; - List Contribution Web Site - p; -Matt Dralle, List Admin. http://www.matronics.com/contribution ________________________________ Message 4 _____________________________________ Time: 05:45:10 AM PST US From: William Daniell Subject: Europa-List: Socket size of wheel nut Im being lazy. Does anyone know the size the main gear wheel nut? (In recent maintenance involving several people mine disappeared, i suspect it took a trip, as thing often do in that situation) Many thanks will William Daniell +1 786 878 0246 ________________________________ Message 5 _____________________________________ Time: 06:45:05 AM PST US Subject: Europa-List: Re: Socket size of wheel nut From: "Ivor" Yes its 1 5/16 inch same size as an old Austin mini flywheel bolt Read this topic online here: http://forums.matronics.com/viewtopic.php?p=490884#490884 ________________________________ Message 6 _____________________________________ Time: 10:55:39 AM PST US Subject: Europa-List: Re: of interest From: "n7188u" Thanks for the detailed write up Bud. And thanks graham for the info on the coordinates. Bud, I have a feeling that once I start flying I will be too lazy to start playing with changing anything in the plane. It always happens. I still intend to fly on primer just because I won't have the money initially to have a nice paint job done (although I am very good at painting myself and have good equipment). I am not sure I want to go through the exercise of making a spray booth at home again. I will see what happens when I get to that point. Profiling the wing is not something I am crazy about. Just got a little carried away by the inspiring videos for the AR5 and AR6. Neat stuff. I hate sanding in general and per your info it seems the airfoil is not that sensitive to variation (or it's molded pretty good as you mention). A nice true stall will be a must for me although I had my share of nasty stalling airplanes in my life. I do want to work on the cooling part (I have your paper plus a bunch of good info from others in the forum). I thought about toying with the root fairing after I get the plane flying. The existing fairing does look a bit simplistic but it begs to ask whether the Europa really benefits from interference drag reduction. No, I don't want to work more than needed to get the plane in the air but it would be neat to have small projects to work on after it's done. With my current work and family situation I am not really using the airplanes for traveling so being down a little here and there doesn't hurt me (and the fact I have another cruising plane at my disposal). But I will fly the heck out of it for the first year without doing anything to it for sure :) Best, Chris Read this topic online here: http://forums.matronics.com/viewtopic.php?p=490887#490887 ________________________________ Message 7 _____________________________________ Time: 02:29:23 PM PST US Subject: Europa-List: Re: of interest From: "n7188u" Bud, You can tell I am bored :) I read the papers you posted and find the information fascinating. I always wondered if my Europa could be registered as an LSA (not that I need to do that now but I am not getting any younger). it seems from your write up that it should be possible to do. I still need to read the whole in detail (at work now). Can a plane that has been already registered as an experimental be changed over to LSA? You mention in your paper that you can go for LSA at the beginning but what if you tell the airplane you are substantially modifying the airplane and want to obtain a new Airworthiness Certificate? Chris Read this topic online here: http://forums.matronics.com/viewtopic.php?p=490892#490892 ________________________________ Message 8 _____________________________________ Time: 03:02:18 PM PST US From: William Daniell Subject: Re: Europa-List: Re: Socket size of wheel nut SGFoYWhhLi4uLmkgd2FzIG5vdCBhd2FyZSBvZiB0aGF0Lg0KVGhhbmtzIGl2b3INCg0KV2lsbGlh bSBEYW5pZWxsDQorMSA3ODYgODc4IDAyNDYNCg0KT24gVGh1LCBBdWcgMTUsIDIwMTksIDA4OjQ3 IEl2b3IgPGctaXZlckBsaXZlLmNvLnVrPiB3cm90ZToNCg0KPiAtLT4gRXVyb3BhLUxpc3QgbWVz c2FnZSBwb3N0ZWQgYnk6ICJJdm9yIiA8Zy1pdmVyQGxpdmUuY28udWs+DQo+DQo+IFllcyBpdOKA mXMgMSA1LzE2IGluY2ggc2FtZSBzaXplIGFzIGFuIG9sZCBBdXN0aW4gbWluaSBmbHl3aGVlbCBi b2x0DQo+DQo+DQo+DQo+DQo+IFJlYWQgdGhpcyB0b3BpYyBvbmxpbmUgaGVyZToNCj4NCj4gaHR0 cDovL2ZvcnVtcy5tYXRyb25pY3MuY29tL3ZpZXd0b3BpYy5waHA/cD00OTA4ODQjNDkwODg0DQo+ DQo+DQo+DQo+DQo+DQo+DQo+IF8tPT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09DQo+IF8tPSAgICAgICAgICAtIFRoZSBFdXJvcGEtTGlz dCBFbWFpbCBGb3J1bSAtDQo+IF8tPSBVc2UgdGhlIE1hdHJvbmljcyBMaXN0IEZlYXR1cmVzIE5h dmlnYXRvciB0byBicm93c2UNCj4gXy09IHRoZSBtYW55IExpc3QgdXRpbGl0aWVzIHN1Y2ggYXMg TGlzdCBVbi9TdWJzY3JpcHRpb24sDQo+IF8tPSBBcmNoaXZlIFNlYXJjaCAmIERvd25sb2FkLCA3 LURheSBCcm93c2UsIENoYXQsIEZBUSwNCj4gXy09IFBob3Rvc2hhcmUsIGFuZCBtdWNoIG11Y2gg bW9yZToNCj4gXy09DQo+IF8tPSAgIC0tPiBodHRwOi8vd3d3Lm1hdHJvbmljcy5jb20vTmF2aWdh dG9yP0V1cm9wYS1MaXN0DQo+IF8tPQ0KPiBfLT09PT09PT09PT09PT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PQ0KPiBfLT0gICAgICAgICAgICAgICAtIE1B VFJPTklDUyBXRUIgRk9SVU1TIC0NCj4gXy09IFNhbWUgZ3JlYXQgY29udGVudCBhbHNvIGF2YWls YWJsZSB2aWEgdGhlIFdlYiBGb3J1bXMhDQo+IF8tPQ0KPiBfLT0gICAtLT4gaHR0cDovL2ZvcnVt cy5tYXRyb25pY3MuY29tDQo+IF8tPQ0KPiBfLT09PT09PT09PT09PT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PQ0KPiBfLT0gICAgICAgICAgICAgIC0gTkVX IE1BVFJPTklDUyBMSVNUIFdJS0kgLQ0KPiBfLT0gQWRkIHNvbWUgaW5mbyB0byB0aGUgTWF0cm9u aWNzIEVtYWlsIExpc3QgV2lraSENCj4gXy09ICAgLS0+IGh0dHA6Ly93aWtpLm1hdHJvbmljcy5j b20NCj4gXy09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09 PT09PT09PT09PT0NCj4gXy09ICAgICAgICAgICAgIC0gTGlzdCBDb250cmlidXRpb24gV2ViIFNp dGUgLQ0KPiBfLT0gIFRoYW5rIHlvdSBmb3IgeW91ciBnZW5lcm91cyBzdXBwb3J0IQ0KPiBfLT0g ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAtTWF0dCBEcmFsbGUsIExpc3QgQWRtaW4uDQo+ IF8tPSAgIC0tPiBodHRwOi8vd3d3Lm1hdHJvbmljcy5jb20vY29udHJpYnV0aW9uDQo+IF8tPT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09 DQo+DQo+DQo+DQo+DQo ------------------------------------------------------------------------------------- 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.