---------------------------------------------------------- Europa-List Digest Archive --- Total Messages Posted Tue 05/21/13: 9 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 02:44 AM - Re: Monowheel to trigear conversion - figures (Frans Veldman) 2. 03:23 AM - Re: Monowheel to trigear conversion - figures (europapa) 3. 04:40 AM - Re: Right mag drop and rought running on 914 (Robert Borger) 4. 05:30 AM - FW: Wickenby Wings & Wheels( UK and Europe only) Sorry for any duplications. (Bob Harrison) 5. 08:59 AM - Re: Monowheel to trigear conversion - figures (Bud Yerly) 6. 03:16 PM - Re: Right mag drop and rought running on 914 (Alan Carter) 7. 03:29 PM - Re: Right mag drop and rought running on 914 (Alan Carter) 8. 03:47 PM - Re: Monowheel to trigear conversion - figures (jonathanmilbank) 9. 06:07 PM - Re: Re: Monowheel to trigear conversion - figures (Karl Heindl) ________________________________ Message 1 _____________________________________ Time: 02:44:30 AM PST US From: Frans Veldman Subject: Re: Europa-List: Monowheel to trigear conversion - figures On 05/21/2013 02:30 AM, Robert Borger wrote: > Eventually, the rest of the speed kit (flap hinge fairings) will go on and we'll see how that helps. Don't do the flap hinge fairings. They are very bad. They increase the frontal area many times (pressure drag), increase the side area (skin drag) and worst of all, they have an opening at the rear which is the worst aerodynamic thing you can imagine. The hinges are fine as is, leave them alone, except for the outer one (the double one), but this one can be modified (or you could create a better fairing for it). To give you an idea for a better "outer flap hinge fairing" look at the attached pictures. I made a mold but never installed these fairings as I decided later to modify the flap hinge itself. Frans ________________________________ Message 2 _____________________________________ Time: 03:23:29 AM PST US Subject: Europa-List: Re: Monowheel to trigear conversion - figures From: "europapa" Frans, your objection to the "inner" flap hinge fairings sounds reasonable to me. Thank you for that as I had in mind to apply them this year. So if you dont want to apply your already build fairings maybe you want to sell them to me [Wink] ? Cheers Juergen Read this topic online here: http://forums.matronics.com/viewtopic.php?p=401055#401055 ________________________________ Message 3 _____________________________________ Time: 04:40:51 AM PST US Subject: Re: Europa-List: Right mag drop and rought running on 914 From: Robert Borger Jerry, I'm with you on that thought. I seem to remember from my Rotax 9xx class that the 912 was arranged like that but the 914 was simple A/top & B/Bottom. But the Rotax 914 current Installation manual shows different. I've gone to the 912/914 Heavy Maintenance Manual, Ed. 1/ Rev. 0 date May 01/2007 Section 74-00-00 3.1.0) page 19: It shows the 914 as A/Top B/Bottom, which I believe is correct from what I remember from my school. It looks like the 2008 revision of the Installation Manual may be incorrect. I'll stop by the hanger some time today and dig up my copy of the original installation manual that came with my 914 and see what it says. Blue skies & tailwinds, Bob Borger Europa XS Tri, Rotax 914, Airmaster C/S Prop. Little Toot Sport Biplane, Lycoming Thunderbolt AEIO-320 EXP 3705 Lynchburg Dr. Corinth, TX 76208-5331 Cel: 817-992-1117 rlborger@mac.com On May 20, 2013, at 9:52 PM, Jerry Rehn wrote: Bob I think they are out to confuse us!:) That diagram is for the 912 , don't know why it's in that manual unless there is a footnote Somewhere. I do know that my 914 top module, top plugs, bottom module, bottom plugs. Guess we need a rotax guy to pipe in on this. Maybe can explain whats what! Jerry ________________________________ Message 4 _____________________________________ Time: 05:30:16 AM PST US From: "Bob Harrison" Subject: Europa-List: FW: Wickenby Wings & Wheels( UK and Europe only) Sorry for any duplications. Hi! All , No apologies for the =9CPLUG!=9Das follows:- The Wickenby Wings and Wheels Air show is on 15th and 16th June and promises to be a very good event to attend with possible showings of Vulcan, Red Bull, and BBMF. Throughout the weekend. With it being on Father=99s day weekend what better excuse that a day with =9CBig Boy=99s Toys=9D than Aeroplanes. There will be lots of side stalls and attractions for kids and static aircraft, 4x4 off roading, vintage vehicles and a Fun of the Forties two course Dinner Dance with live music by Swingtime Jazz Band and bar in a Marquee. Aircrew Camping is permitted . Tickets for the event are available on the website www.wickenbyairfield.com/www currently still at the special offer price of =C2=A310 for adults & =C2=A35 for children for a single ticket or =C2=A315 & =C2=A37 for the weekend saver tickets. Also available on line are tickets for the Fun of the Forties Dinner Dance at =C2=A330 for a two course meal, 40s disco & live swing band =9CSwingtime=9D, along with a sunset aerobatic display from the Swip Duo complete with pyrotechnics. If you want to stay over for the whole weekend there are still spaces available on our campsite at the very reasonable price of =C2=A315 for the weekend. You can also get your tickets by contacting Ann Law direct at alaw444@aol.com. ________________________________ Message 5 _____________________________________ Time: 08:59:12 AM PST US From: "Bud Yerly" Subject: Re: Europa-List: Monowheel to trigear conversion - figures Photo E-mail View slideshow | Download images Frans, but mostly for others reading this stuff: I believe that a two part fairing is the answer. I don't have time to finish it as we are swamped, but the forward fairing I use is left nearly as it is now. It bolts to the bracket using two nutplates (my usual way to install the outer bracket). I fabricated a flap fairing from foam that fits into the slot on the forward bracket to get rid of that nasty gap at the back. Cleaner aerodynamically, but what a bugger when it comes to the annual inspection. I now use a screw attach on the forward cover to the wing and to the bracket of course, and just a bit of white caulk to seal the edge. Drill a hole in the bottom of the cover for water of course. My rear fairing will be added to the flap and attached with adhesive sealant. I got stopped when I was trying to keep the gap sealed through full flap travel. Also, for the mono, the flaps will weigh more and I think that my induce a bit of droop which the owner did not have with his current setup. The Europa inner brackets will look awful unless spacers are planed to keep them from distorting. Again, they are not as important as the outer, but the plane looks more complete with them. Pay attention to gear leg covers, transitions and wheel pant height and alignment. A droopy wheel pant is like a parachute. The lower the wheel pant (no lower than the bottom of the wheel rim), the better the speed. For grass strips, well compromises have to be made. Lift the pant up to prevent the rear lip from tear out from the grass whipping it. 12AY went from 107 with a fixed pitch Warp Drive set at 5200 static on the 914. With the Airmaster I jumped to 117 KTS at 1000 MSL (914/Airmaster 332) and now at the same power setting of max continuous (34 inches/5500 RPM) it does right at 136 KTAS. With some tuning and tweaking and only one on board a 920 lb empty weight aircraft and all polished up, I hit 146 KTAS at 1000 MSL in the traffic pattern (I fixed the stock 914 inlet duct cowl seal leak at the rear also which was like a parachute). These cleanups allow a 26 inch/ 5000 RPM cruise at 1000MSL of 127 at about 4.5 GPH. Obviously at 8500 MSL my true airspeed is quite comfortable at 130 ish to get 28 NM/Gal which is over 30 Statue MPG. (Airspeed calibration is less than 2 knots below 100 KIAS and spot on above 100KIAS to 160KIAS.) Our last Europa XS, High Top, at 1400 lbs. as tested, equipped with 912S with Airmaster AP332 does 136 Knots at 1000 MSL at 26 inches and 5500 RPM just using the above techniques. Gear leg covers add speed, pay attention to the details and think like an air molecule. A bit of work with clay and filler and you can get a few more knots, but much more fuel efficiency. Pay attention to your cowl duct seals also. That is more knots than you think also. Finally, the rig of the aircraft makes a big difference. Droopy flaps are the worst. If all is not straight at cruise, (trim tabs also) it slows you down. Regards, Bud Yerly Typical glass up of fairing. Note it is not a thing of beauty at first, but it fits the leg. This photo makes it look like the front has a flat bottom, but that is an optical illusion. These are my flip up pant inner brackets. NOTE: The inner bracket is attached to the metal bracket. Cuts in this are for the gear inner bracket to be able to be removed for a brake job. Pay attention to allow for flex and filler and paint. Use a block sander and square up your final install. Aft portion of this cover has a small amount of gap to allow for gear flex also. It is a great idea to use clear 3M or glider wing tape as an anti chafe for your paint. These joints flex. (This gear is flexed with 400 lbs in the seat and full gas and you can see it just touches. Keep it small and simple. Bigger is not better. Note these are the standard Europa supplied pants, so the cut is right down the center of the fairing. You can make a joggle if you wish, but it is not necessary if your gaps are small and are glass, not filler. This nose gear cover is a bit high so the shimmy dampener is visible for grease leakage. The pant is made with the hinge line set on an angle to allow quick access to the nose wheel for servicing and inspection. ----- Original Message ----- From: Frans Veldman To: europa-list@matronics.com Sent: Tuesday, May 21, 2013 5:43 AM Subject: Re: Europa-List: Monowheel to trigear conversion - figures On 05/21/2013 02:30 AM, Robert Borger wrote: > Eventually, the rest of the speed kit (flap hinge fairings) will go on and we'll see how that helps. Don't do the flap hinge fairings. They are very bad. They increase the frontal area many times (pressure drag), increase the side area (skin drag) and worst of all, they have an opening at the rear which is the worst aerodynamic thing you can imagine. The hinges are fine as is, leave them alone, except for the outer one (the double one), but this one can be modified (or you could create a better fairing for it). To give you an idea for a better "outer flap hinge fairing" look at the attached pictures. I made a mold but never installed these fairings as I decided later to modify the flap hinge itself. Frans These photos will be available on SkyDrive for 30 days. To learn more about SkyDrive, click here. To share high quality pictures with your friends and family using MSN Photo E-mail, join MSN. ________________________________ Message 6 _____________________________________ Time: 03:16:44 PM PST US Subject: Europa-List: Re: Right mag drop and rought running on 914 From: "Alan Carter" Hello Chaps. I don't think Rotax has any bloody standardisation in fact from a logical design point of view I could do better. What I wanted to know was ,when the say "L" mag switch is selected ON, what's components are live and working. So the last time I replaced a coil I colour coded all from the plugs to the mag switch. "R" was green and the top plugs, "L" was red and the bottom plugs. Simple follow the red or the green all the way. So I have trouble down the green route ie to the top plugs, so have been looking in this area. But today I found out I colour coded it the wrong way round, My green route actually goes to the bottom plugs and not the top plugs, so my trouble is not where I thought it was. (see code above) My Proof is:Running on BOTH >smooth Running on "L" smooth. Running on "R" rough, then with one lead off the bottom row, Running very rough. So "R" =Bottom Row of plugs. It really depends on how the builder grounded the Mags on the Mag Switch WHAT IS THE STANDARD WAY ???????? This is my 914. "R" (coded Red route now) > Bottom Module >Bottom Coils >Bottom Plugs(red) "L" (coded Green route now)>Top Module > Top Coils >Top Plugs (green). "BOTH" Top and Bottom together. So ignition "A"= (Top plugs) which is Mag Switch position (L) down the green route. Ignition "B" = (Bottom plugs) which is Mag Switch position (R) down the red route. Simple YES. Alan Read this topic online here: http://forums.matronics.com/viewtopic.php?p=401093#401093 ________________________________ Message 7 _____________________________________ Time: 03:29:47 PM PST US Subject: Europa-List: Re: Right mag drop and rought running on 914 From: "Alan Carter" Hi, Just one more point, look at the mag diagram. 4 coils, all have a (moulding shape) on the rear back side, Three of these (moulding shapes) face upwards, On front lower right coil, this (shape) faces downwards, opposite way round to all the others, so be careful. If I had designed it there would all be facing or pointing is the same direction. I am sure that in the electronics design this could have been achieved, Alan Read this topic online here: http://forums.matronics.com/viewtopic.php?p=401094#401094 ________________________________ Message 8 _____________________________________ Time: 03:47:53 PM PST US Subject: Europa-List: Re: Monowheel to trigear conversion - figures From: "jonathanmilbank" Couple of things. I thought long and hard before converting to tri-gear and prioritised my needs: a) Make the whole landing experience less fraught. b) Keep it as light as possible. c) Retain the smoothness and economy of the 80 hp engine. d) Don't spend a fortune. We have precious few tar runways in the UK which don't charge eye-watering landing fees. So operating on grass in a normally damp climate makes spats less advisable, due to clogging with mud and grass. Our permit system doesn't allow unfettered freedom to design and experiment with such things as fairings and spats, or anything else, except that engineering approval gets obtained through submitting descriptions, drawings, photographs, analyses and the appropriate fee for modification approval. Therefore the usual route to installing a mod is to buy something already approved from a supplier. Because we're presently limited to 1370 lbs mauw, we need to think harder before loading up with goodies. For me, the idea of flying a Europa with an empty weight in the mid 900 range is beyond consideration. It would mean a huge trade-off between fuel and payload. "Roll on 1450 lbs mauw", I say. You guys across the pond enjoy greater freedoms, while being expected to shoulder a much greater load than us for public liability. But thanks for all your insights and suggestions given above. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=401095#401095 ________________________________ Message 9 _____________________________________ Time: 06:07:05 PM PST US From: Karl Heindl Subject: RE: Europa-List: Re: Monowheel to trigear conversion - figures Jonathan=2C The weight shouldn't be a problem=2C of course official sanction of 1450 lb s would be useful. Remember=2C that the Katana=2C which is a much heavier a ircraft=2C has been flying with the 912 for many years without problems. Karl > Subject: Europa-List: Re: Monowheel to trigear conversion - figures > From: jdmilbank@yahoo.co.uk > Date: Tue=2C 21 May 2013 15:47:32 -0700 > To: europa-list@matronics.com > uk> > > Couple of things. I thought long and hard before converting to tri-gear a nd prioritised my needs: a) Make the whole landing experience less fraught. b) Keep it as light as possible. c) Retain the smoothness and economy of t he 80 hp engine. d) Don't spend a fortune. > > We have precious few tar runways in the UK which don't charge eye-waterin g landing fees. So operating on grass in a normally damp climate makes spat s less advisable=2C due to clogging with mud and grass. > > Our permit system doesn't allow unfettered freedom to design and experime nt with such things as fairings and spats=2C or anything else=2C except tha t engineering approval gets obtained through submitting descriptions=2C dra wings=2C photographs=2C analyses and the appropriate fee for modification a pproval. Therefore the usual route to installing a mod is to buy something already approved from a supplier. > > Because we're presently limited to 1370 lbs mauw=2C we need to think hard er before loading up with goodies. For me=2C the idea of flying a Europa wi th an empty weight in the mid 900 range is beyond consideration. It would m ean a huge trade-off between fuel and payload. "Roll on 1450 lbs mauw"=2C I say. > > You guys across the pond enjoy greater freedoms=2C while being expected t o shoulder a much greater load than us for public liability. But thanks for all your insights and suggestions given above. > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=401095#401095 > > > > > > > =========== =========== =========== =========== > > > ------------------------------------------------------------------------------------- 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.