---------------------------------------------------------- Europa-List Digest Archive --- Total Messages Posted Mon 08/27/07: 5 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 12:03 AM - Re: Broken Mag wire (Sidsel & Svein Johnsen) 2. 02:13 PM - Re:Rough River Fly In, Broken Mag wire (ALAN YERLY) 3. 04:29 PM - Re: Attending Rough River Fly-in... (Troy Maynor) 4. 04:51 PM - Re: Broken Mag wire (Graham Singleton) 5. 05:45 PM - Re: Broken Mag wire (JEFF ROBERTS) ________________________________ Message 1 _____________________________________ Time: 12:03:47 AM PST US From: "Sidsel & Svein Johnsen" Subject: Re: Europa-List: Broken Mag wire Jeff, I hope the fix you describe will solve the cooling issue. When I did the firewall-forward work, Andy Draper (at that time eith EA2004) recommended that I closed the lower NACA - it should never have been there for the 912/912S installations, he said, only for the 914's turbo. As I recall our conversation, his point was that all this additional air coming in at a place where it does not do any good for 912/912S, competes with the cooling air coming in through the cowl front openings in getting out again. In other words, the more places you let air in, the less air actually comes in through each inlet when the outlet area is not increased. The NACA therefore effectively reduces the air flow through the cowl front, which is the air flow intended to cool the cylinders. Your fix should therefore improve things, I believe. >From what I can read between the lines, you don't have the Rotax glassfibre cooling shroud over the cylinders and its (third) opening in the cowl front? As air in = air out, I trust you have already ensured that you have maximum possible outlet area aft/below, without reducing the air flow through the coolers? Regards, Svein LN-SKJ Jeff wrote: > On my cooling issues it's just a mater of too high of pressure in the > lower cowl not letting the upper air from the top intakes down through. > Until now the lower NACA was just shooting air into the lower cowl with no > direction causing the this high pressure. John Hurst told me some time ago > the demonstrator was set up this way and it was fine. This overheating > never showed until this hot Tennessee heat wave hit. Again I believe I'll > have it solved. I have glassed in the lower NACA to receive a 2 inch scat > tube. This I will run to the upper part of the cowl. I hope it eliminates > the high, lower cowl pressure and increases the top air pressure to force > more air cooling down through the cylinders. I should have it all fixed > in time for next weekend's fly-in at Rough River. ________________________________ Message 2 _____________________________________ Time: 02:13:19 PM PST US From: "ALAN YERLY" Subject: Re:Rough River Fly In, Europa-List: Broken Mag wire Jeff, and Rough River folks, I need a vacation bad, so I am bringing my camping gear and driving up Friday with about 5 gas cans for those who may need fuel and I will bring a tool box and some basic electrical repair parts for those who may need a quick fix on something. Jeff, Glad you caught the lower NACA, as it is a killer for trapping air in the top of the cowl. ----- Original Message ----- From: JEFF ROBERTS To: europa-list@matronics.com Sent: Sunday, August 26, 2007 11:16 PM Subject: Re: Europa-List: Broken Mag wire > Thanks Bud and all else! I have fixed the wire by soldering on a 6 inch or so pig tail of high quality aircraft wire then crimped them to the Mag wires going to the switch. I did away with the rotax connectors and per all your advices tie wrapped them securely so there are no lose wires. All works well. On my cooling issues it's just a mater of too high of pressure in the lower cowl not letting the upper air from the top intakes down through. Until now the lower NACA was just shooting air into the lower cowl with no direction causing the this high pressure. John Hurst told me some time ago the demonstrator was set up this way and it was fine. This overheating never showed until this hot Tennessee heat wave hit. Again I believe I'll have it solved. I have glassed in the lower NACA to receive a 2 inch scat tube. This I will run to the upper part of the cowl. I hope it eliminates the high, lower cowl pressure and increases the top air pressure to force more air cooling down through the cylinders. I should have it all fixed in time for next weekend's fly-in at Rough River. I am looking forward to seeing old friends and some new ones. It's amazing how many people we all have become friends with over this forum and this is a chance to finally put faces to them. If there are any Europa flyers or builders that have not committed to coming this weekend to Rough River KY. I would encourage you to do so. Weather permitting of course. Best Regards, Jeff R. A258 - N128LJ / Gold Rush 90 hours and climbing. On Aug 22, 2007, at 12:41 PM, ALAN YERLY wrote: > Jeff, > If the mag wire was not supported well at the crimp connector, due to > the crimping process and or soldering, and the continuous flexing of > the wire, it will fail due to fatique. If it failed between the > connector and the mag box, that is a new one to me. The ones I see > are from the mag wires installed by the owner going to the mag > connector. Those are cheap and easy connections to replace. The > older engines and new engines have different style connectors so be > sure to get the right one. > > If in fact it is a broken factory installed wire, send out pictures to > your Rotax dealer and request a product deficiency report. They have > pdf files on line and in the owners manual. If you can info everyone > I would appreciate that, as this should be corrected via an AD. > > Bud Yerly > Custom Flight Creations > customflightcreations.com > ----- Original Message ----- >> From: JEFF ROBERTS >> To: europa-list@matronics.com >> Sent: Wednesday, August 22, 2007 11:08 AM >> Subject: Europa-List: Broken Mag wire >> >> Hi Guys, >> I just was about to go flying this morning to test a few changes I've >> made as my bird has not been cooling in this heat well. As I did the >> run-up the right mag didn't drop any RPM's but the right did as it >> should. My temps started climbing again so I went right back to the >> hanger. The engine didn't want to shut down so I had to starve it of >> fuel. I pulled off the cowl right away and as I examined the mag >> connections one of the wires just snapped off only about an inch from >> the mag's side of the connection. The wire was very brittle and I'm >> kind of surprised it's not of better quality. Has this happened to >> anyone else and has anyone been able to fix it without ordering a new >> mag itself? >> Jeff R. >> A258 - N128LJ / Gold Rush 85 hours and still having cooling issues. >> http://www.matronics.com/Navigator?Europa-List ________________________________ Message 3 _____________________________________ Time: 04:29:02 PM PST US From: "Troy Maynor" Subject: Europa-List: Re: Attending Rough River Fly-in... FWIW, Donna and I will not be there until Thursday PM after all, and leaving Sunday. Troy Maynor From: "Paul McAllister" Sent: Wednesday, August 08, 2007 7:18 PM Subject: RE: Europa-List: Re: Attending Rough River Fly-in... > > > > 1. Jeff Behrnes 225 773-9671 cell N55XS Baby Blue Tri-gear > 2. Steve & Bobbi Crimm 678-461-7957 Home N42AH (Tentative) Mono > 3. Jeff Roberts 615-406-8651 Cell N128LJ Gold Rush Tri-Gear > 4. Andrew Sarangan 937-830-1610 arriving in a Zodiac. > 5. Troy & Donna Maynor 828-778-7702 cell. Driving in Wed.PM till Sat > 6. Jim & Heather Butcher, 269-599-0122 cell > 7. Chuck & Marilyn Rhoads 502-410-1357 Geo-Metro powered Tri-gear > 8. Paul McAllister 262 993 4483 cell. N378PJ Mono > 9. Bud Yerly Cell 813 244-8354 Driving in a > 10. Gary Leinberger - flying in with Mooney Friday to Monday - > 717-682-9726 > 11. Julie & Tim Miller - Driving > 12. Ron Parigoris 631-839-3636 cell driving in Friday afternoon > 13. Wayne Gutschow 631-796-6431 cell driving in Friday afternoon > 14. Jim Puglise, Lynne Puglise, cell 941-875-5684 > 15. Scott & Corky Dingman N108EA, Cell 937-416-8080 > 16. John Lawton, flying in each day, N245E > 17. Dave Miller, driving > 18. Ken Carpenter 865 805 3520 cell N 9XS Mono > 19. Michael Grass, 586-822-0333 cell ariving in a C150 > If I have missed anyone please let me know - Paul > > Do Not Archive ________________________________ Message 4 _____________________________________ Time: 04:51:38 PM PST US From: Graham Singleton Subject: Re: Europa-List: Broken Mag wire Jeff The thing to remember above all else is that ALL the cooling air should go throught the radiators or the cylinder fins. Mainly the radiators. (Not much heat comes through the cylinder walls, its all generated in the head and the top of the pistons. So it heats the oil and the coolant.) You should seal all the gaps round the radiators. If you compare the area between the fins with the size of the gaps around the rads, then consider the dragginess of the finning its not surprising too much air leaks past and does no cooling at all. Have a look at the cooling air inlet on this Long EZ, this efficiently cools a 160 hp Lycosaurus and only needs about 8 square inches a side to cool all four cylinders. The key is pressure recovery and good sealing. High pressure to force the air through the fins and nowhere else. The other pik is the first Europa fly in at rough river, October 06! Wonderful weekend, except the Kentucky beer isn't much good, neither is Kentucky wine. Kentucky bourbon is OK but they aren't aloud to sell it to you!}}:-( Graham Sidsel & Svein Johnsen wrote: > > Jeff, > > I hope the fix you describe will solve the cooling issue. > > When I did the firewall-forward work, Andy Draper (at that time eith EA2004) recommended that I closed the lower NACA - it should never have been there for the 912/912S installations, he said, only for the 914's turbo. As I recall our conversation, his point was that all this additional air coming in at a place where it does not do any good for 912/912S, competes with the cooling air coming in through the cowl front openings in getting out again. As air in = air out, I trust you have already ensured that you have maximum possible outlet area aft/below, without reducing the air flow through the coolers? > > Regards, > Svein > LN-SKJ > > Jeff wrote: > >> On my cooling issues it's just a mater of too high of pressure in the lower cowl not letting the upper air from the top intakes down through. Sidsel & Svein Johnsen wrote: > > > Jeff, > > I hope the fix you describe will solve the cooling issue. > > When I did the firewall-forward work, Andy Draper (at that time eith > EA2004) recommended that I closed the lower NACA - it should never have > been there for the 912/912S installations, he said, only for the 914's > turbo. As I recall our conversation, his point was that all this > additional air coming in at a place where it does not do any good for > 912/912S, competes with the cooling air coming in through the cowl front > openings in getting out again. In other words, the more places you let > air in, the less air actually comes in through each inlet when the > outlet area is not increased. The NACA therefore effectively reduces > the air flow through the cowl front, which is the air flow intended to > cool the cylinders. > > Your fix should therefore improve things, I believe. > >> From what I can read between the lines, you don't have the Rotax >> glassfibre > > cooling shroud over the cylinders and its (third) opening in the cowl > front? > > As air in = air out, I trust you have already ensured that you have > maximum possible outlet area aft/below, without reducing the air flow > through the coolers? > > Regards, > Svein > LN-SKJ > > Jeff wrote: > >> On my cooling issues it's just a mater of too high of pressure in the >> lower cowl not letting the upper air from the top intakes down >> through. Until now the lower NACA was just shooting air into the lower >> cowl with no direction causing the this high pressure. John Hurst told >> me some time ago the demonstrator was set up this way and it was fine. >> This overheating never showed until this hot Tennessee heat wave hit. >> Again I believe I'll have it solved. I have glassed in the lower NACA >> to receive a 2 inch scat tube. This I will run to the upper part of >> the cowl. I hope it eliminates the high, lower cowl pressure and >> increases the top air pressure to force more air cooling down through >> the cylinders. I should have it all fixed in time for next weekend's >> fly-in at Rough River. > > > > > > > -- Graham Singleton Tel: +441629820187 Mob: +447739582005 ________________________________ Message 5 _____________________________________ Time: 05:45:04 PM PST US From: JEFF ROBERTS Subject: Re: Europa-List: Broken Mag wire On Aug 27, 2007, at 6:48 PM, Graham Singleton wrote: > > Wonderful weekend, except the Kentucky beer isn't much good, neither is > Kentucky wine. Kentucky bourbon is OK but they aren't aloud to sell it > to you!}}:-( > Gram, You are right, the Kentucky anything cannot compete with the Tennessee whisky. Anytime you want to make the treck over I'll be glad to introduce you to the best drink on the planet... a good ol Lynchburg lemonade. Thanks, Jeff R. A258 - N128LJ / Gold Rush 90 hours and climbing slowly. ------------------------------------------------------------------------------------- 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.