---------------------------------------------------------- RotaxEngines-List Digest Archive --- Total Messages Posted Mon 11/22/10: 13 ---------------------------------------------------------- Today's Message Index: ---------------------- 0. 12:12 AM - Contributions Down By 17%... (Matt Dralle) 1. 03:28 AM - Re: RotaxEngines-List Digest: Rough running cured with carb heater (MacDonald Doug) 2. 05:54 AM - Noisy Facet fuel pump (Geoff Heap) 3. 05:59 AM - Re: Noisy Facet fuel pump (Roger Lee) 4. 06:21 AM - I can't burp the oil tank on my 912 UL. Could use some help (Geoff Heap) 5. 07:04 AM - Re: Noisy Facet fuel pump (Geoff Heap) 6. 07:45 AM - Re: Rotax 912 throttle return springs (AmphibFlyer) 7. 07:56 AM - Re: Re: RotaxEngines-List Digest: Rough running cured with carb heater (joeing701@simnet.is) 8. 08:40 AM - Re: I can't burp the oil tank on my 912 UL. Could use some help (Robert Borger) 9. 10:58 AM - Re: I can't burp the oil tank on my 912 UL. Could use some help (dashwood) 10. 11:45 AM - Re: I can't burp the oil tank on my 912 UL. Could use some help (Geoff Heap) 11. 01:46 PM - Re: I can't burp the oil tank on my 912 UL. Could use some help (dashwood) 12. 11:35 PM - Re: Re: Noisy Facet fuel pump (joeing701@simnet.is) ________________________________ Message 0 _____________________________________ Time: 12:12:09 AM PST US From: Matt Dralle Subject: RotaxEngines-List: Contributions Down By 17%... Dear Listers, As of today, Contributions to the Matronics List Fund Raiser are lagging behind last year at this time by roughly 17%. I have a Fund Raiser each year simply to cover my operating costs for the Lists. I *do not* accept any advertising income to support the Lists and rely solely on the Contributions of members to keep the expenses paid. I run all of my own servers and they are housed here locally, and the Internet connection is a commercial-grade, T1 connection with public address space. I also maintain a full backup system that does nightly backups of all List-related data so that in the event of a server crash or worse, all of the Lists and the many years of List archive data could be restored onto a new server in a matter of hours. All of this costs a fair amount of money, not to mention a significant amount of my personal time. I have a Fund Raiser each year to cover these costs and I ask that members that feel they receive a benefit from my investments make a modest Contribution each year to support the continued operation and upgrade of these services. If you enjoy the Lists, please make a Contribution today. I also offer some incentive gifts for larger Contribution levels. At the Contribution Web Wite, you can use a credit card, Paypal, or personal check to show your support for the continuation of these services: http://www.matronics.com/contribution Or, drop a personal check in the mail to: Matt Dralle / Matronics 581 Jeannie Way Livermore CA 94550 USA Thank you for your support! Matt Dralle Matronics Email List Administrator ________________________________ Message 1 _____________________________________ Time: 03:28:30 AM PST US From: MacDonald Doug Subject: RotaxEngines-List: Re: RotaxEngines-List Digest: Rough running cured with carb heater Johann, check to make sure that the enrichener arms are seating correctly in the off position. I had a similar issue with my engine. Ine of the gurus from Lockwood pointed out to me that since the enrichener circuit is not a choke, it actually causes a LEAN condition at higher RPMs. Doug MacDonald CH-701 C-GBQX NW Ontario, Canada > Hello list members. > > I have a friend who has been having problems with the Rotax > 912 UL in > a Kitfox 3. When flying today in a temp. around 40F, > the engine ran > rough until he pulled the carb heat on. Ran very smooth and > never as > good. > What do you think could cause this problem? We measured the > carb > levels and they are very similar. 1/8 of an inch. One carb > was > definitely running bad because the EGT dropped on one > exhaust. > No carb ice and the carbs have been rebuild. Any ideas? > > Johann G. > Iceland. > Zenith 701 > Rotax 912UL. ________________________________ Message 2 _____________________________________ Time: 05:54:47 AM PST US Subject: RotaxEngines-List: Noisy Facet fuel pump From: "Geoff Heap" Hi Guys. I'm finishing up my fuel system and had the opportunity to try out my Facet fuel pump. Sounds like a hammering noise. Are they all this noisy or is it just meGeoff -------- Dual controls. Dynon 180. Icom 210 Garmin 296. Becker transponder. Sigtronics intercom. Electric flaperons. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=320503#320503 ________________________________ Message 3 _____________________________________ Time: 05:59:20 AM PST US Subject: RotaxEngines-List: Re: Noisy Facet fuel pump From: "Roger Lee" Did you bleed the system of air? If the pump is pumping air it will be more noisy. It may also make a little more noise with no flow going on. -------- Roger Lee Tucson, Az. Light Sport Repairman - Maintenance Rated Rotax Repair Center Home 520-574-1080 TRY HOME FIRST Cell 520349-7056 Read this topic online here: http://forums.matronics.com/viewtopic.php?p=320504#320504 ________________________________ Message 4 _____________________________________ Time: 06:21:50 AM PST US Subject: RotaxEngines-List: I can't burp the oil tank on my 912 UL. Could use some help From: "Geoff Heap" Hey guys. I'm not flying yet, in fact I have not started the engine yet (912 UL). I've been neglecting it and concentrating on the building. Now I find that I cannot 'burp' the oil tank . The oil level in the tank has been real low but I know that it was high at one time because I'm the one that filled it. I know it just ran down into the crankcase. So I hand propped it again no end of times. No 'burp' and the oil level would not come up. So I broke the connection under the engine and ran all the oil down into a clean plastic coffee can. I got slightly over half a can, about a quart. I re connected the crankcase plug and poured the retrieved oil into the tank. Dip the tank and its at FULL level. I let it sit for 2 days and then Hand propped it over 10 full revolutions. Still nothing. During the 2 days, some of the oil should have leaked into the crankcase. Have I got an airlock somewhere thats preventing the oil from pumping back to the tank? I'd appreciate some adviceGeoff -------- Dual controls. Dynon 180. Icom 210 Garmin 296. Becker transponder. Sigtronics intercom. Electric flaperons. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=320515#320515 ________________________________ Message 5 _____________________________________ Time: 07:04:37 AM PST US Subject: RotaxEngines-List: Re: Noisy Facet fuel pump From: "Geoff Heap" Yes there could be air in the system. This is the first time use and its exhibiting "flow" peculiarities even though it looks like a simple downhill route. My plans are circa 1990's. Small wing tanks hold about 6 gallon each and feed a 5 gallon header tank. The wing tanks are not hooked up yet. I'm probably jumping the gun here. I should wait untill the wing are permanently on. Typically these 3 tank systems have always had problems with flow. It looks like a "no brainer" liquid running downhill but then it goes back uphill to fill the header tank. From THERE it could be a "no brainer" downhill route to the engine. The pump in the photo is not my boost pump . It is my Transfer pump. Its used to start the flow if necessary. I'm going to shelve this for now and pick it up again when the wings are on. playing with it now may be futile. Thanks anyway Roger......Geoff -------- Dual controls. Dynon 180. Icom 210 Garmin 296. Becker transponder. Sigtronics intercom. Electric flaperons. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=320518#320518 Attachments: http://forums.matronics.com//files/reduced_facet_transfer_pp_172.jpg ________________________________ Message 6 _____________________________________ Time: 07:45:24 AM PST US Subject: RotaxEngines-List: Re: Rotax 912 throttle return springs From: "AmphibFlyer" Thom Riddle wrote: > It is standard aviation practice to spring load the throttle arm to wide open. > > Several years ago, one my partners in a Cherokee 140 had the throttle cable break during flight and it went to full throttle which enabled him to get home and landed deadstick after turning off the fuel and then the mags. Cable replaced and we were back to flying. I had exactly the opposite problem once in a SeaRey used for transition training that had been parked outdoors for several years. SeaReys have the throttle springs reversed, so that the spring pulls the throttle closed, not open. The reasoning for this is that the throttle cables (which are pull-only) are much less likely to fail than the springs. When I throttled back on downwind one day, the engine wouldn't go to idle--kept running at about half power. The remedy was easy: switch the engine off and land dead-stick, then re-start to taxi in. The problem was that one spring had broken during the flight. So I got a little bonus training that day. And I was thankful that the cables, not the springs, were set to pull the throttles open. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=320522#320522 ________________________________ Message 7 _____________________________________ Time: 07:56:33 AM PST US From: "joeing701@simnet.is" Subject: Re: RotaxEngines-List: Re: RotaxEngines-List Digest: Rough running cured with carb heater Hello Doug. Thank you for this info. We will make sure that the enrichener is working accordingly. Best regards, Johann G. Iceland. ----- Upprunalegt skeyti ----- Fr: "MacDonald Doug" Til: rotaxengines-list@matronics.com Sent: Mnudagur, 22. nvember, 2010 11:25:24 GMT +00:00 Monrovia Efni: RotaxEngines-List: Re: RotaxEngines-List Digest: Rough running cured with carb heater Johann, check to make sure that the enrichener arms are seating correctly in the off position. I had a similar issue with my engine. Ine of the gurus from Lockwood pointed out to me that since the enrichener circuit is not a choke, it actually causes a LEAN condition at higher RPMs. Doug MacDonald CH-701 C-GBQX NW Ontario, Canada > Hello list members. > > I have a friend who has been having problems with the Rotax > 912 UL in > a Kitfox 3. When flying today in a temp. around 40F, > the engine ran > rough until he pulled the carb heat on. Ran very smooth and > never as > good. > What do you think could cause this problem? We measured the > carb > levels and they are very similar. 1/8 of an inch. One carb > was > definitely running bad because the EGT dropped on one > exhaust. > No carb ice and the carbs have been rebuild. Any ideas? > > Johann G. > Iceland. > Zenith 701 > Rotax 912UL. ________________________________ Message 8 _____________________________________ Time: 08:40:45 AM PST US Subject: Re: RotaxEngines-List: I can't burp the oil tank on my 912 UL. Could use some help From: Robert Borger Geoff, In my Europa installation the oil reservoir has to be mounted slightly higher than the 914's crankcase. Because of this, some oil works its way back into the crankcase over time. The more oil in the crankcase, the more revs needed to blow it out. I generally find that the oil level before burp is down almost 1/2 quart (~1/2 liter) before I do the burp. In my case it may take 15 or 20 revolutions of the prop to blow all the oil from the crankcase and get a satisfying burp. After burp, it is back to close to the full level. Remember, you are using piston blow-by to pressure the crank case and push out the oil. There isn't a whole lot of blow by volume from one compression stroke so it's going to take a fair number of compressions to get sufficient pressure/volume to displace the oil. Don't give up, just keep flipping blades and you'll get your burp. Check six, Bob Borger Europa Kit #A221 N914XL, XS Tri-Gear, Intercooled 914, Airmaster C/S Prop http://www.europaowners.org/forums/gallery2.php?g2_itemId=60232 http://www.biplaneforumgallery.com/index.php?cat=10046 Europa Flying! 3705 Lynchburg Dr. Corinth, TX 76208 Home: 940-497-2123 Cel: 817-992-1117 On Nov 22, 2010, at 8:19, Geoff Heap wrote: > > Hey guys. > I'm not flying yet, in fact I have not started the engine yet (912 UL). I've been neglecting it and concentrating on the building. Now I find that I cannot 'burp' the oil tank . The oil level in the tank has been real low but I know that it was high at one time because I'm the one that filled it. I know it just ran down into the crankcase. So I hand propped it again no end of times. No 'burp' and the oil level would not come up. So I broke the connection under the engine and ran all the oil down into a clean plastic coffee can. I got slightly over half a can, about a quart. I re connected the crankcase plug and poured the retrieved oil into the tank. Dip the tank and its at FULL level. I let it sit for 2 days and then Hand propped it over 10 full revolutions. Still nothing. During the 2 days, some of the oil should have leaked into the crankcase. Have I got an airlock somewhere thats preventing the oil from pumping back to the tank? I'd appreciate some adviceGeoff > > -------- > Dual controls. Dynon 180. Icom 210 Garmin 296. Becker transponder. Sigtronics intercom. Electric flaperons. ________________________________ Message 9 _____________________________________ Time: 10:58:08 AM PST US Subject: RotaxEngines-List: Re: I can't burp the oil tank on my 912 UL. Could use some help From: "dashwood" if you are sure of your hose connections to the tank. just keep flipping the prop. if you just keep spinning it over it will take 20 or more.... i usually turn trough 1 or 2 fins then bring up to compression on the next and hold there for 3 or 4 seconds then next fin to compression hold there for 3 to 5 sec. repeat this and you can burb sooner with less rotations. give time for the air to blead by the rings on a new tight engine -------- Ross Aalexander: CH701 driver 912ul 450tt Read this topic online here: http://forums.matronics.com/viewtopic.php?p=320535#320535 ________________________________ Message 10 ____________________________________ Time: 11:45:53 AM PST US Subject: RotaxEngines-List: Re: I can't burp the oil tank on my 912 UL. Could use some help From: "Geoff Heap" I'm back to admit my sin. I was doing all this with one plug removed from each cylinder. Bob Borger just straightened me out and do I feel dumb. Moving on, if I may. Ross I'll try the hold method that you're talking about. It sounds less strenuous. Even with the plugs out it was killing me.Geoff -------- Dual controls. Dynon 180. Icom 210 Garmin 296. Becker transponder. Sigtronics intercom. Electric flaperons. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=320536#320536 ________________________________ Message 11 ____________________________________ Time: 01:46:58 PM PST US Subject: RotaxEngines-List: Re: I can't burp the oil tank on my 912 UL. Could use some help From: "dashwood" i though i was the only one who could hear the sound of the sea when i pulled my fingers out of my ears...... [Embarassed] [Rolling Eyes] :P [Laughing] [Laughing] [Laughing] [Laughing] [Laughing] -------- Ross Aalexander: CH701 driver 912ul 450tt Read this topic online here: http://forums.matronics.com/viewtopic.php?p=320544#320544 ________________________________ Message 12 ____________________________________ Time: 11:35:49 PM PST US From: "joeing701@simnet.is" Subject: Re: RotaxEngines-List: Re: Noisy Facet fuel pump Hello Geoff. I have this setup in my plane and it works very well. I only have a fuel gauge in the header tank and some clear tubes in the fuel lines coming from the wings to the Andair fuel valve. This way I know when the wing tanks are empty. My fuel transfere pump makes this rattleing sound but does not effect me because the sound of the engine drowns that out when I have to use the transfere pump. The pump has been in the plane for 5 years. I am very happy with this setup. Best regards, Johann G. Iceland. Zenith 701 Rotax 912 UL. ----- Upprunalegt skeyti ----- Fr: "Geoff Heap" Til: rotaxengines-list@matronics.com Sent: Mnudagur, 22. nvember, 2010 15:02:09 GMT +00:00 Monrovia Efni: RotaxEngines-List: Re: Noisy Facet fuel pump Yes there could be air in the system. This is the first time use and its exhibiting "flow" peculiarities even though it looks like a simple downhill route. My plans are circa 1990's. Small wing tanks hold about 6 gallon each and feed a 5 gallon header tank. The wing tanks are not hooked up yet. I'm probably jumping the gun here. I should wait untill the wing are permanently on. Typically these 3 tank systems have always had problems with flow. It looks like a "no brainer" liquid running downhill but then it goes back uphill to fill the header tank. From THERE it could be a "no brainer" downhill route to the engine. The pump in the photo is not my boost pump . It is my Transfer pump. Its used to start the flow if necessary. I'm going to shelve this for now and pick it up again when the wings are on. playing with it now may be futile. Thanks anyway Roger......Geoff -------- Dual controls. Dynon 180. Icom 210 Garmin 296. Becker transponder. Sigtronics intercom. Electric flaperons. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=320518#320518 Attachments: http://forums.matronics.com//files/reduced_facet_transfer_pp_172.jpg ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rotaxengines-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RotaxEngines-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/rotaxengines-list Browse Digests http://www.matronics.com/digest/rotaxengines-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.